Updated on 2025/08/24

写真a

 
MATSUSHITA NOBUHIRO
 
Organization
School of Materials and Chemical Technology Professor
Title
Professor
Contact information
メールアドレス
External link

Degree

  • Doctor of Engineering ( Tokyo Institute of Technology )

Research Interests

  • 機能性セラミックス材料、溶液プロセス

  • Applications of electronic technology

  • 電子技術応用

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electric and electronic materials

Education

  • Waseda University   Faculty of Science and Engineering

    - 1990

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    Country: Japan

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Research History

  • Ministry of Education,Culture,Sports,Science and Technology

    2006.10 - 2008.9

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  • Tokyo Institute of Technology   Associate Professor

    2005.3 - 2006.10

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  • University of Minnesota   Visiting Scholar(Overseas Research Fellow Sponsored by Ministry of Education)

    1999.4 - 2000.3

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  • Tokyo Institute of Technology   Assistant Professor

    1992.10 - 2004.2

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  • Tokyo Institute of Technology   Technical Assistant

    1990.4 - 1992.9

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Professional Memberships

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Committee Memberships

  • The Institute of Electrical Engineers of Japan (IEEJ)   Assistant Secretary of Magnetic Technical Committee  

    2003   

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    Committee type:Academic society

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  • 表面技術協会   アカデミー実行委員  

    2003   

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    Committee type:Academic society

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  • 電気学会   マグネティックス技術委員会 幹事補佐  

    2003   

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    Committee type:Academic society

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  • The Surface Finishing Society of Japan   Academic committee  

    2003   

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    Committee type:Academic society

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  • 日本応用磁気学会   総務幹事、編集委員  

    1999 - 2004   

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    Committee type:Academic society

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Papers

  • 高周波用フェライトめっき膜

    松下伸広, 阿部正紀, 近藤幸一, 吉田栄吉, 佐藤敏郎, 岡田 清

    表面技術   61 ( 6 )   31 - 37   2010.6

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    Language:Japanese   Publisher:(社)表面技術協会  

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  • Effect of Post-Annealing and Oxygen on the Properties of Sn-Doped β-Ga2O3 Thin Film

    Jihyeong Kim, Yuta Kubota, Nobuhiro Matsushita, Gonjae Lee, Sinsu Kyoung, Kyunghwan Kim, Jeongsoo Hong

    Transactions on Electrical and Electronic Materials   2025.5

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s42341-025-00623-x

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    Other Link: https://link.springer.com/article/10.1007/s42341-025-00623-x/fulltext.html

  • Hot-Injection Synthesis of Monodisperse π-SnS Nanocrystals

    Thanyarat Phutthaphongloet, Ricky Dwi Septianto, Retno Miranti, Kiyohiro Adachi, Yuta Kubota, Daisuke Hashizume, Nobuhiro Matsushita, Yoshihiro Iwasa, Satria Zulkarnaen Bisri

    ACS Applied Nano Materials   8 ( 19 )   9702 - 9710   2025.5

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acsanm.5c00710

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  • Selective synthesis of β-TaON: The critical influence of oxygen partial pressure in ammonolysis

    Mirabbos Hojamberdiev, Ronald Vargas, Lorean Madriz, Dilshod Nematov, Ulugbek Shaislamov, Hajime Wagata, Yuta Kubota, Kunio Yubuta, Katsuya Teshima, Nobuhiro Matsushita

    Dalton Transactions   54 ( 29 )   11193 - 11206   2025

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    The oxygen partial pressure critically governs the sequential phase transformation from Ta2O5 to Ta3N5via β-TaON. An oxygen flow rate of 0.25 L h−1 defines the narrow synthesis region necessary for obtaining phase-pure β-TaON.

    DOI: 10.1039/d5dt01193k

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  • ZnO thin films with controllable morphologies and crystal orientation fabricated by the mist spin spray method

    Lo Tuan Son, Yuta Kubota, Nobuhiro Matsushita

    Journal of the Ceramic Society of Japan   132 ( 12 )   668 - 674   2024.12

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    Publishing type:Research paper (scientific journal)   Publisher:Ceramic Society of Japan  

    DOI: 10.2109/jcersj2.24076

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  • Optimal pH condition for hydrogen production using δ-FeOOH under UV irradiation

    Seongmin Shin, Ken-ichi Katsumata, Yuta Kubota, Nobuhiro Matsushita, Jeongsoo Hong

    Optical Materials   157   116372 - 116372   2024.11

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.optmat.2024.116372

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  • Low-temperature fabrication of α-Mn<sub>2</sub>O<sub>3</sub> and Mn<sub>3</sub>O<sub>4</sub> thin films by the spin-spray method

    Michihiko Uemura, Yuta Kubota, Nobuhiro Matsushita

    Journal of the Ceramic Society of Japan   132 ( 3 )   99 - 103   2024.3

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    Publishing type:Research paper (scientific journal)   Publisher:Ceramic Society of Japan  

    DOI: 10.2109/jcersj2.23173

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  • Low-temperature fabrication of α-Mn2O3 and Mn3O4 thin films by the spin-spray method

    Michihiko Uemura, Yuta Kubota, Nobuhiro Matsushita

    Journal of the Ceramic Society of Japan   132 ( 3 )   2024.3

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    Language:English   Publishing type:Research paper (scientific journal)  

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  • Electrochemical difference between single‐ and poly‐crystalline LaF3 for a compact and low‐price fluoride ion sensor

    Kaito Kanda, Tetsuya Yamada, Yasuko Yanagida, Yuta Kubota, Nobuhiro Matsushita, Gen Mayanagi, Jumpei Washio, Nobuhiro Takahashi

    Electroanalysis   36 ( 4 )   2024.2

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    Abstract

    Fluoride ion sensor electrodes that use polycrystalline LaF3 prepared by low‐temperature sintering can reduce sensor size and fabrication costs; however, decreasing the sintering temperature deteriorates sensor performance. Further, it is unclear why the performance of polycrystalline LaF3 prepared at low temperatures is inferior to that of the single‐crystal LaF3. Thus, in this study, we investigated factors that deteriorate sensor response under low sintering temperatures, such as solution penetration, fluorine conductivity, and ion exchange. To this end, LaF3 was prepared by changing the sintering temperature, and the electrical characteristics and sensor performance were evaluated and compared with those of the single‐crystal LaF3. The sensor performances of LaF3 sintered at 900 °C (−9.3 mV/dec) and 1000 °C (−5.8 mV/dec) were inferior to that of a single‐crystal LaF3 (−49.9 mV/dec). LaF3 prepared by sintering over 800 °C achieved fluorine removal and showed lower ion conductivity and ion exchange compared to that of the single‐crystal LaF3. LaF3 sintered at 700 °C did not show a sensor response because of solution penetration into the through‐pore. Our results confirmed that solution penetration, ion conductivity, and ion exchange influence the sensor performance of LaF3. Finally, we discussed approaches to achieve high sensor performance with LaF3 prepared by low‐temperature sintering. The proposed approaches are expected to contribute to expanding the utility of fluoride ion sensor electrodes with LaF3.

    DOI: 10.1002/elan.202300318

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  • Cu2O films without impurities fabricated via the mist spin spray technique using a mixed alkaline solution for flexible glucose sensors

    Yutaka Fujita, Atsuko Yamasaki, Ryosuke Nitta, Yuta Kubota, Yuta Katayanagi, Nobuhiro Matsushita

    Thin Solid Films   787   140123 - 140123   2023.12

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.tsf.2023.140123

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  • Crystallized Cu<sub>2</sub>O films fabricated at low substrate temperature of 50–90 °C by spin-spray method

    Ayaka Endo, Ryosuke Nitta, Yuta Kubota, Nobuhiro Matsushita

    Journal of the Ceramic Society of Japan   131 ( 10 )   797 - 801   2023.10

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    Publishing type:Research paper (scientific journal)   Publisher:Ceramic Society of Japan  

    DOI: 10.2109/jcersj2.23034

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  • CeO<sub>2</sub> coatings on conductive polyethylene foams via gas-assisted liquid phase deposition and their humidity sensor performance

    Kensuke Saito, Nobuhiro Matsushita, Yuta Kubota

    Journal of the Ceramic Society of Japan   131 ( 8 )   376 - 382   2023.8

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    Publishing type:Research paper (scientific journal)   Publisher:Ceramic Society of Japan  

    DOI: 10.2109/jcersj2.23025

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  • Hydrogen donor formation in a solution-processed ZnO film by UV light irradiation

    Ryosuke Nitta, Yuta Kubota, Ayaka Endo, Hwai-En Lin, Tetsuo Kishi, Suguru Kitani, Hitoshi Kawaji, Nobuhiro Matsushita

    Applied Physics Letters   121 ( 22 )   2022.11

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    Publishing type:Research paper (scientific journal)   Publisher:AIP Publishing  

    A transparent ZnO film was deposited by the spin-spray method at a low temperature of 90 °C. Ultraviolet (UV) light irradiation to the film for 60 min decreased the film resistivity drastically by three orders of magnitude from 55.3 to 4.43 × 10−2 Ω cm. Time-of-flight secondary ion mass spectrometry (TOF-SIMS) depth profile and 1H solid-state nuclear magnetic resonance (NMR) spectroscopy analysis revealed that the as-deposited ZnO film before UV treatment contained a large amount of water in the ZnO crystal lattice, and hydrogen donors, including interstitial hydrogen in bond-centered sites (Hi), substitutional hydrogen on the oxygen lattice site (HO), and three O–H bonds in a zinc vacancy (VZn−H3), were generated in the ZnO film after UV treatment. From these results, the mechanism of the hydrogen donor formation was proposed in which UV irradiation to photocatalytic ZnO decomposed the water in the ZnO crystal lattice to form H+ and OH− ions, which associated with the oxygen and zinc vacancies, resulting in the formation of Hi, HO, and VZn−H3.

    DOI: 10.1063/5.0101593

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  • Fabrication of nanostructured CuO thin films with controllable optical band gaps using a mist spin spray technique at 90 °C

    Ryosuke Nitta, Yuta Kubota, Tetsuo Kishi, Nobuhiro Matsushita

    Thin Solid Films   762   139555 - 139555   2022.11

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.tsf.2022.139555

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  • Effects of Oxygen Content during Heat Treatment on Properties of Solution-Processed Cu2O-αFe2O3 Composite for Supercapacitor Application Reviewed

    Hwai En Lin, Michihiko Uemura, Yuta Kubota, Yuta Katayanagi, Tetsuo Kishi, Takanori Kiguchi, Tomoaki Watanabe, Tetsuji Yano, Nobuhiro Matsushita

    Journal of The Electrochemical Society   Volume 169 ( Number 10 )   100537 - 100537   2022.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:The Electrochemical Society  

    The Cu2O-αFe2O3 composite film was heated in air (FC-A), O2 (FC-O) and vacuum (FC-V) respectively to investigate the effects of heat-treated conditions on the material and electrochemical characteristics. As a result, the heat treatment did not significantly affect the morphology but the grain size and crystal phase of the materials. In accordance with the oxygen content in the heat treatment environment, the heat-treated composite films performed as a mixed phase containing mainly CuFe2O4, parts of αFe2O3 (relatively high O2 content) and Cu-Sn alloy (low O2 content). With tuning the oxygen content in/on the crystal lattice of CuFe2O4 and αFe2O3, the energy storage mechanism of the composite electrode could be modified from the comprehensively capacitive and pseudocapacitive effects to an independent EDLC behavior. Compared with the FC-O and FC-V electrodes, the FC-A electrode presented a better capacitance retention (1.8% capacitance loss up to 2,000 cycles) and the highest specific capacitance (176.2 F·g−1 at 0.5 mA·cm−2). The outstanding performance can be ascribed to its lower charge transfer resistance, the porous feature having faster ion transportation efficiency and the additional pseudocapacitance provided by the Faradaic redox reaction.

    DOI: 10.1149/1945-7111/ac9a79

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    Other Link: https://iopscience.iop.org/article/10.1149/1945-7111/ac9a79/pdf

  • Two-step electrochemical deposition of Ni(OH)2/FeOOH bilayer electrocatalyst for oxygen evolution reaction

    Asako Taniguchi, Kento Ishii, Thi Kim Ngan Nguyen, Tetsuo Uchikoshi, Yuta Kubota, Nobuhiro Matsushita, Yoshikazu Suzuki

    Materials Letters   317   132118 - 132118   2022.6

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.matlet.2022.132118

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  • π-SnS Colloidal Nanocrystals with Size-Dependent Band Gaps

    Retno Miranti, Ricky Dwi Septianto, Tomoka Kikitsu, Daisuke Hashizume, Nobuhiro Matsushita, Yoshihiro Iwasa, Satria Zulkarnaen Bisri

    The Journal of Physical Chemistry C   126 ( 11 )   5323 - 5332   2022.3

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.jpcc.2c00266

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  • CuO nanostructure-based flexible humidity sensors fabricated on PET substrates by spin-spray method

    Ryosuke Nitta, Hwai-En Lin, Yuta Kubota, Tetsuo Kishi, Tetsuji Yano, Nobuhiro Matsushita

    Applied Surface Science   572   151352 - 151352   2022.1

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.apsusc.2021.151352

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  • Novel Bending Sensor Based on a Solution-Processed Cu2O Film with High Resolution Covering a Wide Curvature Range

    Ryosuke Nitta, Ryo Taguchi, Yuta Kubota, Tetsuo Kishi, Atsushi Shishido, Nobuhiro Matsushita

    ACS Omega   6 ( 48 )   32647 - 32654   2021.11

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acsomega.1c04279

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  • Sequenced Successive Ionic Layer Adsorption and Reaction for Rational Design of Ni(OH)2/FeOOH Heterostructures with Tailored Catalytic Properties

    Asako Taniguchi, Yuta Kubota, Nobuhiro Matsushita, Kento Ishii, Thi Kim Ngan Nguyen, Tetsuo Uchikoshi, Yoshikazu Suzuki

    ACS Applied Energy Materials   4 ( 8 )   8252 - 8261   2021.8

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acsaem.1c01505

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  • LAYERED BISMUTH TUNGSTATE – HETEROGENEOUS PHOTOCATALYSIS FOR ENVIRONMENTAL REMEDIATION

    CHEMISTRY AND CHEMICAL ENGINEERING   3 - 11   2021.5

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    Publishing type:Research paper (scientific journal)   Publisher:Tashkent Institute of Chemical Technology  

    Air and water pollution has been one of the challenging environmental issues in modern society. Since the Honda-Fujishima effect was first reported in 1972, a semiconductor-based photocatalysis has been regarded as one of the most green and economical processes for potential application in environmental remediation. Bismuth-based semiconductors are regarded as a promising group of advanced photocatalytic materials due to their suitable band gap for visible light response, an increased mobility of photo-generated charge carriers because of well-dispersed Bi 6s orbital, non-toxicity, and easy tailoring of their morphologies. To utilize its full potential in environmental remediation, various studies have been carried out to enhance the photocatalytic performance of layered Bi2WO6, one of the simplest members of the Aurivillius oxide family of layered perovskites. This review introduces past achievements, the state of the art, and future perspectives in heterogeneous photocatalysis and its application in environmental remediation, particularly in photocatalytic air and water purification. The layered compounds, bismuth-based photocatalysts, and composite photocatalysts and their application in environmental remediation are discussed.

    DOI: 10.51348/rltw5118

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  • Stable formation of freestanding, submicron-thick tellurite glass film in molten glass lamella

    Ray Jay Jeng, Tetsuo Kishi, Kakeru Hirota, Nobuhiro Matsushita, Tetsuji Yano

    Journal of Non-Crystalline Solids   557   2021.4

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jnoncrysol.2021.120648

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  • スマートデバイス用マグネティックスの研究開発動向

    松下伸広

    2021.2

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    Language:Japanese  

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  • Room-temperature bonding method of bioactive ultrathin glass film on titanium by a dissolution-polymerization reaction

    Yin Liu, Tetsuo Kishi, Ray-Jay Jeng, Nobuhiro Matsushita, Tetsuji Yano

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   104 ( 1 )   218 - 228   2021.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1111/jace.17455

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  • The study of correlation between electrical conductivity of solution-processed ZnO film and UV irradiation

    Jeongsoo Hong, Hwai-En Lin, Ken-ichi Katsumata, Nobuhiro Matsushita

    Materials Science in Semiconductor Processing   120   105266 - 105266   2020.12

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.mssp.2020.105266

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  • Electron transport in iodide-capped core@shell PbTe@PbS colloidal nanocrystal solids

    Retno Miranti, Ricky Dwi Septianto, Maria Ibáñez, Maksym V. Kovalenko, Nobuhiro Matsushita, Yoshihiro Iwasa, Satria Zulkarnaen Bisri

    Applied Physics Letters   117 ( 17 )   2020.10

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    Publishing type:Research paper (scientific journal)   Publisher:AIP Publishing  

    Research in the field of colloidal semiconductor nanocrystals (NCs) has progressed tremendously, mostly because of their exceptional optoelectronic properties. Core@shell NCs, in which one or more inorganic layers overcoat individual NCs, recently received significant attention due to their remarkable optical characteristics. Reduced Auger recombination, suppressed blinking, and enhanced carrier multiplication are among the merits of core@shell NCs. Despite their importance in device development, the influence of the shell and the surface modification of the core@shell NC assemblies on the charge carrier transport remains a pertinent research objective. Type-II PbTe@PbS core@shell NCs, in which exclusive electron transport was demonstrated, still exhibit instability of their electron transport. Here, we demonstrate the enhancement of electron transport and stability in PbTe@PbS core@shell NC assemblies using iodide as a surface passivating ligand. The combination of the PbS shelling and the use of the iodide ligand contributes to the addition of one mobile electron for each core@shell NC. Furthermore, both electron mobility and on/off current modulation ratio values of the core@shell NC field-effect transistor are steady with the usage of iodide. Excellent stability in these exclusively electron-transporting core@shell NCs paves the way for their utilization in electronic devices.

    DOI: 10.1063/5.0025965

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  • One-pot synthesis of (anatase/bronze-type)-TiO2/carbon dot polymorphic structures and their photocatalytic activity for H2 generation

    Sovann Khan, Yuta Kubota, Wenwei Lei, Norihiro Suzuki, Kazuya Nakata, Chiaki Terashima, Nobuhiro Matsushita, Akira Fujishima, Ken-ichi Katsumata

    Applied Surface Science   526   146650 - 146650   2020.10

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.apsusc.2020.146650

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  • On-demand tuning of charge accumulation and carrier mobility in quantum dot solids for electron transport and energy storage devices

    Ricky Dwi Septianto, Liming Liu, Ferry Iskandar, Nobuhiro Matsushita, Yoshihiro Iwasa, Satria Zulkarnaen Bisri

    NPG Asia Materials   12 ( 1 )   2020.5

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    Assemblies of colloidal quantum dots (CQDs) are attractive for a broad range of applications because of the ability to exploit the quantum confinement effect and the large surface-to-volume ratio due to their small dimensions. Each application requires different types of assemblies based on which properties are intended to be utilized. Greater control of assembly formation and optimization of the related carrier transport characteristics are vital to advance the utilization of these materials. Here, we demonstrate on-demand control of the assembly morphology and electrical properties of highly crosslinked CQD solids through the augmentation of various assembly methods. Employment of electric-double-layer (EDL) gating on these assembly structures (i.e., an amorphous assembly, a hierarchical porous assembly, and a compact superlattice assembly) reveals their intrinsic carrier transport and accumulation characteristics. Demonstrations of high electron mobility with a high current modulation ratio reaching 105 in compact QD films and of a record-high areal capacitance of 400 μF/cm2 in an electric-double-layer supercapacitor with very thin (<100 nm) QD hierarchical porous assemblies signify the versatility of CQDs as building blocks for various modern electronic devices.

    DOI: 10.1038/s41427-020-0215-x

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    Other Link: http://www.nature.com/articles/s41427-020-0215-x

  • Characteristics of multifunctional Fe3O4/SiO2/ZrO2 structures prepared using two-step solution processes Reviewed

    S Kim, CW Bark, K Katsumata, N Matsushita

    MOL CRYST LIQ CRYST   Vol. 677 ( 1 )   19 - 26   2020.4

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    Language:English   Publisher:TAYLOR \& FRANCIS LTD  

    DOI: 10.1080/15421406.2019.1596250

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  • One-step direct fabrication of phase-pure Cu2O films via the spin-spray technique using a mixed alkaline solution

    Ryosuke Nitta, Yuta Kubota, Tetsuo Kishi, Tetsuji Yano, Nobuhiro Matsushita

    MATERIALS CHEMISTRY AND PHYSICS   243   2020.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.matchemphys.2019.122442

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  • Hydrogen Production System by Light‐Induced α‐FeOOH Coupled with Photoreduction Reviewed

    Tetsuya Yamada, Norihiro Suzuki, Kazuya Nakata, Chiaki Terashima, Nobuhiro Matsushita, Kiyoshi Okada, Akira Fujishima, Ken‐ichi Katsumata

    Chemistry–A European Journal   Vol. 26 ( No. 11 )   2020.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/chem.201903642

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  • Exclusive Electron Transport in Core@Shell PbTe@PbS Colloidal Semiconductor Nanocrystal Assemblies

    Retno Miranti, Daiki Shin, Ricky Dwi Septianto, Maria Ibáñez, Maksym V. Kovalenko, Nobuhiro Matsushita, Yoshihiro Iwasa, Satria Zulkarnaen Bisri

    ACS Nano   14 ( 3 )   3242 - 3250   2020.2

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acsnano.9b08687

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  • Tuning the morphological structure, light absorption, and photocatalytic activity of Bi2WO6 and Bi2WO6-BiOCl through cerium doping

    Mirabbos Hojamberdiev, Zukhra C. Kadirova, Ehsan Zahedi, Diego Onna, María Claudia Marchi, Gangqiang Zhu, Nobuhiro Matsushita, Masashi Hasegawa, Sara Aldabe Bilmes, Kiyoshi Okada

    Arabian Journal of Chemistry   13 ( 1 )   2844 - 2857   2020.1

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    Publishing type:Research paper (scientific journal)   Publisher:Scientific Scholar  

    DOI: 10.1016/j.arabjc.2018.07.014

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  • Solution-mediated nanometric growth of α-Fe2O3 with electrocatalytic activity for water oxidation

    Asako Taniguchi, Yuta Kubota, Nobuhiro Matsushita, Kento Ishii, Tetsuo Uchikoshi

    Nanoscale Advances   2 ( 9 )   3933 - 3941   2020

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    <p>This paper describes a simple, low-temperature, and environmentally friendly aqueous route for the layer-by-layer nanometric growth of crystalline α-Fe2O3.</p>

    DOI: 10.1039/d0na00345j

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  • Effects of UV irradiation on the electrical and optical properties of solution-processed transparent ZnO films Reviewed

    Hwai-En Lin, Jeong-Soo Hong, Ryosuke Nitta, Yuta Kubota, Yuta Katayanagi, Hajime Wagata, Tetsuo Kishi, Tetsuji Yano, Nobuhiro Matsushita

    Applied Surface Science   Vol. 489 ( No. )   135 - 141   2019.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.apsusc.2019.05.053

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  • Single Crystal ZrO2 Nanosheets Formed by Thermal Transformation for Solid Oxide Fuel Cells and Oxygen Sensors Reviewed

    Tetsuya Yamada, Yuta Kubota, Yuki Makinose, Norihiro Suzuki, Kazuya Nakata, Chiaki Terashima, Nobuhiro Matsushita, Kiyoshi Okada, Akira Fujishima, Ken-ichi Katsumata

    ACS Applied Nano Materials   Vol. 2 ( No. 11 )   2019.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acsanm.9b01312

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  • Solution-processed Cu2-xO-Fe2O3 composites as novel supercapacitor anodic materials Reviewed

    Hwai-En Lin, Yuta Kubota, Yuta Katayanagi, Tetsuo Kishi, Tetsuji Yano, Nobuhiro Matsushita

    Electrochimica Acta   Volume 323 ( 10 )   134794   2019.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.electacta.2019.134794

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  • Gas-assisted liquid phase deposition of crystalline ceria films

    Yuta Kubota, Tetsuo Kishi, Tetsuji Yano, Nobuhiro Matsushita

    SURFACE & COATINGS TECHNOLOGY   361   263 - 269   2019.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.surfcoat.2019.01.017

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  • Optical bonding of tellurite glass film on silicate glass

    Ray‐Jay Jeng, Tetsuo Kishi, Nobuhiro Matsushita, Tetsuji Yano

    International Journal of Applied Glass Science   10 ( 2 )   248 - 258   2019.1

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    Abstract

    Tellurite glass thin film was successfully bonded on a silicate glass substrate by the direct‐bonding (DB) method. Glass film (thickness 1‐3 μm) was fabricated by the glassblowing technique and the DB process was performed at room temperature at relative humidity (RH) of 62% or 15%. The surface adhesive strengths of the glass films bonded at 15% and 62% RH were measured as 250 and 96 mJ/m2, respectively, by the Obreimoff‐Metsik method. The hydroxyl (–OH) functional groups on the interface between the film and silicate glass were analyzed by Fourier‐transform infrared spectroscopy. The major bonding forces between the tellurite thin film and silicate glass were hydrogen bonds at 62% RH and bonds between Te on the tellurite glass and O on the silicate glass were concerned at 15% RH. These forces, contributed by Si–OH, were important for bond formation at 62%. The large amounts of water and OH groups on the silicate glass, determined by thermogravimetric analysis, indicated a weaker bonding process at 62% RH. This work will contribute toward reliable, high‐integrity components for integrated optical circuits, which are increasingly needed for high‐throughput data transfer.

    DOI: 10.1111/ijag.13094

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  • Liquid-phase atomic layer deposition of crystalline hematite without post-growth annealing

    Asako Taniguchi, Takaaki Taniguchi, Hajime Wagata, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    CrystEngComm   21 ( 28 )   4184 - 4191   2019

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    <p>We carried out the liquid phase-atomic layer deposition (LP-ALD) of α-Fe2O3. The deposition temperature (95 °C) and rate (6.3 nm min−1) are much lower and higher than those offered by cutting edge gas-phase ALD techniques, respectively.</p>

    DOI: 10.1039/c9ce00584f

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  • One step fabrication of ZnO films using a modified gas-assisted liquid phase deposition process

    Yuta Kubota, Tetsuo Kishi, Tetsuji Yano, Nobuhiro Matsushita

    Chemistry Letters   48 ( 4 )   382 - 385   2019

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    DOI: 10.1246/cl.180975

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  • A solution-processed tin dioxide film applicable as a transparent and flexible humidity sensor Reviewed International journal

    Hwai-En Lin, Yuta Katayanagi, Tetsuo Kishi, Tetsuji Yano, Nobuhiro Matsushita

    RSC Advances   8 ( 53 )   30310 - 30319   2018.8

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    DOI: 10.1039/C8RA04355H

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  • Fully Depleted Ti-Nb-Ta-Zr-O Nanotubes: Interfacial Charge Dynamics and Solar Hydrogen Production Reviewed

    Yi Hsuan Chiu, Ting Hsuan Lai, Chun Yi Chen, Ping Yen Hsieh, Kazunari Ozasa, Mitsuo Niinomi, Kiyoshi Okada, Tso Fu Mark Chang, Nobuhiro Matsushita, Masato Sone, Yung Jung Hsu

    ACS Applied Materials and Interfaces   10 ( 27 )   22997 - 23008   2018.7

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    DOI: 10.1021/acsami.8b00727

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  • Fabrication of nitrogen-doped ZnO nanorod arrays by hydrothermal synthesis and ambient annealing Reviewed International journal

    Ryosuke Kobayashi, Tetsuo Kishi, Yuta Katayanagi, Tetsuji Yano, Nobuhiro Matsushita

    RSC Advances   8 ( 42 )   23599 - 23605   2018.6

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    DOI: 10.1039/c8ra04168g

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  • Core-shell structured Mn-Zn-Fe ferrite/Fe-Si-Cr particles for magnetic composite cores with low loss Reviewed

    Satoshi Mori, Takeshi Mitsuoka, Kanako Sugimura, Ryosuke Hirayama, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita

    Advanced Powder Technology   29 ( 6 )   1481-1486   2018.6

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  • Compositional redistribution in CaO–Al2O3–SiO2 glass induced by the migration of a steel microsphere due to continuous-wave-laser irradiation Reviewed

    Tetsuo Kishi, Tetsuto Kokan, Yukihiro Yoshida, Tatsuki Iwamoto, Hirofumi Hidai, Fumiya Noritake, Nobuhiro Matsushita, Tetsuji Yano

    Optics Express   Vol. 26 ( No. 10 )   13020 - 13026   2018.5

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    DOI: 10.1364/OE.26.013020

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  • In vivo osteoconductivity of surface modified Ti-29Nb-13Ta-4.6Zr alloy with low dissolution of toxic trace elements

    Eri Takematsu, Kimihiro Noguchi, Kensuke Kuroda, Toshiyuki Ikoma, Mitsuo Niinomi, Nobuhiro Matsushita

    PLOS ONE   13 ( 1 )   e0189967 - e0189967   2018.1

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    DOI: 10.1371/journal.pone.0189967

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  • Photocatalytic reduction of CO2 on Cu2O-loaded Zn-Cr layered double hydroxides Reviewed

    Jiang, Haoyang, Katsumata, Ken-ichi, Hong, Jeongsoo, Yamaguchi, Akira, Nakata, Kazuya, Terashima, Chiaki, Matsushita, Nobuhiro, Miyauchi, Masahiro, Fujishima, Akira

    Applied Catalysis B: Environmental   224   783 - 790   2018

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    DOI: 10.1016/j.apcatb.2017.11.011

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  • Anisotropic growth of gas-liquid precipitated ceria mesocrystals to wires several micrometers in length

    Yuta Kubota, Tetsuo Kishi, Tetsuji Yano, Nobuhiro Matsushita

    RSC ADVANCES   8 ( 43 )   24370 - 24375   2018

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    DOI: 10.1039/c8ra05362f

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  • Influence of BiOI content on the photocatalytic activity of Bi2WO6/BiOI/allophane composites and molecular modeling studies of acetaldehyde adsorption Reviewed

    Mirabbos Hojamberdiev, Zukhra C. Kadirova, Yuki Makinose, Gangqiang Zhu, Nobuhiro Matsushita, Juan Rodriguez, Sara Aldabe Bilmes, Masashi Hasegawa, Kiyoshi Okada

    JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS   81   258 - 264   2017.12

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    DOI: 10.1016/j.jtice.2017.10.008

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  • Involving CeVO4 in improving the photocatalytic activity of a Bi2WO6/allophane composite for the degradation of gaseous acetaldehyde under visible light

    Mirabbos Hojamberdiev, Zuhra C. Kadirova, Yuki Makinose, Gangqiang Zhu, Saim Emin, Nobuhiro Matsushita, Masashi Hasegawa, Kiyoshi Okada

    COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS   529 ( April )   600 - 612   2017.9

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    DOI: 10.1016/j.colsurfa.2017.06.047

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  • Influence of Surface Morphology and Conductivity on Photocatalytic Performance of Solution-Processed Zinc Oxide Film Reviewed

    Jeongsoo Hong, Nobuhiro Matsushita, Takashi Shirai, Kazuya Nakata, Chiaki Terashima, Akira Fujishima, Ken-ichi Katsumata

    CHEMISTRY-AN ASIAN JOURNAL   12 ( 18 )   2480 - 2485   2017.9

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    DOI: 10.1002/asia.201700807

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  • Syntheses of iron oxide nanoplates by hydrothermal treatment of iron-oleate precursor and their magnetization reversal

    Yuuki Kamei, Kenichi Wakayama, Yuki Makinose, Yasushi Endo, Nobuhiro Matsushita

    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS   223   70 - 75   2017.9

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    DOI: 10.1016/j.mseb.2017.06.005

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  • Comparative Study of Crystallographic and Electrical Properties of Zinc Oxide Films Fabricated by Dry and Wet Processes Reviewed

    Jeongsoo Hong, Minjong Keum, Ken-ichi Katsumata, Takashi Shirai, Nobuhiro Matsushita, Kyunghwan Kim

    SCIENCE OF ADVANCED MATERIALS   9 ( 9 )   1678 - 1682   2017.9

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    DOI: 10.1166/sam.2017.3176

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  • 高温ガラス融体の表面張力を利用した球状光学素子の作製と光機能

    岸 哲生, 熊谷 傳, 松下 伸広, 矢野 哲司

    Colloid & Interface Communication   2017.5

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  • Fe2O3-loaded activated carbon fiber/polymer materials and their photocatalytic activity for methylene blue mineralization by combined heterogeneous-homogeneous photocatalytic processes Reviewed

    Zukhra C. Kadirova, Mirabbos Hojamberdiev, Ken-Ichi Katsumata, Toshihiro Isobe, Nobuhiro Matsushita, Akira Nakajima, Kiyoshi Okada

    APPLIED SURFACE SCIENCE   402   444 - 455   2017.4

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    DOI: 10.1016/j.apsusc.2017.01.131

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  • High permeability and low loss of Ni-Zn-Fe ferrite/metal composite cores in high frequency region Reviewed

    Mori, S., Mitsuoka, T., Sonehara, M., Sato, T., NOBUHIRO MATSUSHITA

    AIP Advances   Vol. 7 ( No. 5 )   P.#056657 (7 pages)   2017.2

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    DOI: 10.1063/1.4976945

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  • Synthesis of Magnetic Iron Oxide Nanosheets with Large Lateral Size Using Iron-Oleate Complex

    Yuuki KAMEI, Kenichi WAKAYAMA, Tetsuo KISHI, Tetsuji YANO, Nobuhiro MATSUSHITA

    Journal of the Japan Society of Powder and Powder Metallurgy   64 ( 7 )   372 - 377   2017

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    DOI: 10.2497/jjspm.64.372

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  • Fabrication of Al-Doped ZnO Film with High Conductivity Induced by Photocatalytic Activity Reviewed

    Hong, J., Katsumata, Matsushita, N.

    Journal of Elec Materi   Vol. 45, Issue 10 ( 45 )   4875 - 4880   2016.10

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    DOI: 10.1007/s11664-016-4751-7

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  • 層状腹水酸化物を用いた光触媒材料の作製

    勝又 健一, 中田一弥, 寺島千晶, 藤島昭, 姜 浩陽, 松下 伸広

    東京理科大光触媒国際研究センターの最新研究動向 会報光触媒   Vol. 50   2016.10

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  • Adhesive strength of bioactive oxide layers fabricated on TNTZ alloy by three different alkali-solution treatments Reviewed

    E. Takematsu, K. Cho, J. Hieda, M. Nakai, K. Katsumata, KIYOSHI OKADA, M. Niinomi, N. Matsushita

    Journal of the Mechanical Behavior of Biomedical Materials   Vol. 61   174–181   2016.8

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    DOI: 10.1016/j.jmbbm.2015.12.046

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  • Low temperature Solution-Processed ZnO film on flexible substrate Reviewed

    JeongSoo Hong, Hajime Wagata, Ken-ichi Katsumata, Nobuhiro Matsushita

    MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING   47   20 - 24   2016.6

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    DOI: 10.1016/j.mssp.2016.02.010

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  • Bioactive surface modification of Ti-29Nb-13Ta-4.6Zr alloy through alkali solution treatments Reviewed

    Eri Takematsu, Kenichi Katsumata, Kiyoshi Okada, Mitsuo Niinomi, Nobuhiro Matsushita

    Materials Science & Engineering C   Vol. 62 ( 62 )   662 - 667   2016.5

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    DOI: 10.1016/j.msec.2016.01.041

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  • The Morphological Properties of Heterostructured Fe3O4/ZnO Film by Aqueous Solution Process

    J. S. Hong, K. Katsumata, N. Matsushita

    IEEE Transactions on Magnetics   52 ( 5 )   1 - 5   2016.5

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    DOI: 10.1109/tmag.2015.2513740

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  • New Dion-Jacobson Phase Three-Layer Perovskite CsBa2Ta3O10 and Its Conversion to Nitrided Ba2Ta3O10 Nanosheets via a Nitridation-Protonation-Intercalation-Exfoliation Route for Water Splitting Reviewed

    Mirabbos Hojamberdiev, Maged F. Bekheet, Ehsan Zahedi, Hajime Wagata, Yuuki Kamei, Kunio Yubuta, Aleksander Gurlo, Nobuhiro Matsushita, Kazunari Domen, Katsuya Teshima

    CRYSTAL GROWTH & DESIGN   16 ( 4 )   2302 - 2308   2016.4

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    DOI: 10.1021/acs.cgd.6b00081

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  • Porous magnetite secondary particles prepared by surfactant-free solvothermal method with non-contact heat-assisted drug releasing property Reviewed

    Kim a, d Ken-ichi, Okada, Nobuhiro Matsushita

    Advanced Powder Technology   Vol. 27 ( No. 2 )   513 - 520   2016.3

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    DOI: 10.1016/j.apt.2016.02.003

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  • Three‐Dimensionally Extended Host Electrodes for Biosensor Applications

    Yu‐Chun Lo, Kuan‐Ting Lee, Yi‐Ching Liang, Dai‐Ming Liu, Nobuhiro Matsushita, Toshiyuki Ikoma, Shih‐Yuan Lu

    ChemElectroChem   3 ( 4 )   552 - 557   2016.1

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    Abstract

    A new concept of three‐dimensionally extended host electrodes is proposed with the fabrication and applications of fluorine‐doped tin oxide (FTO) nanorod array based host electrodes as an example. The FTO nanorod arrays were grown on top of commercial FTO glass through a vapor–liquid–solid process by using Au nanocrystals as the anisotropic growth catalyst, tin powders as the precursor, and NH4F as the fluorine source. This three‐dimensionally extended FTO nanostructure was then decorated with Pt nanocrystals, using a polyol method, to serve as a non‐enzymatic sensing electrode for H2O2. These FTO nanorods not only offer greatly enlarged sensing areas and fast charge transport channels, but also significantly enhance the hydrophilicity of the electrode, all of which are beneficial for the electrochemical sensing of aqueous samples. A two order of magnitude improvement in sensitivity toward H2O2 over the plain commercial FTO glass was achieved, reaching a high sensitivity value of 543 mA M−1 cm2.

    DOI: 10.1002/celc.201500524

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/celc.201500524

  • Facet control of ceria nanocrystals synthesized by an oleate-modified hydrothermal method Reviewed

    Yuki Makinose, Takaaki Taniguchi, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    Advanced Powder Technology   Vol. 27 ( No. 1 )   64 - 71   2016.1

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    DOI: 10.1016/j.apt.2015.10.004

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  • High-conductivity solution-processed ZnO films realized via UV irradiation and hydrogen treatment

    Jeongsoo Hong, Ken-ichi Katsumata, Nobuhiro Matsushita

    Acta Materialia   103   844 - 849   2016.1

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    DOI: 10.1016/j.actamat.2015.11.013

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  • Extracellular Electron Transfer of &lt;i&gt;Pseudomonas stutzeri&lt;/i&gt; Driven by Lithotrophic and Mixotrophic Denitrification

    Tetsuya YAMADA, Satoshi KAWAICHI, Akihisa MATSUYAMA, Minoru YOSHIDA, Nobuhiro MATSUSHITA, Ryuhei NAKAMURA

    Electrochemistry   84 ( 5 )   312 - 314   2016

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    DOI: 10.5796/electrochemistry.84.312

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  • Preparation and phase transformation of Ag or Bi ion-exchanged layered niobate perovskite and their photocatalytic properties Reviewed

    Xu, Nan, Takei, Takahiro, Miura, Akira, Kumada, Nobuhiro, Katsumata, Ken-ichi, Matsushita, Nobuhiro, Okada, Kiyoshi

    Journal of the Ceramic Society of Japan   123 ( 1440 )   690 - 694   2015.8

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    DOI: 10.2109/jcersj2.123.690

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  • Transparent ZnO Films Deposited by Aqueous Solution Process Under Various pH Conditions Reviewed

    Jeong Soo Hong, Hajime Wagata, Naoki Ohashi, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    JOURNAL OF ELECTRONIC MATERIALS   44 ( 8 )   2657 - 2662   2015.8

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    DOI: 10.1007/s11664-015-3670-3

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  • Low-temperature synthesis of lanthanum strontium cobalt ferrite by the citrate complex method adding oleic acid Reviewed

    Shin Mimuro, Yuki Makinose, Nobuhiro Matsushita

    ADVANCED POWDER TECHNOLOGY   26 ( 4 )   1245 - 1249   2015.7

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    DOI: 10.1016/j.apt.2015.06.006

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  • Study on the Effect of Pt Intercalation into Layered Niobate Perovskite for Photocatalytic Behavior Reviewed

    Nan Xu, Takahiro Takei, Akira Miura, Nobuhiro Kumada, Ken-ichi Katsumata, NOBUHIRO MATSUSHITA

    Langmuir   Vol. 31   7660 - 7665   2015.6

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    DOI: 10.1021/acs.langmuir.5b01958

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  • Highly dispersed iron oxide nanoparticles synthesized by solvothermal method adding electrostatic stabilizers Reviewed

    Sang Mo Kim, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    IEEE Transactions on Magnetics   Vol. 51   2015.6

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    DOI: 10.1109/TMAG.2015.2394445

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  • Nitrogen-doped ZnO Rods Synthesized from an Ammine-Hydroxo Zinc Complex Reviewed

    Taiki Ihara, Ken-ichi Katsumata, Tomoaki Watanabe, Kiyoshi Okada, Nobuhiro Matsushita

    CHEMISTRY LETTERS   44 ( 5 )   651 - 653   2015.5

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    DOI: 10.1246/cl.141195

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  • Cross-sectional Observation of Nanostructured Catalyst Layer of Polymer Electrolyte Fuel Cell using FIB/SEM Reviewed International journal

    Yuta Katayanagi, Takahiro Shimizu, Yoshiyuki Hashimasa, Nobuhiro Matsushita, Yohtaro Yamazaki, Takeo Yamaguchi

    Journal of Power Sources   Vol. 280   210 - 216   2015.4

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    DOI: 10.1016/j.jpowsour.2015.01.085

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  • Porous ZrO2 Sheets Synthesized Using an Ionothermal Method and Their Absorption Properties Reviewed

    Tetsuya Yamada, Ken-ichi Katsumata, Nobuhiro Matsushita, Kiyoshi Okada

    Dalton Transactions   Vol. 44 ( 4 )   8247 - 8254   2015.3

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    DOI: 10.1039/c4dt03737e

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  • ZnO-Graphene Composites as Practical Photocatalysts for Gaseous Acetaldehyde Degradation and Electrolytic Water Oxidation Reviewed

    Yu-Chih Chen, Ken-ichi Katsumata, Yi-Hsuan Chiu, Kiyoshi Okada, Nobuhiro Matsushita, Yung-Jung Hsu

    Applied Catalysis A: General   Vol. 490 ( 490 )   1 - 9   2015.1

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    DOI: 10.1016/j.apcata.2014.10.055

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  • Self-organization of TiO2 Nanobamboos by Anodization with Deep Eutectic Solvent Reviewed

    Chun-Yi Chen, Kazunari Ozasa, Fusao Kitamura, Ken-ichi Katsumata, Mizuo Maeda, Kiyoshi Okada, Nobuhiro Matsushita

    Electrochimica Acta   Vol. 153 ( 153 )   409 - 415   2015.1

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    DOI: 10.1016/j.electacta.2014.11.084

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  • Design of an active and durable catalyst for oxygen reduction reactions using encapsulated Cu with N-doped carbon shells (Cu@N-C) activated by CO2 treatment Reviewed

    Seung Hyo Noh, Min Ho Seo, Xiao Ye, Yuki Makinose, Takeyoshi Okajima, Nobuhiro Matsushita, Byungchan Han, Takeo Ohsaka

    JOURNAL OF MATERIALS CHEMISTRY A   3 ( 44 )   22031 - 22034   2015

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    DOI: 10.1039/c5ta06108c

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  • Embedded planar power inductor technology for package-level DC power grid

    Kondo, Y., Yazaki, Y., Sonehara, M., Sato, T., Watanabe, T., Seino, Y., NOBUHIRO MATSUSHITA, Fujii, T., Kobayashi, K., Shimizu, H., Yanagisawa, Y., Someya, T., Fuketa, H., Takamiya, M., Sakurai, T.

    ICEP-IAAC 2015 - 2015 International Conference on Electronic Packaging and iMAPS All Asia Conference   2015

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    DOI: 10.1109/ICEP-IAAC.2015.7111123

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  • Preparation of Bi2WO6- and BiOI-allophane composites for efficient photodegradation of gaseous acetaldehyde under visible light Reviewed

    Mirabbos Hojamberdiev, Ken-ichi Katsumata, Nobuhiro Matsushita, Kiyoshi Okada

    APPLIED CLAY SCIENCE   101   38 - 43   2014.11

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    DOI: 10.1016/j.clay.2014.07.007

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  • Embedded Planar Power Inductor in an Organic Interposer for Package-Level DC Power Grid

    Yuichiro Yazaki, Kazuma Ishidate, Kazuhiro Hagita, Yuta Kondo, Saki Hattori, Makoto Sonehara, Toshiro Sato, Tetsuro Watanabe, Yuto Seino, Nobuhiro Matsushita

    IEEE TRANSACTIONS ON MAGNETICS   Vol. 50 ( No. 11 )   2014.11

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    DOI: 10.1109/TMAG.2014.2327965

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  • LSIパッケージレベルDCパワーグリッドにおけるDC-DCコンバータ用薄型インダクタの開発 (電子部品・材料)

    矢崎 裕一朗, 近藤 雄太, 石立 一馬, 荻田 和洋, 渡辺 哲朗, 清野 裕斗, 曽根原 誠, 佐藤 敏郎, 松下伸広

    2014.10

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  • Porous fluorine-doped tin oxide as a promising substrate for electrochemical biosensors – demonstration in hydrogen peroxide sensing

    Kuan-Ting Lee, Dai-Min Liu, Yung-Yung Liang, Nobuhiro Matsushita, Toshiyuki Ikoma, Shih-Yuan Lu

    Journal of Materials Chemistry B   Vol. 2 ( No. 44 )   2014.9

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    DOI: 10.1039/c4tb01191k

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  • Investigation of the effect of oxygen gas on properties of GAZO thin films fabricated by facing targets sputtering system Reviewed

    Jeong Soo Hong, Nobuhiro Matsushita, Kyung Hwan Kim

    SEMICONDUCTOR SCIENCE AND TECHNOLOGY   29 ( 7 )   2014.7

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    DOI: 10.1088/0268-1242/29/7/075007

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  • Characterization of grain boundary conductivity of spin-sprayed ferrites using scanning microwave microscope Reviewed

    J. Myers, T. Nicodemus, Y. Zhuang, T. Watanabe, N. Matsushita, M. Yamaguchi

    JOURNAL OF APPLIED PHYSICS   115 ( 17 )   2014.5

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    DOI: 10.1063/1.4860941

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  • Preparation of iron oxide-impregnated spherical granular activated carbon-carbon composite and its photocatalytic removal of methylene blue in the presence of oxalic acid Reviewed

    Zukhra C. Kadirova, Mirabbos Hojamberdiev, Ken-ichi Katsumata, Toshihiro Isobe, Nobuhiro Matsushita, Akira Nakajima, Khasan T. Sharipov, Kiyoshi Okada

    Journal of Environmental Science and Health, Part A   Vol. 49 ( 7 )   763 - 769   2014.3

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    DOI: 10.1080/10934529.2014.882185

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    Other Link: http://orcid.org/0000-0002-2726-6728

  • Fabrication of Heterostructured α-Fe2O3 / ZnO Film for Photoelectrode by Aqueous Solution Process Reviewed

    Jeong Soo Hong, Tetsuro Watanabe, Hajime Wagata, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    Journal of the Japan Society of Powder and Powder Metallurgy   ( 61 )   S324 - S326   2014.3

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  • Adsorption and photodegradation of methylene blue with Fe2O3-activated carbons under UV illumination in oxalate solution Reviewed

    Zukhra C. Kadirova, Ken-ichi Katsumata, Toshihiro Isobe, Nobuhiro Matsushita, Akira Nakajima, Kiyoshi Okada

    Journal of Environmental Chemical Engineering   Vol. 2 ( 2 )   2026 - 2036   2014.3

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    DOI: 10.1016/j.jece.2014.03.002

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  • Hydrothermal synthesis and visible-light-driven photocatalytic activity of allophane-wakefieldite-(Ce) composite Reviewed

    Mirabbos Hojamberdiev, Yuki Makinose, Ken-ichi Katsumata, Toshihiro Isobe, Nobuhiro Matsushita, Kiyoshi Okada

    Advanced Materials Research   Vol. 896 ( 896 )   545 - 548   2014.2

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    DOI: 10.4028/www.scientific.net/AMR.896.545

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  • Photodegradation of gaseous acetaldehyde and methylene blue in aqueous solution with titanium dioxide-loaded activated carbon fiber polymer materials and aquatic plant ecotoxicity tests Reviewed

    Zukhra C. Kadirova, Mirabbos Hojamberdiev, Ken-ichi Katsumata, Toshihiro Isobe, Nobuhiro Matsushita, Akira Nakajima, Kiyoshi Okada

    Environmental Science and Pollution Research   Vol. 21 ( 6 )   4309 - 4319   2014.1

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    DOI: 10.1007/s11356-013-2405-3

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  • Template-free solvothermal preparation of ZnO hollow microspheres covered with c planes Reviewed

    Taiki Ihara, Hajime Wagata, Toshihiro Kogure, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    RSC ADVANCES   4 ( 48 )   25148 - 25154   2014

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    DOI: 10.1039/c4ra02877e

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  • Synthesis of Heterostructured In2O3/BiOCl powders and their visible-light-driven photocatalytic activity for the degradation of Rhodamine B

    Gangqiang Zhu, Mirabbos Hojamberdiev, Ken-Ichi Katsumata, Nobuhiro Matsushita, Kiyoshi Okada, Peng Liu, Jianping Zhou, Yun Liu

    Advanced Powder Technology   25 ( 4 )   1292 - 1303   2014

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    DOI: 10.1016/j.apt.2014.03.008

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  • A featured issue by guest editors "ceramics processing through energy consumption reduction (green processing)" preface

    Wakiya, N., Takahashi, J., Suzuki, H., Murase, T., Masumoto, H., Aono, H., Adachi, N., NOBUHIRO MATSUSHITA, Sakamoto, N.

    Journal of the Ceramic Society of Japan   2014

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    DOI: 10.2109/jcersj2.122.P1-1

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  • A Self-Assembly Route to an Iron Phthalocyanine/Reduced Graphene Oxide Hybrid Electrocatalyst Affording an Ultrafast Oxygen Reduction Reaction Reviewed

    Takaaki Taniguchi, Hikaru Tateishi, Shinnsuke Miyamoto, Kazuto Hatakeyama, Chikako Ogata, Asami Funatsu, Shinya Hayami, Yuki Makinose, Nobuhiro Matsushita, Michio Koinuma, Yasumichi Matsumoto

    PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION   30 ( 12 )   1063 - 1070   2013.12

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    DOI: 10.1002/ppsc.201300177

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  • Biocompatibility of titanium dioxide film modified by femtosecond laser irradiation

    Masahiro Tsukamoto, Nobuyuki Abe, Togo Shinonaga, Akiko Nagai, Kimihiro Yamashita, Takao Hanawa, Nobuhiro Matsushita, Xie Guoqiang

    International Conference on Processing & Manufacturing of Advanced Materials (THERMEC'2013)   2013.12

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  • Adsorption and photodegradation of methylene blue by iron oxide impregnated on granular activated carbons in an oxalate solution Reviewed

    Zukhra C. Kadirova, Ken-ichi Katsumata, Toshihiro Isobe, Nobuhiro Matsushita, Akira Nakajima, Kiyoshi Okada

    Applied Surface Science   Vol. 284 ( 284 )   72 - 79   2013.11

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    DOI: 10.1016/j.apsusc.2013.07.014

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  • Effect of thermal treatment on crystallographic and electrical properties of transparent conductive ZnO films deposited by spin-spray method Reviewed

    JeongSoo Hong, Hajime Wagata, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    Japanese Journal of Applied Physics   Vol. 52 ( 52 )   110108   2013.10

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    DOI: 10.7567/JJAP.52.110108

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  • オレイン酸被覆水熱成長法による機能性ナノ粒子の合成と両親媒性

    松下伸広, 谷口貴章

    Vol. 47 ( No. 8 )   2013.8

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  • Solution Process for Synthesizing Bioactive Nano-Mesh Layer on Ti-Based Bulk Metallic Glasses

    Yuriko Fukushima, Ken-ichi Katsumata, Zhu Shengli, Xie Guoqiang, Mitsuo Niinomi, Kiyoshi Okada, Nobuhiro Matsushita

    Materials Transactions   54 ( 8 )   1343 - 1346   2013.7

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    DOI: 10.2320/matertrans.MF201312

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  • Preparation and photocatalytic reduction of CO2 on noble metal (Pt, Pd, Au) loaded Zn-Cr layered double hydroxides Reviewed

    Ken-ichi Katsumata, Kazuya Sakai, Kei Ikeda, Gabriela Carja, Nobuhiro Matsushita, Kiyoshi Okada

    Materials Letters   ( 107 )   138 - 140   2013.7

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    DOI: 10.1016/j.matlet.2013.05.132

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  • Heterostructured Fe3O4/Bi2O2CO3 photocatalyst: Synthesis, characterization and application in recyclable photodegradation of organic dyes under visible light irradiation Reviewed

    Gangqiang Zhu, Mirabbos Hojamberdiev, Ken-ichi Katsumata, Xu Cai, Nobuhiro Matsushita, Kiyoshi Okada, Peng Liu, Jianping Zhou

    Materials Chemistry and Physics   Vol. 142 ( 142 )   95 - 105   2013.6

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    DOI: 10.1016/j.matchemphys.2013.06.046

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  • Synthesis of In2O3/BiOCl Composite Photocatalyst and Its Photocatalytic Activity for the Degradation of Rhodamine B und Visible Light Irradiation Reviewed

    Gangqiang Zhu, Mirabbos Hojamberdiev, Ken-ichi Katsumata, Nobuhiro Matsushita, Kiyoshi Okada, Peng Liu, Jianping Zhou

    Advanced Materials Research   Vol. 747 ( 747 )   635 - 638   2013.6

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    DOI: 10.4028/www.scientific.net/AMR.747.635

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  • フェライトナノ粒子凝集体での赤色変化のメカニズム解明

    西村一寛, 松下伸広

    東京工業大学応用セラミックス研究所共同利用研究報告書   2012   153 - 155   2013.6

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  • 界面活性剤被覆水熱成長法によるナノサイズフェライトの構造・分散性制御

    牧之瀬 佑旗, 谷口 貴章, 勝又 健一, 松下 伸広

    2013.6

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  • Science and Technology for Advanced Sustainable Ceramics" Preface

    Hiroyo Segawa, Naoki Ohashi, YUJI MATSUMOTO, NOBUHIRO MATSUSHITA

    Journal of the Ceramic Society of Japan   Vol. 121   2013.4

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  • Crystal-face dependence of photoinduced hydrophilic conversion on SrTiO3 surfaces Reviewed

    Ken-ichi Katsumata, Yuki Okayasu, Nobuhiro Matsushita, Kiyoshi Okada

    Chemistry Letters   ( 46 )   618 - 620   2013.4

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    DOI: 10.1246/cl.130115

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  • Preparation of graphitic carbon nitride (g-C3N4)/WO3 composites and enhanced visible-light-driven photodegradation of acetaldehyde gas Reviewed

    Ken-ichi Katsumata, Ryosuke Motoyoshi, Nobuhiro Matsushita, Kiyoshi Okada

    Journal of Hazardous Materials   ( 260 )   475 - 482   2013.4

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    DOI: 10.1016/j.jhazmat.2013.05.058

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  • Fabrication of a Zn ferrite thick film planar power inductor for DC-DC converter LSI package Reviewed

    Shinya Okazaki, Asako Takeuchi, Akihrio Takeshima, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita

    ELECTRONICS AND COMMUNICATIONS IN JAPAN   96 ( 4 )   53 - 60   2013.4

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    DOI: 10.1002/ecj.10425

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  • Granular activated carbons impregnated by iron oxide (Fe-GACs) for simultaneous adsorption and photodecomposition of methylene blue in an oxalate solution Reviewed

    Zukhra C. Kadirova, Ken-ichi Katsumata, Mirabbos Hojamberdiev, Toshihiro Isobe, Nobuhiro Matsushita, Akira Nakajima, Kiyoshi Okada

    Advanced Materials Research   Vol. 795 ( No. )   153 - 157   2013.3

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    DOI: 10.4028/www.scientific.net/AMR.795.153

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  • Femtosecond laser induced periodic nanostructures on titanium dioxide film for improving biocompatibility

    T. Shinonaga, N. Horiguchi, M. Tsukamoto, A. Nagai, K. Yamashita, T. Hanawa, N. Matsushita, G. Xie, N. Abe, JJ Dubowski, DB. Geohegan, F. Trager

    Synthesis and Photonics of Nanoscale Materials X   vol. 8609   86090N-1 - 86090N-6   2013.3

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    DOI: 10.1117/12.2005706

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  • 省エネルギーや環境負荷低減に寄与する磁石材料・磁性材料

    松下伸広

    粉体および粉末冶金   2013.3

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    DOI: 10.2497/jjspm.60.102

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  • Visible-Light-Driven Photodegradation of Acetaldehyde Gas Catalyzed by Aluminosilicate Nanotubes and Cu(II)-Grafted TiO2 Composites Reviewed

    Ken-ichi Katsumata, Xiao Hou, Munetoshi Sakai, Akira Nakajima, Akira Fujishima, Nobuhiro Matsushita, Kenneth J.D. MacKenzie, Kiyoshi Okada

    Applied Catalysis B: Environmental   Vol. 138-139 ( 138-139 )   243 - 252   2013.3

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    DOI: 10.1016/j.apcatb.2013.03.004

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  • Effect of dopants and thermal treatment on properties of Ga-Al-ZnO thin films fabricated by hetero targets sputtering system Reviewed

    JeongSoo Hong, Nobuhiro Matsushita, KyungHwan Kim

    THIN SOLID FILMS   531   238 - 242   2013.3

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    DOI: 10.1016/j.tsf.2013.01.089

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  • One-step hydrothermal synthesis and photocatalytic performance of ZnWO4/Bi2WO6 composite photocatalyst for efficient degradation of acetaldehyde under UV light irradiation Reviewed

    Mirabbos Hojamberdiev, Ken-ichi Katsumata, Koji Morita, Sara Aldabe Bilmes, Nobuhiro Matsushita, Kiyoshi Okada

    Applied Catalysis A: General   Vol. 457   12 - 20   2013.3

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    Bi2WO6 with different Bi3+ ion concentrations (0&amp;#8211;30 mol%) is incorporated with the ZnWO4 photocatalyst to improve the photocatalytic efficiency by forming a ZnWO4/Bi2WO6 composite photocatalyst with hierarchical heterostructure via a one-step hydrothermal method. X-ray diffraction and Raman spectroscopy analyses confirm the presence of ZnWO4 and Bi2WO6 as main phases in the composite photocatalyst. SEM and TEM observations reveal that the rice- and plate-like Bi2WO6 nanoparticles were either separate or attached to the surface of quasi-spherical ZnWO4 particles. A gradual increase in the Bi2WO6 content of the composite photocatalyst results in a monotonic shift of the absorption edge from ca. 355 nm to longer wavelengths up to ca. 450 nm. The photocatalytic performance of the ZnWO4/B

    DOI: 10.1016/j.apcata.2013.03.014

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  • Preparation and characterization of lotus ceramics with different pore sizes and their implication for the generation of microbubbles for CO2 sequestration application Reviewed

    Catalin Popa, Ken-ichi Katsumata, Toshihiro Isobe, Nobuhiro Matsushita, Akira Nakajima, Taisuke Kurata, Kiyoshi Okada

    Ceramics International   Vol. 39 ( No. 2 )   1443 - 1449   2013.2

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    DOI: 10.1016/j.ceramint.2012.07.087

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  • Capillary rise properties of porous mullite ceramics prepared by an extrusion method with various diameters of fiber pore formers Reviewed

    Catalin Popa, Yuki Okayasu, Ken-ichi Katsumata, Toshihiro Isobe, Nobuhiro Matsushita, Akira Nakajima, Taisuke Kurata, Kiyoshi Okada

    Journal of Materials Science   Vol. 48 ( No. 2 )   941 - 947   2013.2

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    DOI: 10.1007/s10853-012-6819-y

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  • Enhanced and Engineered d0 Ferromagnetism in Molecularly-Thin Zing Oxide Nanosheets

    Takaaki TANIGUCHI, Kazuhiro YAMAGUCHI, Ayako SHIGETA, Yuki MATSUDA, Shinya HAYAMI, Tetsuya SHIMIZU, Takeshi MATSUI, Teruo YAMAZAKI, Asami FUNATSU, Yukihiro MAKINOSE, Nobuhiro MATSUSHITA, Michio KOINUMA, Yasumichi MATSUMOTO

    Adv. Funct. Mater.   Vol. 2013   2013.2

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  • LSIパッケージ集積化電源用Znフェライト磁心プレーナパワーインダクタの有機インターポーザへの内蔵に関する検討

    小林 洸貴, 佐藤 史宏, 萩田 和洋, 武田 理恵, 曽根原 誠, 佐藤 敏郎, 松下伸広, 小林 和貴, 清水 浩, 藤井 朋治, 石田 光一, 桜井 貴康

    Journal of the Magnetics Society of Japan   Vol. 37 ( No. 4 )   2013

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    DOI: 10.3379/msjmag.1305R012

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  • Cell spreading on titanium dioxide film formed and modifiedwith aerosol beam and femtosecond laser

    Togo Shinonaga, Masahiro Tsukamoto, Akiko Nagai, Kimihiro Yamashita, Takao Hanawa, Nobuhiro Matsushita, Guoqiang Xie, Nobuyuki Abe

    Applied Surface Science   2013

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    DOI: 10.1016/j.apsusc.2013.10.090

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  • 溶液プロセスによるパワーインダクタ用軟磁性Zn-Co置換フェライト膜の作製

    渡辺哲朗, 勝又健一, 丑田公規, 岡田 清, 松下伸広, 萩田和洋, 曽根原誠, 佐藤敏郎

    2012.12

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  • LSIパッケージレベルパワーグリッド用CMOSスイッチDC-DCコンバータに向けたプレーナパワーインダクタの検討

    佐藤史宏, 荻田和洋, 小林洸貴, 渡辺哲朗, 杉本直樹, 曽根原誠, 佐藤敏郎, 松下伸広, 小林和貴, 清水浩, 中澤信司, 藤井朋治, 桜井貴康

    2012.12

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  • Effect of illuminated light wavelength on electric resistance of zinc oxide films prepared by spin-spray method

    Hajime Wagata, Naoki Ohashi, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita, Shuji Oishi, Katsuya Teshima

    Journal of Flux Growth   Vol. 7 ( 2 )   55-59   2012.10

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  • Formation of periodic microstructures on titanium dioxide film by femtosecond laser irradiation

    Togo Shinonaga, Masahiro Tsukamoto, Yuichiro Ito, Akiko Nagai, Kimihiro Yamashita, Takao Hanawa, Masanari Takahashi, Nobuhiro Matsushita, Xie Guoqiang, Nobuyuki Abe

    The Fourth International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials (ICCCI 2012)   2012.9

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  • Synthesis of Amphiphilic Brookite Nanoparticles with High Photocatalytic Performance for Wide Range of Application Reviewed

    Ken-ichi Katsumata, Yukiaki Ohno, Koji Tomita, Takaaki Taniguchi, Nobuhiro Matsushita, Kiyoshi Okada

    ACS Applied Materials & Interfaces   Vol. 4 ( 4 )   4846 - 4852   2012.8

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    DOI: 10.1021/am301183t

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  • CaTiO3 nanobricks prepared from anodized TiO2 nanotubes Reviewed

    Chun-Yi Chen, Kazunari Ozasa, Ken-ichi Katsumata, Mizuo Maeda, Kiyoshi Okada, Nobuhiro Matsushita

    Electrochemistry Communications   Vol. 22 ( 22 )   101 - 104   2012.8

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    DOI: 10.1016/j.elecom.2012.05.012

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  • フェライト微粒子凝集体の室温合成とミリングによる色変化

    杉野 弘幸, 西村 一寛, 松下伸広, 井上 光輝

    2012.8

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  • An aqueous solution process and subsequent UV treatment for highly transparent conductive ZnO films Reviewed

    Hajime Wagata, Naoki Ohashi, Ken-ichi Katsumata, Hiroyo Segawa, Yoshiki Wada, Hideki Yoshikawa, Shigenori Ueda, Kiyoshi Okada, Nobuhiro Matsushita

    Journal of Materials Chemistry   Vol. 22 ( 22 )   20706 - 20712   2012.7

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    DOI: 10.1039/c2jm33584k

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  • LSIパッケージ集積化電源用プレーナパワーインダクタのインターポーザ内蔵に関する検討

    小林 洸貴, 佐藤 史宏, 萩田 和洋, 武田 理恵, 曽根原 誠, 佐藤 敏郎, 松下伸広, 小林 和貴, 清水 浩, 藤井 朋治, 石田 光一, 桜井 貴康

    2012.6

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  • 溶液法で作製した高周波用フェライト膜と軟磁気特性

    松下伸広, 勝又 健一, 阿部 正紀, 岡田 清, 渡辺 哲朗, 丑田 公規

    2012.6

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  • Ce-surfactant Lamellar Assemblies with Strong UV/Visible Emission and Controlled Nanostructures

    Takaaki TANIGUCHI, Yukihiro KOMATSUBARA, Kiyoshi OKADA, Nobuhiro MATSUSHITA

    J. Mater. Chem.   Vol. 22   2012.6

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    DOI: 10.1039/c2jm33265e

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  • フェライトナノ粒子凝集体の合成とその特性

    西村一寛, 松下伸広

    東京工業大学応用セラミックス研究所共同利用研究報告書   2011   167   2012.6

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    J-GLOBAL

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  • Bioactive Titanium Oxide-Based Nanostructures Prepared by One-Step Hydrothermal Anodization Reviewed

    Chun-Yi Chen, Kazunari Ozasa, Ken-ichi Katsumata, Mizuo Maeda, Kiyoshi Okada, Nobuhiro Matsushita

    Journal of Physical Chemistry C   Vol. 116 ( 116 )   8054 - 8062   2012.4

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    DOI: 10.1021/jp210783w

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  • 医療技術における磁気応用研究の動向(5) : 生体内へのエネルギー・信号伝達の磁気応用技術

    山田 外史, 柿川 真紀子, 竹村 泰司, 松下伸広, 松木 英敏, 薮上 信

    2012.2

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  • NIR-excited NIR and Visible Luminescent Properties of Amphipathic YVO4: Er3+/Yb3+ Nanoparticles Reviewed

    Takaaki TANIGUCHI, Kohei SOGA, Kimikazu TOKUZEN, Katsuya TSUJIUCHI, Takuro KIDOKORO, Koji TOMITA, Ken-ichi KATSUMATA, Nobuhiro MATSUSHITA, Kiyoshi OKADA

    Journal of Materials Science   Vol. 47 ( No. 5 )   2241 - 2247   2012.2

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    DOI: 10.1007/s10853-011-6035-1

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  • Preparation of TiO2-Fullerene Composites and Their Photocatalytic Activity under Visible Light Reviewed

    Ken-ichi KATSUMATA, Nobuhiro Matsushita, Kiyoshi OKADA

    International Journal of Photoenergy   Vol. 2012 ( 2012 )   1 - 8   2012.2

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    DOI: 10.1155/2012/256096

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  • Detecting Ferrite Nanobeads for Sentinel Lymph Node Mapping with a Highly Sensitive Hall Differential Magnetic Field Sensor Reviewed

    M. ABE, T. UEDA, T. MASAKI, Y. KITAMOTO, N. MATSUSHITA, H. HANDA

    Journal of physics : conference series   Vol. 352   012015   2012.1

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    DOI: 10.1088/1742-6596/352/1/012015

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  • Fabrication of Planar Power Inductor for Embedded Passives in LSI Package for Hundreds Megahertz Switching Dc-Dc Buck Converter

    Hideyuki ITO, Asako TAKEUCHI, Shiny OKAZAKI, Hiroki KOBAYASHI, Yuichiro Sugawa, Akihiro TAKESHIMA, Makoto SONEHARA, Nobuhiro MATSUSHITA, Toshiro SATO

    IEEE Transactons on Magnetics   Vol. 47 ( No. 10 )   2011.10

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    DOI: 10.1109/TMAG.2011.2147288

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  • Pseudo-Cube Shaped Brookite (TiO2) Nanocrystals Synthesized by Oleate-Modified Hydrothermal Growth Method Reviewed

    Yukiaki Ohno, Koji Tomita, Yukihiro Komatsubara, Takaaki Taniguchi, Ken-ichi Katsumata, Nobuhiro Matsushita, Toshihiro Kogure, Kiyoshi Okada

    Crystal Growth & Design   Vol. 11 ( 11 )   4831 - 4836   2011.9

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    DOI: 10.1021/cg2006265

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  • Photocatalytic Activity and Related Surface Properties of Transparent ZnO Films Prepared by a Low-temperature Aqueous Route Reviewed

    Hajime Wagata, Ken-ichi Katsumata, Naoki Ohashi, Munetoshi Sakai, Akira Nakajima, Akira Fujishima, Kiyoshi Okada, Nobuhiro Matsushita

    Photochemistry and Photobiology   Vol. 87 ( No. 5 )   1009 - 1015   2011.9

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    DOI: 10.1111/j.1751-1097.2011.00964.x

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  • Preparation of TiO2 Thin Films Using Water-Soluble Titanium Complexes and Their Photo-induced Properties Reviewed

    Ken-ichi Katsumata, Yukiaki Ohno, Koji Tomita, Munetoshi Sakai, Akira Nakajima, Masato Kakihana, Akira Fujishima, Nobuhiro Matsushita, Kiyoshi Okada

    Photochemistry and Photobiology   Vol. 87 ( No. 2 )   988 - 994   2011.9

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  • Low-temperature Ammonothermal Synthesis of LaTaON2

    T. Watanabe, K. Tajima, JW Li, N. Matsushita, M. Yoshimura

    Chemistry Letters   Vol. 40 ( No. 10 )   2011.9

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    DOI: 10.1246/cl.2011.1101

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  • Tuning Growth Modes of Ceria-Based Nanocubes by a Hydrothermal Method Reviewed

    Takaaki Taniguchi, Ken-ichi Katsumata, Shingo Omata, Kiyoshi Okada, Nobuhiro Matsushita

    Crystal Growth & Design   Vol. 11 ( No. 9 )   3754 - 3760   2011.7

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    DOI: 10.1021/cg101585b

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  • The Effect of Citric Ion on the Spin-Sprayed ZnO Films: IR and XPS Study for the Organic Impurities Reviewed

    Hajime Wagata, Naoki Ohashi, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    Key Engineering Materials, Electroceramics in Japan XIV   ( 485 )   291 - 294   2011.7

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    DOI: 10.4028/www.scientific.net/KEM.485.291

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  • 環境メータのためのフェライトナノ粒子凝集体の合成

    西村一寛, 松下伸広

    東京工業大学応用セラミックス研究所共同利用研究報告書   2010   159 - 160   2011.6

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  • Transformation of Surface Morphology by Femtosecond Laser Irradiation for Improving Bioactivity of the Ti-based Bulk Metallic Glass Invited Reviewed

    Togo SHINONAGA, Masahiro TSUKAMOTO, Sayaka MARUYAMA, Nobuhiro MATSUSHITA, Takeshi WADA, Xinmin WANG, Hiroshi HONDA, Masayuki FUJITA, Nobuyuki ABE, Akihisa Inoue

    The Review of Laser Engineering   Vol. 39 ( No. 5 )   347 - 353   2011.5

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    DOI: 10.2184/lsj.39.347

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  • Control of Wetting on Ti-based Bulk Metallic Glass Surfaces by a Hydrothermal Method Reviewed

    Ken-ichi Katsumata, Takeshi Wada, Akihisa Inoue, Munetoshi Sakai, Akira Nakajima, Akira Fujishima, Nobuhiro Matsushita, Kiyoshi Okada

    Journal of Materials Science   Vol. 46 ( 46 )   3430 - 3435   2011.3

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    DOI: 10.1007/s10853-010-5245-2

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  • Fabrication of a Zn-ferrite thick film planar power inductor for DC-D converter LSI package Reviewed

    Shinya Okazaki, Asako Takeuchi, Akihiro Takeshima, Makoto Sonehara, Toshiro Sato, Nobuhiro Matsushita

    IEEJ Transactions on Fundamentals and Materials   131 ( 7 )   484 - 489   2011

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    DOI: 10.1541/ieejfms.131.484

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  • A proposal of recycling type spin-spray ferrite plating to attain low environmental load Reviewed

    Asako Takeuchi, Ken-Ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy   58 ( 9 )   560 - 565   2011

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    DOI: 10.2497/jjspm.58.560

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  • Improving the bioactivity of the Ti-based BMGs by microstructures formation with femtosecond laser

    Togo Shinonaga, Masahiro Tsukamoto, Tone Daisuke, Sayaka Maruyama, Nobuhiro Matsushita, Takeshi Wada, Xinmin Wang, Hiroshi Honda, Nobuyuki Abe

    Proceedings of the Visual-JW2010   2010.11

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  • Electrochemical behavior, microstructure and bioactivity of Ti-based metallic glasses

    Fengxiang Qin, Xinmin Wang, Guoqiang Xie, Kunsu Son, Takeshi Wada, Nobuhiro Matsushita, Masahiro Tsukamoto, Takao Hahawa, Akihisa Inoue

    Proceedings of the Visual-JW2010   2010.11

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  • Responses of osteoblast to surface modified bulk metallic glass

    Akiko Nagai, Kimihiro Yamashita, Sayaka Maruyama, Nobuhiro Matsushita, Kiyoshi Okada, Nobuyuki Abe, Masahiro Tsukamoto, Kunsu Son, Xinmin Wang, Guoqiang Xie, Akihisa Inoue

    Proceedings of the Visual-JW2010   2010.11

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  • Formation on bone-like hydroxyapatite on surface-modified bulk metallic glass using a hydrothermal-electrothermal method Reviewed

    N. Matsushita, N. Sugiyama, S. Maruyama, R. Ito, K. Katsumata, M. Yoshimura, M. Tsukamoto, X. Wang, T. Wada, A. Inoue, K. Okada

    Ceramic Transaction   Vol. 219 ( 219 )   23 - 28   2010.10

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  • Control of micro-structure and crystalline orientation of ZnO films on seed-free glass substrate by using spin-spray method Reviewed

    Hajime Wagata, Naoki Ohashi, Takaaki Taniguchi, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    Crystal Growth & Design   Vol. 10 ( 10 )   4968 - 4975   2010.10

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    DOI: 10.1021/cg1010693

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  • Spinel ferrite films by a novel solution process for high frequency applications

    A. K. Subramani, K. Kondo, M. Tada, M. Abe, M. Yoshimura, N. Matsushita

    MATERIALS CHEMISTRY AND PHYSICS   123 ( 1 )   16 - 19   2010.9

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    DOI: 10.1016/j.matchemphys.2010.02.031

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  • MICROSTRUCTURE FORMATION ON A TITANIUM-BASED BULK METALLIC GLASS PLATE BY FEMTOSECOND LASER IRRADIATION

    M. Tsukamoto, T. Shinonaga, N. Matsushita, X. Wang, T. Wada, N. Abe, K. Ewsuk, T. Kakeshita, S. Kirihara, K. Uematsu

    Characterization and Control of Interfaces for high quality advanced materials III   Vol. 219   2010.9

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    DOI: 10.1002/9780470917145.ch8

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  • Nanoscale Heterogeneities in CeO2-ZrO2 Nanocrystals Highlighted by UV-resonant Raman Spectroscopy Reviewed

    Takaaki TANIGUCHI, Tomoaki WATANABE, Satoshi ICHINOHE, Masahiro YOSHIMURA, Ken-ichi KATSUMATA, Kiyoshi OKADA, Nobuhiro MATSUSHITA

    Nanoscale   Vol. 2 ( 8 )   1426 - 1428   2010.8

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    DOI: 10.1039/c0nr00040j

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  • Single-Step Fabrication of ZnO Rod Arrays on a Nonseeded Glass Substrate by a Spin-Spray Technique at 90oC Reviewed

    Hajime Wagata, Naoki Ohashi, Takaaki Taniguchi, A.K. Subramani, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    Crystal Growth & Design   Vol. 10 ( 10 )   3502 - 3507   2010.8

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    DOI: 10.1021/cg100386c

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  • Femtosecond Laser Irradiation and Hydrothermal?electrochemical Treatment for Improving Bioactivity of the Ti-based Bulk Metallic Glass

    Togo Shinonaga, Masahiro Tsukamoto, Sayaka Maruyama, Nobuhiro Matsushita, Takeshi Wada, Xinmin Wang, Hiroshi Honda, Masayuki Fujita, Nobuyuki Abe

    CONGLES PROGRAM/ TECHNICAL DIGEST of LPM2010   2010.6

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  • フェライトナノ粒子凝集体の合成と環境メータとしての応用

    西村一寛, 松下伸広, 枦修一郎, 申光鎬

    東京工業大学応用セラミックス研究所共同利用研究報告書   2009   56   2010.6

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  • Synthesis of Amphipathic YVO4:Eu3+ Nanophosphors by Oleate-Modified Nucleation/Hydrothermal-Growth Process

    Takaaki Taniguchi, Tomoaki Watanabe, Ken-ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

    JOURNAL OF PHYSICAL CHEMISTRY C   114 ( 9 )   3763 - 3769   2010.3

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    DOI: 10.1021/jp908959t

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  • Fabrication of BaTiO3 Thin Films and Microdot Patterns by Halide-Free Nonaqueous Solution Route

    Hajime Wagata, Takaaki Taniguchi, Ruwan Gallage, A. K. Subramani, Naonori Sakamoto, Tomoaki Watanabe, Masahiro Yoshimura, Nobuhiro Matsushita

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   93 ( 2 )   381 - 386   2010.2

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    DOI: 10.1111/j.1551-2916.2009.03383.x

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  • Melt synthesis of Eu-doped oxide phosphors using arc-imaging furnace

    T. Ishigaki, N. Matsushita, K. Umetsu, K. Toda, M. Sato, M. Yoshimura

    Journal of the European Ceramic Society   Vol. 30 ( No. 2 )   2010.2

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    DOI: 10.1016/j.jeurceramsoc.2009.05.040

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  • Ferrite Plated Films Applicable in High Frequency Range

    Nobuhiro MATSUSHITA, Masanori ABE, Koichi KONDO, Shigeyoshi YOSHIDA, Toshiro SATO, Kiyoshi OKADA

    Journal of The Surface Finishing Society of Japan   61 ( 6 )   31 - 37   2010

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  • Microwave synthesis technique for long phosphorescence phosphor SrAl2O4:Eu2+, Dy3+ using carbon reduction

    T. Ishigaki, H. Mizushina, K. Umetsu, N. Matsushita, M. Yoshimura, K. Toda, M. Sato

    Materials science and engineering B   Vol. 173 ( No. 1-3 )   2010

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    DOI: 10.1016/j.mseb.2009.11.004

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  • High resistive ferrite films by a solution process for electromagnetic compatible (EMC) devices

    A. K. Subramani, K. Kondo, M. Tada, M. Abe, M. Yoshimura, N. Matsushita

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   321 ( 24 )   3979 - 3983   2009.12

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    DOI: 10.1016/j.jmmm.2009.07.036

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  • 集積化電源用フェライトメッキ膜プレーナインダクタの試作

    岡崎眞也, 竹内有沙子, 曽根原誠, 佐藤敏郎, 山沢清人, 三浦義正, 松下伸広

    2009.12

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  • Identifying Defects in Ceria-Based Nanocrystals by UV Resonance Raman Spectroscopy

    Takaaki Taniguchi, Tomoaki Watanabe, Naota Sugiyama, A. K. Subramani, Hajime Wagata, Nobuhiro Matsushita, Masahiro Yoshimura

    JOURNAL OF PHYSICAL CHEMISTRY C   113 ( 46 )   19789 - 19793   2009.11

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    DOI: 10.1021/jp9049457

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  • Formation and bioactivation of Zr-Al-Co bulk metallic glasses

    T. Wada, F. Fengxiang, X. Wang, M. Yoshimura, A. Inoue, N. Sugiyama, R. Ito, N. Matsushita

    Journal of Materials Research   Vol. 24 ( No. 9 )   2009.9

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    DOI: 10.1557/jmr.2009.0348

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  • Melt synthesis of oxide red phosphors View the MathML sourceLa2WO6:Eu3+

    T. Ishigaki, N. Matsushita, M. Yoshimura, K. Uematsu, K. Toda, M. Sato, G. Boulon, C. Dujardin, AM Jurdyc

    Physics Procedia   Vol. 2 ( No. 2 )   2009.9

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    DOI: 10.1016/j.phpro.2009.07.045

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  • Rational synthesis of a nanocrystalline calcium phosphate cement exhibiting rapid conversion to hydroxyapatite

    Ines S. Neira, Yury V. Kolen'ko, Oleg I. Lebedev, Gustaaf Van Tendeloo, Himadri S. Gupta, Nobuhiro Matsushita, Masahiro Yoshimura, Francisco Guitian

    MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS   29 ( 7 )   2124 - 2132   2009.8

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    DOI: 10.1016/j.msec.2009.04.011

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  • ソフト溶液プロセスによるセラミックスパターニングの直接形成-インクジェット反応法、インクジェット堆積法を中心に-

    松下伸広, ルワン・ガラゲ, 我田 元, 吉村昌弘

    成形加工   2009.8

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  • Enhancement of Corrosion Resistance of Titanium-Copper Based Metallic Glass by Methylsiloxane Coating

    Yasuto Hoshikawa, Eiichi Yasuda, Takashi Akatsu, Toru Onoda, Naota Sugiyama, Nobuhiro Matsushita, Takamasa Onoki, Masaru Akao, Yasuhiro Tanabe, Masahiro Yoshimura, Shengli Zhu, Xinmin Wang, Akihisa Inoue

    MATERIALS TRANSACTIONS   50 ( 6 )   1334 - 1339   2009.6

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    DOI: 10.2320/matertrans.ME200808

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  • Direct patterning of dense cerium oxide thin film by developed ink-jet deposition method at moderate temperatures

    R. Gallage, A. Matsuo, T. Fujiwara, T. Watanabe, N. Matsushita, M. Yoshimura

    THIN SOLID FILMS   517 ( 16 )   4515 - 4519   2009.6

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    DOI: 10.1016/j.tsf.2008.12.029

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  • Interface Structure between Ti-Based Bulk Metallic Glasses and Hydroxyapatite Ceramics Jointed by Hydrothermal Techniques

    Takamasa Onoki, Taisuke Higashi, Xinmin Wang, Shengli Zhu, Naota Sugiyama, Yasuto Hoshikawa, Masaru Akao, Nobuhiro Matsushita, Atsushi Nakahira, Eiichi Yasuda, Masahiro Yoshimura, Akihisa Inoue

    MATERIALS TRANSACTIONS   50 ( 6 )   1308 - 1312   2009.6

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    DOI: 10.2320/matertrans.ME200815

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  • 貴金属粒子が分散したフェライト複合微粒子・めっき膜の合成と磁気・電気・光学・医学応用とその相互作用

    西村一寛, 松下伸広, 枦修一郎, 申光鎬

    東京工業大学応用セラミックス研究所共同利用研究報告書   2008   80 - 81   2009.6

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  • Hydrothermal Synthesis of Monodisperse Ce0.5Zr0.5O2 Metastable Solid Solution Nanocrystals

    Takaaki Taniguchi, Tomoaki Watanabe, Nobuhiro Matsushita, Masahiro Yoshimura

    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY   2009 ( 14 )   2054 - 2057   2009.5

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    DOI: 10.1002/ejic.200801203

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  • Bioactive titanate nanomesh layer on the Ti-based bulk metallic glass by hydrothermal-electrochemical technique

    Naota Sugiyama, HaiYan Xu, Takamasa Onoki, Yasuto Hoshikawa, Tomoaki Watanabe, Nobuhiro Matsushita, Xinmin Wang, FengXiang Qin, Mikio Fukuhara, Masahiro Tsukamoto, Nobuyuki Abe, Yuichi Komizo, Akihisa Inoue, Masahiro Yoshimura

    ACTA BIOMATERIALIA   5 ( 4 )   1367 - 1373   2009.5

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    DOI: 10.1016/j.actbio.2008.10.014

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  • Lattice energy calculation for quantitatively-modeled Perovskite distortion

    Tadashi Ishigaki, Zoran S. Nikolic, Tomoaki Watanabe, Nobuhiro Matsushita, Masahiro Yoshimura

    SOLID STATE IONICS   180 ( 6-8 )   475 - 479   2009.5

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    DOI: 10.1016/j.ssi.2008.12.017

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  • Effects of growing integrated layer [GIL] formation on bonding behavior between hydroxyapatite ceramics and Ti-based bulk metallic glasses via hydrothermal hot-pressing

    Takamasa Onoki, Xinmin Wang, Shengli Zhu, Naota Sugiyama, Yasuto Hoshikawa, Masaru Akao, Nobuhiro Matsushita, Atsushi Nakahira, Eiichi Yasuda, Masahiro Yoshimura, Akihisa Inoue

    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS   161 ( 1-3 )   27 - 30   2009.4

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    DOI: 10.1016/j.mseb.2008.11.011

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  • Patterning of BaTiO3 by inkjet deposition using a precursor solution

    Hajime Wagata, Ruwan Gallage, Masahiro Yoshimura, Nobuhiro Matsushita

    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS   161 ( 1-3 )   146 - 150   2009.4

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    DOI: 10.1016/j.mseb.2009.03.005

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  • Hydrothermal Growth of Fatty Acid Stabilized Iron Oxide Nanocrystals

    Takaaki TANIGUCHI, Kazunori NAKAGAWA, Tomoaki WATANABE, Nobuhiro MATSUSHITA, Masahiro YOSHIMURA

    J. Phys. Chem.   Vol. C 2009 ( No. 113 )   2009.3

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    DOI: 10.1021/jp8062433

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  • Fabrication of transparent ceria films by spray deposition without post firing

    Ruwan Gallage, Atsushi Matsuo, Tomoaki Watanabe, Nobuhiro Matsushita, Masahiro Yoshimura

    JOURNAL OF ELECTROCERAMICS   22 ( 1-3 )   33 - 39   2009.2

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    DOI: 10.1007/s10832-008-9464-8

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  • Coupling of MnZn-ferrite films onto electronic components by a novel solution process for high frequency applications

    Subramani K. Ailoor, Takaaki Taniguchi, Koichi Kondo, Masaru Tada, Takashi Nakagawa, Masanori Abe, Masahiro Yoshimura, Nobuhiro Matsushita

    JOURNAL OF MATERIALS CHEMISTRY   19 ( 31 )   5510 - 5517   2009

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    DOI: 10.1039/b903717a

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  • Novel Growing Integration Layer [GIL]Method for the Joining/Bonding of Metalic and Ceramic Materials,and Its Application in Bulk Metallic Glassws for High Bio-Compatibilities

    Masahiro Yoshimura, Naota Sugiyama, HaiYan Xu, Nobuhiro Matsushita, Xinmin Wang, Takeshi Wada, Fenxing Qin, Akihisa Inoue, Masahiro Tsukamoto, Kazuhiro Nakata

    2008.12

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  • Aqueous route to size-controlled and doped organophilic ceria nanocrystals

    Takaaki Taniguchi, Tomoaki Watanabe, Naonori Sakamoto, Nobuhiro Matsushita, Masahiro Yoshimura

    CRYSTAL GROWTH & DESIGN   8 ( 10 )   3725 - 3730   2008.10

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    DOI: 10.1021/cg800363w

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  • Crystallization behavior of the eutectic glass in the C12A7-CaYAlO4 system

    Naonori Sakamoto, Kazunari Suda, Tomoaki Watanabe, Nobuhiro Matsushita, Masahiro Yoshimura

    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY   28 ( 12 )   2399 - 2404   2008.8

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    DOI: 10.1016/j.jeurceramsoc.2008.01.010

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  • On-site fabrication of crystalline cerium oxide films and patterns by ink-jet deposition method at moderate temperatures

    Ruwan Gallage, Atsushi Matsuo, Takeshi Fujiwara, Tomoaki Watanabe, Nobuhiro Matsushita, Masahiro Yoshimura

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   91 ( 7 )   2083 - 2087   2008.7

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    DOI: 10.1111/j.1551-2916.2008.02402.x

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  • Melt synthesis of oxide phosphors with K(2)NiF(4) structures: CaLa(1-x)Eu(x)GaO(4)

    Tadashi Ishigaki, Kenji Toda, Tomoaki Watanabe, Naonori Sakamoto, Nobuhiro Matsushita, Masahiro Yoshimura

    JOURNAL OF MATERIALS SCIENCE   43 ( 14 )   4749 - 4752   2008.7

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    DOI: 10.1007/s10853-008-2481-9

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  • Hundred-nanometer sized biomagnetic beads with large magnetization using ferrite nanoparticles grown by hydrothermal process

    Nobuhiro Matsushita, Kazunori Nakagawa, Takaaki Taniguchi, Hiroshi Handa, Masaru Tada, Masanori Abe, Masahiro Yoshimura

    JOURNAL OF APPLIED PHYSICS   103 ( 7 )   2008.4

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    DOI: 10.1063/1.2838015

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  • Rational hydrothermal route to monodisperse Hf1-xEUxO2-x/2 solid solution nanocrystals

    Takaaki Taniguchi, Naonori Sakamoto, Tomoaki Watanabe, Nobuhiro Matsushita, Masahiro Yoshimura

    JOURNAL OF PHYSICAL CHEMISTRY C   112 ( 13 )   4884 - 4891   2008.4

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    DOI: 10.1021/jp710673y

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  • NiZnCo ferrite films by spin spray technique: morphology and magnetic properties

    Ailoor K. Subramani, Nobuhiro Matsushita, Masaru Tada, Tomoaki Watanabe, Masanori Abe, Masahiro Yoshimura

    JOURNAL OF MATERIALS SCIENCE   43 ( 7 )   2372 - 2376   2008.4

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    DOI: 10.1007/s10853-007-2034-7

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  • Post-heat-treated spin-spray plated Mn(x)Zn(y)Fe(3-x-y)O(4) films exhibiting high resistivity and noise suppressing properties

    A. K. Subramani, N. Matsushita, T. Watanabe, K. Kondo, M. Tada, M. Abe, M. Yoshimura

    JOURNAL OF APPLIED PHYSICS   103 ( 7 )   2008.4

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    DOI: 10.1063/1.2832331

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  • Effect of Chemical Bonding in Hydroxyapatite Film Formation on Titanium by Aerosol Beam Process Reviewed

    Hidenori Terasaki, Yuichi Komizo, Nobuyuki Abe, Masahiro Tsukamoto, Masahiro Yoshimura, Tomoaki Watanabe, Nobuhiro Matsushita, Naota Sugiyama

    Smart Processing Technology   2   247 - 250   2008.3

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  • Spin-sprayed ferrite films with high resistivity and high-frequency magnetic loss for GHz conducted noise suppressors

    A. K. Subramani, N. Matsushita, T. Watanabe, M. Tada, M. Abe, K. Kondo, M. Yoshimura

    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS   148 ( 1-3 )   136 - 140   2008.2

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    DOI: 10.1016/j.mseb.2007.09.009

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  • Effect of Chemical Bonding in Hydroxyapatite Film formation on Titanium by Aerosol Beam Irradiation

    Hidenori Terasaki, Yuichi Komizo, Nobuyuki Abe, Masahiro Tsukamoto, Masahiro Yoshimura, Tomoaki Watanabe, Nobuhiro Matsushita

    2007.11

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  • A simple process for ferrite film preparation from one solution without using hazardous oxidizing agent

    A. K. Subramani, N. Matsushita, T. Watanabe, M. Tada, M. Abe, M. Yoshimura

    JOURNAL OF APPLIED PHYSICS   101 ( 9 )   2007.5

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    DOI: 10.1063/1.2709753

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  • Fabrication of Bioactive Ceramics Thin Film on Ti-based bulk alloys by using hydrothermal-electrochemical technique

    Naota Sugiyama, Hai Yan Xu, Tomoaki Watanabe, Nobuhiro Matsushita, Takamasa Onoki, Yasuto Hoshikawa, Xinmin Wang, Akihisa Inoue, Masahiro Tsukamoto, Nobuyuki Abe, Yuichi Komizo, Masahiro Yoshimura

    The 1st International Conference on Science and Technology for Advanced Ceramics(STAC) & The 2nd International Conference on Joining Technology for New Metallic Glasses and Inorganic Materials(JTMC)   2007.5

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  • Bioactive Surface Ceramics Formation on Bulk Alloys and Metallic Glasses by Oxidation of Their Components

    Masahiro Yoshimura, Naota Sugiyama, Hai-Yan Xu, Takamasa Onoki, Eiichi Yasuda, Tomoaki Watanabe, Nobuhiro Matsushita, Xingmin Wang, Mikio Fukuhara, Akihisa Inoue, Hiroya Abe, Masahiro Tsukamoto, Makio Naito

    2007.5

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  • GHz permeability of sprayed NiZn ferrite films

    O. Acher, M. Ledieu, M. Abe, M. Tada, N. Matsushita, M. Yoshimura, K. Kondo

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   310 ( 2 )   2532 - 2533   2007.3

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    DOI: 10.1016/j.jmmm.2006.11.140

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  • High-flux density and low-core losses attained for ferrite/permalloy composite core

    Nobuhiro Matsushita, Duksil Kim, Masanori Abe

    IEEE TRANSACTIONS ON MAGNETICS   42 ( 10 )   2824 - 2826   2006.10

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    DOI: 10.1109/TMAG.2006.879740

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  • Ni-Zn ferrite films synthesized from aqueous solution usable for sheet-type conducted noise suppressors in GHz range Reviewed

    N. Matsushita, K. Kondo, S. Yoshida, M. Tada, M. Yoshimura, M. Abe

    JOURNAL OF ELECTROCERAMICS   16 ( 4 )   557 - 560   2006.7

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    DOI: 10.1007/s10832-006-9918-9

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  • Conducted noise suppression up to GHz range by spin-sprayed Ni0.2ZnxFe2.8-xO4 (x=0.3, 0.6) films having different natural resonance frequencies

    K Kondo, T Chiba, H Ono, S Yoshida, Y Shimada, N Matsushita, M Abe

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   301 ( 1 )   107 - 111   2006.6

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    DOI: 10.1016/j.jmmm.2005.06.021

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  • CaTiO3 Film Formation on Ti and Ti-Alloy by Electrochemical Process for Hydroxyapatite Deposition

    Tomoaki WATANABE, Naota SUGIYAMA, Nobuhiro MATSUSHITA, Xinmin WANG, Akihisa INOUE, Masahiro TSUKAMOTO, Nobuyuki ABE, Yuichi KOMIZO, Takamasa ONOKI, Yasuhiri TANABE, Masahiro YOSHIMURA

    The Second International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materals, and Joining Technology for New Metallic Glasses and Inorganic Materials   2006.5

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  • Heating ability of magnetite nanobeads with various sizes for magnetic hyperthermia at 120 kHz, a noninvasive frequency

    K Okawa, M Sekine, M Maeda, M Tada, M Abe, N Matsushita, K Nishio, H Handa

    JOURNAL OF APPLIED PHYSICS   99 ( 8 )   2006.4

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    DOI: 10.1063/1.2173208

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  • Fe3O4+delta films prepared by "one-liquid" spin spray ferrite plating for gigahertz-range noise suppressors

    J Miyasaka, M Tada, M Abe, N Matsushita

    JOURNAL OF APPLIED PHYSICS   99 ( 8 )   2006.4

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    DOI: 10.1063/1.2177394

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  • 磁性ビーズのバイオ・環境技術への応用展開 (分担)

    松下伸広, 半田宏, 阿部正紀, 野田紘憙

    Vol.   2006.4

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  • Phenomenological theory of permeability in films having no in-plane magnetic anisotropy: Application to spin-sprayed ferrite films

    M. Abe, M. Tada, N. Matsushita, Y. Shimada

    JOURNAL OF APPLIED PHYSICS   99   08M907   2006

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  • フェライトめっき膜を用いたGHz帯域の電磁ノイズ抑制体

    松下伸広, 阿部正紀

    セラミックス   41 ( 1 )   20 - 24   2006

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  • FMR study on spin-sprayed Ni-Zn-Co ferrite films with. high permeability usable for GHz noise suppressors

    K Kondo, T Chiba, S Yoshida, S Okamoto, Y Shimada, N Matsushita, M Abe

    IEEE TRANSACTIONS ON MAGNETICS   41 ( 10 )   3463 - 3465   2005.10

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    DOI: 10.1109/TMAG.2005.854884

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  • Functionalization of micro-Hall effect sensors for biomedical applications utilizing superparamagnetic beads

    A Lapicki, H Sanbonsugi, T Yamamura, N Matsushita, M Abe, H Narimatsu, H Handa, A Sandhu

    IEEE TRANSACTIONS ON MAGNETICS   41 ( 10 )   4134 - 4136   2005.10

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    DOI: 10.1109/TMAG.2005.855341

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  • Styrene-coated iron nanobeads for medical use

    CS Kuroda, M Maeda, H Nishibiraki, N Matsushita, H Handa, M Abe

    IEEE TRANSACTIONS ON MAGNETICS   41 ( 10 )   4117 - 4119   2005.10

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    DOI: 10.1109/TMAG.2005.855336

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  • Expediting magnetic separation using Ni wires, applicable for robot-manipulated bio-screening systems

    R Shimazu, M Tada, N Matsushita, H Handa, M Abe

    IEEE TRANSACTIONS ON MAGNETICS   41 ( 10 )   4143 - 4145   2005.10

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    DOI: 10.1109/TMAG.2005.855342

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  • Crystallite size dependence of natural resonance frequency for spin-sprayed Fe3O4/gamma-Fe2O3 films highly permeable up to gigahertz range

    M Tada, T Abe, J Miyasaka, N Matsushita, M Abe

    JOURNAL OF APPLIED PHYSICS   97 ( 10 )   109   2005.5

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    DOI: 10.1063/1.1862096

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  • Preparation of medical magnetic nanobeads with ferrite particles encapsulated in a polyglycidyl methacrylate (GMA) for bioscreening

    H Nishibiraki, CS Kuroda, M Maeda, N Matsushita, M Abe, H Handa

    JOURNAL OF APPLIED PHYSICS   97 ( 10 )   919   2005.5

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    DOI: 10.1016/1.1861272

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  • Highly resistive Mn-Zn ferrite films prepared from aqueous solution for GHz conducted noise suppressors

    N Matsushita, T Abe, K Kondo, S Yoshida, M Abe

    JOURNAL OF APPLIED PHYSICS   97 ( 10 )   106   2005.5

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    DOI: 10.1063/1.1855591

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  • RF-integrated noise suppressor using spin-sprayed ferrite films Reviewed

    KH Kim, M. Yamaguchi, N. Matsushita, M. Abe

    Journal of magnetism and magnetic materials   Vol. 290   1363 - 1366   2005.4

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    DOI: 10.1016/j.jmmm.2004.11.438

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  • GHz conducted noise suppression by NiZn ferrite films plated onto polyimide sheets Reviewed

    K Kondo, T Chiba, H Ono, S Yoshida, Y Shimada, N Matsushita, M Abe

    NINTH INTERNATIONAL CONFERENCE ON FERRITES (ICF-9)   659 - 663   2005

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  • Spin-Sprayed Ferrite Films Highly Permeable in the GHz Range, with Excellent Heat Resistance

    KONDO K., NUMATA Y., CHIBA T., YAMADA S., YOSHIDA S., SHIMADA Y., MATSUSHITA N., ABE M.

    Journal of the Magnetics Society of Japan   5 ( 4 )   161 - 164   2005

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    Previously we revealed that spin-sprayed ferrite films are usable for GHz-range noise suppressors. For actual use, the films must retain excellent characteristics after the reflow soldering process. In this study, we investigated how changing the compositions of films influences their electric resistivity and the noise suppression effects obtained after annealing at 260° C. We plated 3-μm-thick ferrite films #1 (Ni0.2Zn0.1Fe2.7O4) and #2 (Ni0.4Zn0.3Fe2.3O4) onto polyimide sheets. The resistivity of film #1 decreased markedly, from 4 × 102 Ω cm to 1 × 100 Ω cm as a result of the annealing. On the other hand, film #2 exhibited a smaller decrease, from 6 × 104Ω cmto2 × 104 Ω cm. The reflection parameter S11 and transmission loss Δ Ploss measured on a microstrip line for film #1, especially below 1 GHz, were increased by the annealing. This is unfavourable for use of film #1 in lowpass filters that are required to absorb noises only in the GHz range. On the other hand, S11and Δ Ploss for film #2 were not significantly affected by the annealing. This film exhibited Δ Ploss of 40 ‰ at 10GHz.Moreover, the value of S11for the film below 10 GHz was sufficiently weak, less than -12dB.Thus, we succeeded in fabricating aGHz-rangenoise suppressor, with excellent heat resistance.

    DOI: 10.3379/tmjpn2001.5.161

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  • Novel Type of Conducted Noise Suppressor in GHz Range Using Ferrite-plated Film

    Nobuhiro Matsushita, Masanori Abe, Koichi Kondo, Shigeyoshi Yoshida

    The transactions of the Institute of Electrical Engineers of Japan.A   125 ( 1 )   22 - 24   2005

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    DOI: 10.1541/ieejfms.125.22

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  • Novel Medical Ferrite Nanobeads with Bioactive Molecules Immobilized Strongly onto the Surfaces Reviewed

    Masanori Abe, Nobuhiro Matsushita, Masaru Tada, Nobuyuki Gokon, Kosuke Nishio, Hiroshi Handa

    Material Research Society Symposium, San francisco, U.S.A., March 28-April 1, 2005.   2005

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  • Ferromagnetic Thin Film Noise Suppressor Integrated on to RF Transmission Lines (Invited) Reviewed

    M. Yamaguchi, K. Kim, N. Matsushita, A. Abe

    9th International Conference on Ferrites (ICF9)   ICF-CA-1-2004   2004

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  • Fe/ferrite Composite Magnetic Cores Far Exceeding Snoek’s Limit Fabricated by Simplified Ferrite Plating in Open Air

    N. Matsushita, S. Hatanaka, M. Abe

    IEEE Transactions on Magnetics   Vol. 40 ( No. 4 )   2004

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    DOI: 10.1109/TMAG.2004.830167

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  • 「バスタフェリックス」~フェライトめっき薄膜を用いたGHz伝導ノイズ抑制体

    近藤幸一, 千葉龍矢, 小野祐司, 吉田栄吉, 松下伸広, 阿部正紀

    日本応用磁気学会誌   2004

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  • Study on initial permeability of Ni-Zn ferrite films prepared by the spin spray method

    Yutaka Shimada, Nobuhiro Matsushita, Masanori Abe, Koichi Kondo, T. Chiba, Shigeyoshi Yoshida

    J. Magn. Megn. Mater.   Vol. 278   2004

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  • The electric and dielectric properties of the ZnNi-ferrite plated, NiFe microspheres synthesized from aqueous solution

    CM Fu, CY Hsu, YC Chao, DS Kim, N Matsushita, M Abe

    IEEE TRANSACTIONS ON MAGNETICS   39 ( 5 )   3136 - 3138   2003.9

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    DOI: 10.1109/TMAG.2003.816030

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  • Magnetic cores usable in gigahertz range: Permalloy/Ni-Zn ferrite microcomposite made by low-temperature wet process

    D Kim, M Ohnishi, N Matsushita, M Abe

    IEEE TRANSACTIONS ON MAGNETICS   39 ( 5 )   3181 - 3183   2003.9

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    DOI: 10.1109/TMAG.2003.816050

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  • Ferromagnetic resonance study on magnetic homogeneity in spin-sprayed NiZn ferrite films highly permeable at gigahertz frequencies

    M Abe, AI Shames, N Matsushita, Y Shimada

    IEEE TRANSACTIONS ON MAGNETICS   39 ( 5 )   3142 - 3144   2003.9

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    DOI: 10.1109/TMAG.2003.816036

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  • Applications of Magnetic Thin Film to Integrated EM Field Shielding and In-Line Noise Suppression (invited) Invited Reviewed

    M. Yamaguchi, K. H. Kim, S. Ikeda, K. I. Arai, Y.Shimada, N.Matsushita, M.Abe

    2003 IEEE International Symposium on EMC   2   931 - 934   2003.5

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    DOI: 10.1109/ICSMC2.2003.1429063

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  • Method for synthesizing ferrite nanoparticles similar to 30 nm in diameter on neutral pH condition for biomedical applications

    M Tada, S Hatanaka, H Sanbonsugi, N Matsushita, M Abe

    JOURNAL OF APPLIED PHYSICS   93 ( 10 )   7566 - 7568   2003.5

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    DOI: 10.1063/1.1558676

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  • High-frequency transport properties of spin-spray plated Ni-Zn ferrite thin films

    CM Fu, HS Hsu, YC Chao, N Matsushita, M Abe

    JOURNAL OF APPLIED PHYSICS   93 ( 10 )   7127 - 7129   2003.5

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    DOI: 10.1063/1.1558197

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  • High rate deposition (&gt; 60 NM/MIN) of highly permeable Ni-Zn ferrite films from aqueous solutions

    N Matsushita, T Nakamura, M Abe

    MAGNETIC MATERIALS, PROCESSES, AND DEVICES VII AND ELECTRODEPOSITION OF ALLOYS, PROCEEDINGS   2002 ( 27 )   554 - 560   2003

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  • Microwave and Nano-biomagnetic Applications of Ferrite Thin Films and Fine Particles Prepared from an Aqueous Solution

    27 ( 6 )   721 - 729   2003

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  • Direct immobilization of fluorescent dyes onto ferrite nanoparticles during their synthesis from aqueous solution

    S. Hatanaka, N. Matsushita, M. Abe, K. Nishimura, M. Hasegawa, H. Handa

    J. Appl. Phys.   93 ( 10,Pt.2 )   7569 - 7570   2003

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  • RF noise suppression on thin-film coplanar transmission line by electroplated ferrite magnetic films Reviewed

    Ki Hyeon Kim, M. Yamaguchi, N. Matsushita, M. Abe, K. I. Arai

    Intermag 2003 - Program of the 2003 IEEE International Magnetics Conference   2003

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    DOI: 10.1109/INTMAG.2003.1230916

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  • Cole-cole impedance analysis on spin sprayed Ni-Zn-Co ferrite films exhibiting strong magnetic loss in GHz range

    Koichi Kondo, Shinsuke Ando, Tatsuya Chiba, Shigeyoshi Yoshida, Yutaka Shimada, Tatsuro Nakamura, Nobuhiro Matsushita, Masanori Abe

    Digests of the Intermag Conference   2003

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  • GHz Conducted Noise Suppressors Using Ferrite Films Plated Directly on Printed Circuit Board and Polyimide Sheet

    MATSUSHITA N., KONDO K., ONO H., YOSHIDA S., ABE M.

    Journal of the Magnetics Society of Japan   3 ( 4 )   129 - 132   2003

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    Two types of conducted noise suppressors usable in a GHz range were fabricated using Ni-Zn ferrite films deposited from aqueous solutions. One is a direct-deposition type, in which Ni-Zn ferrite films are deposited directly on a microstrip line on an epoxy printed circuit board (PCB). The other is a sheet-type, in which the surfaces of Ni-Zn ferrite films deposited onto the polyimide sheet are in contact with the microstrip line. The direct-deposition type, using Ni-Zn ferrite film 3μm thick, exhibited a strong transmission loss of 40 to 70% at 1.5-10 GHz, which far exceeds that obtained for commercial composite sheet type of noise suppressors (50μm thick), in which fine ferromagnetic flakes are dispersed in a polymer matrix. The sheet type suppressor using Ni-Zn ferrite film exhibited better transmission loss and reflection loss than those of composite sheet type of noise suppressor, though the ferrite film 5 μm thick was much thinner than composite sheet 50 μm thick.

    DOI: 10.3379/tmjpn2001.3.129

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  • 水溶液中で作製したフェライト薄膜・超微粒子のマイクロ波/ナノバイオ応用

    阿部正紀, 松下伸広

    日本応用磁気学会   27 ( 6 )   721 - 729   2003

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  • Applications of Spin Sprayed Ferrite Films on Coplanar Transmission Line for RF Noise Suppression

    KIM Ki Hyeon, YAMAGUCHI Masahiro, ARAI Ken-Ichi, MATSUSHITA Nobuhiro, ABE Masanori

    Journal of the Magnetics Society of Japan   3 ( 4 )   133 - 136   2003

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    The RF electromagnetic noise attenuation on coplanar transmission line was investigated using the newly The RF electromagnetic noise attenuation on coplanar transmission line was investigated using the newly developed spin sprayed Ni-Zn(-Co) soft ferrite films with high resistivity. The RF noise suppressor was composed of magnetic film/polyimide/Cu coplanar transmission line/seed layer on glass substrate. The coplanar transmission line with a characteristic impedance of 50 Ω had a 50 μm-wide and 3 μm-thick signal line. The power loss of the coplanar transmission line with Ni-Zn(-Co) ferrites using insulating layer between the transmission line and magnetic film was smaller than that of CoNbZr films at GHz range. It is due to the high resistivity (517×102Ωcm-240×103Ωcm) of the ferrite films in comparison with that of the metallic magnetic CoNbZr film (120 μΩcm). The power loss of the coplanar transmission line using the ferrite films without insulating layer was compared with that of CoNbZr with a 7.5-μm-thick insulating layer. The power loss of the ferrite films without insulating layer was as large as that of the CoNbZr film with insulating layer over 1 GHz.

    DOI: 10.3379/tmjpn2001.3.133

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  • Ni-Zn Ferrite Films Exhibiting Magnetic Resonance Frequency Beyond 1GHz.

    Matsushita N., Chong C. P., Mizutani T., Abe M.

    Journal of the Magnetics Society of Japan   26 ( 4 )   475 - 478   2002

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    Ni-Zn ferrite films 0.2-1.2 μm in thickness were prepared by spraying a reaction solution of FeCl2(+FeCl3)+NiCl2+ZnCl2 (pH = 6.95) and an oxidizing solution of NaNO2 + CH3COONH4 (+NH3) simultaneously onto spinning glass substrates at a substrate temperature of 90°C. Films with a thickness of 0.48 μm deposited by the conventional spin-spray method using only Fe2+ as iron ions exhibited a high permeability μ' of 42 and a high magnetic resonance frequency fr of 650 MHz. This was 5 times as high as the value for Ni-Zn ferrite bulk. Film plated by adding NH3 to an oxidizing solution and film deposited by using a mixture of Fe3+(10%) and Fe2+(90%) as iron ions exhibited higher fr values of 900 MHz and 1.2 GHz, respectively. Since not only the real part μ' but also the imaginary part μ'' had large values of about 30 at 1 GHz, the films prepared in this study will be applicable to rf inductors as well as wave absorbers for suppressing EMI in the quasi-microwave range exceeding 1 GHz.

    DOI: 10.3379/jmsjmag.26.475

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  • Aqueous colloids with magnetite ultrafine particles suspended without using surfactants

    Shinji Hatanaka, Nobuhiro Matsushita, Masanori Abe

    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy   49 ( 8 )   706 - 709   2002

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    DOI: 10.2497/jjspm.49.706

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  • Perpendicular magnetic recording media using hexagonal ferrite thin films deposited on Pt underlayers and interlayers Reviewed

    S Nakagawa, N Matsushita, M Naoe

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   235 ( 1-3 )   337 - 341   2001.10

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  • Synthesis of ultra fine particles utilizing ferrite plating at 5-25℃

    NISHIMURA K, MIURA T, MATSUSHITA N, ABE M

    25   2001.9

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  • BaM/Pt multilayered films with fine grains and large perpendicular magnetic anisotropy for high density recording media

    N Matsushita, J Feng, N Funabashi, S Nakagawa, M Naoe

    JOURNAL OF APPLIED PHYSICS   89 ( 11 )   6837 - 6839   2001.6

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  • Decreasing the Grain Size of BaM Ferrite Films by Improving Pt Under Layers

    FUNABASHI N., FENG J., MATSUSHITA N., NAKAGAWA S., NAOE M.

    Journal of the Magnetics Society of Japan   25 ( 4-2 )   547 - 550   2001

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    Magnetoplumbite-type BaM ferrite films deposited on Pt under layers have a large perpendicular anisotropy which is enough for the contact type of perpendicular magnetic recording media. Addition of Ta proved thoroughly effective in attaining smaller grain size in BaM ferrite films. By adding 1 at.% of Ta into Pt under layers, we decreased the grain size of those Pt under layers. BaM ferrite films with smaller grain size have higher perpendicular coercivity (3.5 kOe) and greater squareness (0.69). Lower noise level and higher recording density were obtained through this improvement.

    DOI: 10.3379/jmsjmag.25.547

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  • Increase of coercivity and squareness ratio of Ba ferrite thin films by adding SiO2 and substituting Al for Fe

    J Feng, N Funabashi, N Matsushita, S Nakagawa, M Naoe

    IEEE TRANSACTIONS ON MAGNETICS   36 ( 5 )   2930 - 2932   2000.9

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  • Effects of initial layer surface roughness on GMR performance of Si/Cu/NiFe/Cu/Co/Cu/NiFe dual spin-valves for MRAM

    S Bae, N Matsushita, S Zurn, L Sheppard, EJ Torok, JH Judy

    IEEE TRANSACTIONS ON MAGNETICS   36 ( 5 )   2850 - 2852   2000.9

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  • Effects of pumping time on GMR and coercivity of RF-sputtered MRAM dual spin-valves

    S Bae, N Matsushita, S Zurn, L Sheppard, EJ Torok, JH Judy

    IEEE TRANSACTIONS ON MAGNETICS   36 ( 5 )   2853 - 2856   2000.9

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    DOI: 10.1109/20.908607

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  • High Coercivity and Large Squareness of Ba Ferrite Films by Adding SiO2 and Substituting Al for Fe, Ferrites

    N. FUANBASHI J. FENG, N. MATSUSHITA, S, NAKAGAWA M. NAOE

    Proceedings of 8th Inter. Conf. Ferrites(ICF8)   1035 - 1037   2000

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  • Compensation for the Demagnetizing Field in Remanence Measurements of Perpendicular Magnetic Recording Films

    FENG J., MATSUSHITA N., NAKAGAWA S., NAOE M.

    Journal of the Magnetics Society of Japan   24 ( 4-2 )   251 - 254   2000

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    Remanence measurements are very useful for estimating the characteristics of intergranular magnetic interactions in recording layers. However, it is necessary to compensate for the demagnetizing field in remanence measurements of perpendicular magnetic recording films. In this study, a new method of compensating for the demagnetizing field is proposed and an effective reverse field Heff is used to evaluate the dc demagnetization measurements, isothermal remanent magnetization measurements, and ΔM for perpendicular magnetic recording films.

    DOI: 10.3379/jmsjmag.24.251

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  • Ultra-high Density Recording Characteristics of As-deposited Ferrite Thin Film Disks without Post-annealing Process and Protective Layers

    S. NAKAGAWA, N. MATSUSHITA, M. NAOE

    Ferrites: Proceedings of 8th Inter. Conf. Ferrites(ICF8)   1027 - 1031   2000

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  • Ferrite-Plated CoxFe3-xO4 Insulation Layers for Mn-Zn Ferrite Cores, Ferrites

    M. SAKAI, Y, NAKAYAMA N. MATSUSHITA, Y, KITAMOTO M. ABE

    Proceedings of 8th Inter. Conf. Ferrites(ICF8)   657 - 659   2000

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  • Temperature (25-80℃ Dependence of Conditions for Synthesizing Magnetite Films by Ferrite Plating)

    K. NISHIMURA, Y, KOHARA N. MATSUSHITA, Y, KITAMOTO M. ABE

    Proceedings of 8th Inter. Conf. Ferrites(ICF8)   654 - 656   2000

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  • "Room Temperature Film Syntheses of Spinel Ferrites (Fe,M)_3O_4, M=Fe,Co,Ni,and Zn) from Aqueous Solution" Ferrites

    NISHIMURA K.

    Proc. 8th Int. Conf. Ferrites (Kyoto and Tokyo   615   615 - 617   2000

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  • Ferrite Plating of Styrene-Glycidyl Methiacrylate Laetx Particles for Bioseparation and DNA Diagnosis

    M. SAKAI, N. MATSUSHITA, Y, KITAMOTO, H. KAWAGUCHI H, HANDA M. ABE

    Ferrites: Proceedings of 8th Inter. Conf. Ferrites(ICF8)   111 - 113   2000

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  • Extremely Thin Barium Ferrite Layers with Excellent C-Axis Orientation and High Coercivity

    N. Matsushita, S. Nakagawa, M. Naoe

    Ferrites: Proceedings of 8th Inter. Conf. Ferrites(ICF8)   1041 - 1043   2000

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  • Preparation of Hexaferrite Thin Films by Chelation Ferrite Plating with Post Deposition Annealing

    N. Matsushita, M. Ohnishi, S. Miyazaki, Y. Kitamoto, M. Abe

    Ferrites: Proceedings of 8th Inter. Conf. Ferrites(ICF8)   660 - 662   2000

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  • Magnetic characteristics of (La,Sr)MnO3 films deposited by facing target sputtering system

    Tatsuo Namikawa, Shigeki Nakagawa, Kumiko Kaneta, Nobuhiro Matsushita, Masahiko Naoe

    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy   47 ( 2 )   175 - 178   2000

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Funtai Funmatsu Yakin Kyokai  

    DOI: 10.2497/jjspm.47.175

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  • High Frequency (10MHz-3GHz) Permeability of (Ni, Zn, Fe) _3O_4 Films Prepared by Ferrite Plating at 90℃

    KURUMA D.

    Proceedings of The Eighth International Conference on Ferrites (ICF8), Kyoto and Tokyo, 2000, Japan Society of Powder and Powder Metallurgy   503 - 506   2000

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  • Low Transition Noise Level of Co-Fe Ferrite with Pt Interlayer, Ferrites

    S. SAITO T, MURAKOSO N. MATSUSHITA, S, NAKAGAWA M. NAOE

    Proceedings of 8th Inter. Conf. Ferrites(ICF8)   1076 - 1078   2000

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  • BaM/Pt and BaM/Pt-Ta Bilayer Disks for Perpendicular Magnetic Recording

    J. FENG, N. FUANBASHI N. MATSUSHITA, S, NAKAGAWA M. NAOE

    Ferrite, Proceedings of 8th Inter. Conf. Ferrites(ICF8)   1038 - 1040   2000

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  • Deposition of C-axis oriented BaM ferrite layers with low surface roughness on textured underlayers

    M Naoe, N Matsushita, K Watanabe, M Ichinose, S Nakagawa

    IEEE TRANSACTIONS ON MAGNETICS   35 ( 5 )   3016 - 3018   1999.9

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  • Al substituted Ba ferrite films with high coercivity and excellent squareness for low noise perpendicular recording layer

    J Feng, N Matsushita, K Watanabe, S Nakagawa, M Naoe

    JOURNAL OF APPLIED PHYSICS   85 ( 8 )   6139 - 6141   1999.4

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    DOI: 10.1063/1.370022

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  • Co-Zn ferrite films prepared by facing targets sputtering system for longitudinal recording layer

    N Matsushita, M Ichinose, S Nakagawa, M Naoe

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   193 ( 1-3 )   68 - 70   1999.3

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    DOI: 10.1016/S0304-8853(98)00404-1

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  • Effects of Al substitution for Fe in Ba ferrite thin films

    J Feng, N Matsushita, T Murakoso, S Nakagawa, M Naoe

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   193 ( 1-3 )   152 - 154   1999.3

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    DOI: 10.1016/S0304-8853(98)00421-1

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  • Relationship between coercivity and deposition conditions of Ba ferrite films prepared by facing targets sputtering apparatus

    N Matsushita, J Feng, T Siosawa, S Nakagawa, M Naoe

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   193 ( 1-3 )   121 - 123   1999.3

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    DOI: 10.1016/S0304-8853(98)00414-4

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  • Preparation of Ba Ferrite Films Using Pt and Au Underlayers.

    Ichinose M., Murakoso T., Matsushita N., Nakagawa S., Naoe M.

    Journal of the Magnetics Society of Japan   23 ( 4-2 )   1205 - 1208   1999

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    Ba ferrite films with excellent c-axis orientation were deposited on Au(111) and Pt(111) underlayers at substrate temperatures Ts higher than 500°C. C-axis orientation was also achieved by depositing the films at Ts in the range from 300°C to 400°C and then annealing in air. The specimen films exhibited low perpendicular coercivity in the range from 0.5 to 0.8 kOe.<BR>The surface of as-deposited BaM/Au film looked rough, and the in-plane coercivity Hc// was high. For as-deposited BaM/Pt film, the average center-line roughness Ra was as small as about 1.7 nm, and the perpendicular and in-plane coercivity were 2.5 kOe and 0.3 kOe, respectively. These results suggested that it might be possible to use BaM/Pt for a perpendicular magnetic recording layers.

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  • Annealing effect of magnetic characteristics of (La,Sr)MnO/sub 3/ sputtered films

    T. Namikawa, K. Kaneta, N. Matsushita, S. Nakagawa, M. Naoe

    IEEE International Magnetics Conference   HA11 - HA11   1999

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    DOI: 10.1109/intmag.1999.837976

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  • Magnetic Characteristics of Al-substituted BaM Ferrite Films.

    Feng J., Watanabe K., Matsushita N., Nakagawa S., Naoe M.

    Journal of the Magnetics Society of Japan   23 ( 4-2 )   1213 - 1216   1999

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    Al-substituted Ba ferrite (Al-BaM) films with a composition of BaAlxFe12-xO19 (Al content x = 0,1,2) were deposited on SiOx/Si wafers with Pt seed layers. A post-annealing process and high substrate temperature Ts are necessary to crystallize the films. With an increase of the Al content x in Al-BaM ferrite films, the saturation magnetization 4πMs decreased, while the perpendicular coercivity Hc⊥ increased, reaching over 3.3 kOe. The perpendicular squareness ratio S was increased to about 0.9 by substitution of Al for Fe. The Al-BaM ferrite films with suitable Hc⊥ and large S prepared in this study may be applicable as perpendicular magnetic recording layers with low noise levels.

    DOI: 10.3379/jmsjmag.23.1213

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  • Plasma diagnosis and low-substrate-temperature deposition of Ba ferrite films in a damage-free sputtering apparatus with mixed gases

    Nobuhiro Matsushita, Kenji Noma, Shigeki Nakagawa, Masahiko Naoe

    Vacuum   51 ( 4 )   543 - 548   1998.12

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    DOI: 10.1016/s0042-207x(98)00245-0

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  • Study of Ferrite Film Preparation by Facing Targets Sputtering System and Application for Magnetic Disks

    NOBUHIRO MATSUSHITA

    1998.11

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  • Study of ferrite film preparation by facing targets sputtering system and application for magnetic disks

    NOBUHIRO MATSUSHITA

    1998.11

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  • Preparation and characteristics of Co-Zn ferrite rigid disks without protective layers for high density recording

    N Matsushita, M Ichinose, S Nakagawa, M Naoe

    IEEE TRANSACTIONS ON MAGNETICS   34 ( 4 )   1639 - 1641   1998.7

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    DOI: 10.1109/20.706641

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  • A Ba Ferrite Disk Deposited at Low Temperature and Its Read/Write Characteristics

    MATSUSHITA N., FENG J., SIOSAWA T., WATANABE K., ICHINOSE M., NAKAGAWA S., NAOE M.

    Journal of the Magnetics Society of Japan   22 ( 4-2 )   229 - 232   1998

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    Magnetoplumbite-type Ba ferrite (BaM) layers were deposited on ZnO (002) and Pt (111) underlayers by using a facing-targets sputtering apparatus in a gas mixture of Ar, Xe, and O2 at various substrate temperatures Ts. A Ba ferrite layer as-deposited on a ZnO underlayer at Ts values above 475°C and one as-deposited on a Pt (mmm) under-layer at Ts values above 500°C revealed clear c-axis oientation. The saturation magnetization 4πMs was 5.1 kG and 4.0 kG for ZnO and Pt underlayers, respectively. Both underlayers exhibited high perpendicular coercivity Hc⊥ and low in-plane coercivity Hc// of about 2.4 and 0.2 kOe, respectively. A Ba ferrite layer deposited at a relatively low Ts of 300°C and annealed at 800°C in air also revealed excellent c-axis orientation and exhibited a relatively low perpendicular coercivity Hc⊥ of 0.6 kOe. A clear di-pulse was observed for the isolated wave form of a BaM/Pt film as-deposited at Ts of 600°C owing to the perfect perpendicular magnetization orientation, and a relatively high linear recording density D50 of 123 kFRPI was achieved.

    DOI: 10.3379/jmsjmag.22.229

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  • Be Ferrite Films for Perpendicular Recording Layer with High Coercivity and Large Squareness

    Matsuda N., Feng J., Watanabe K., Murakoso T., Nakagawa S., Naoe M.

    Journal of the Magnetics Society of Japan   22 ( S3 )   27 - 31   1998

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    In the first half of this work, a magnetoplumbite-type of Ba ferrite (BaM) layers were deposited from BaFe11O19-y targets and BaFe13O19-y ones on a ZnO(001) underlayer in a gas mixture of Ar, Xe, and O2 using facing targets sputtering apparatus. It was clarified that a stoichiometric composition is necessary for preparing Ba ferrite films with large saturation magnetization 4πMs and excellent perpendicular anisotropy. Ba ferrite films deposited at optimum conditions exhibited large 4πMs of 4.7 kG and high perpendicular coercivity Hc⊥ of 2.4 kOe and low in-plane one Hc// of 0.2 kOe even when substrate temperature Ts was as low as 475°C. In the latter half of this work, Al substituted Ba ferrite films were deposited from BaFe11Al1O19-y targets and BaFe10Al2O19-y ones on Pt (111) underlayer for increasing Hc⊥ and perpendicular squareness Sc⊥. Although 4πMs decreased with increase of substitution amount x, Hc⊥ increased even for as-deposited films. S⊥ increased after annealing at 850-900°C for 15 min in air the maximum S⊥ of 0.91 was attained for films deposited from BaFe10Al2O19-y target.

    DOI: 10.3379/jmsjmag.22.S3_27

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  • Crystal Structure and Magnetic Characteristics of (La,Sr)MnO3 Films Deposited by Kr Sputtering

    NAMIKAWA T., FENG J., KANETA K., MATSUSHITA N., NAKAGAWA S., NAOE M.

    Journal of the Magnetics Society of Japan   22 ( S1 )   203 - 205   1998

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    &nbsp;&nbsp;La1-xSrxMnO3 films were deposited on SiO2/Si substrates by using the facing target sputtering apparatus with La0.76Sr0.24Mn0.78O3 targets in mixture gas of Kr and O2 or Ar and O2. For films deposited in Kr+O2, (111) orientation was observed, while (110) orientation was preferential for films deposited in Ar+O2. 4&pi;Ms of as-deposited films was very small at most 0.17 kG, of which the value corresponded to 1/18 of that of targets. It increased up to 2.4 kG after post-annealing at 1000&deg;C in O2, while the films prepared under same conditions in Ar+O2 exhibited relatively small 4&pi;Ms of 1.6 kG.

    DOI: 10.3379/jmsjmag.22.S1_203

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  • PREPARATION OF Ba FERRITE FILM WITH WELL c-AXlS ORIENTATION USING Pt UNDERLAYER

    SIOSAWA T., MATSUSHITA N., NAKAGAWA S., NAOE M.

    Journal of the Magnetics Society of Japan   22 ( S1 )   123 - 125   1998

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    &nbsp;&nbsp;Ba ferrite/Pt bilayered films were deposited on thermally oxidized Si wafers using plasma-free sputtering apparatus and post-annealed at 800&deg;C in air for 15 min, and then, the dependence of crystallographical and magnetic characteristics at the substrate temperature Ts in the range from room temperature to 550&deg;C were investigated. Although Ba ferrite films deposited directly on the substrates revealed random c-axis orientation, the Ba ferrite layer deposited on Pt underlayer at Ts above 200&deg;C and post-annealed revealed excellent c-axis orientation. They exhibited the saturation magnetization 4&pi;Ms of 4.2 kG and almost same in-plane and perpendicular coercivity Hc|| and Hc&perp; of 0.7 kOe. The film deposited at Ts above 500&deg;C exhibited 4&pi;Ms of 4.6 kG and high Hc&perp; of 1.8 kOe.

    DOI: 10.3379/jmsjmag.22.S1_123

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  • CONTROL OF MAGNETOCRYSTALLINE ANISOTROPY OF Co-Zn FERRITE SPUTTERED FILMS

    MATSUSHITA N., NOMA K., NAKAGAWA S., NAOE M.

    Journal of the Magnetics Society of Japan   22 ( S1 )   117 - 119   1998

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    &nbsp;&nbsp;Co ferrite and Co-Zn ferrite films were deposited on SiO2/Si substrates and quarts disks under various preparation conditions using the facing targets sputtering apparatus and their crystallographic, magnetic and read/write characteristics have been investigated. Co ferrite films deposited at partial oxygen gas pressure Po2 below 0.2 mTorr at various substrate temperature revealed (311) orientation and quasi in-plane magnetic anisotropy. High Ts above 500&deg;C and Po2 of 2.0 mTorr were necessary to obtain well (111) orientation which had isotropic orientation of magnetization and was suitable for high recording density media. On the other hand, Co-Zn ferrite films deposited at Ts up to 250&deg;C and PO2 of 0.01 mTorr had (111) orientation and possessed moderately large 4&pi;Ms of about 3.7 kG and almost the same in-plane and perpendicular coercivity of about 2.0 kOe. The (111) oriented Co-Zn ferrite disk exhibited high linear recording density D50 as high as 136 kfrpi.

    DOI: 10.3379/jmsjmag.22.S1_117

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  • Excellent crystallographic and perpendicular magnetic characteristics of Ba ferrite films deposited by gas mixture of Ar, Xe and O-2

    N Matsushita, K Noma, S Nakagawa, M Naoe

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   176 ( 1 )   41 - 45   1997.12

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    DOI: 10.1016/S0304-8853(97)00581-7

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  • Study on S- and R-block construction with additional spinel blocks in sputter-deposited Ba ferrite films

    K Noma, N Matsushita, S Nakagawa, M Naoe

    IEEE TRANSACTIONS ON MAGNETICS   33 ( 5 )   3637 - 3639   1997.9

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    DOI: 10.1109/20.619522

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  • Effects of composition control on crystallographic and magnetic characteristics of Ba ferrite films sputtered with the mixture of Xe, Kr, Ar, and O-2, for recording media

    K Noma, N Matsushita, S Nakagawa, M Naoe

    JOURNAL OF APPLIED PHYSICS   81 ( 8 )   4377 - 4379   1997.4

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    DOI: 10.1063/1.364829

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  • Mossbauer study of Ba ferrite sputtered films with large saturation magnetization and perpendicular magnetic anisotropy constant

    K Noma, N Matsushita, S Nakagawa, M Naoe

    JOURNAL OF APPLIED PHYSICS   81 ( 8 )   5137 - 5137   1997.4

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  • Crystallographic and Magnetic Characteristics of Ba Ferrite Sputtered Films for High Density Magnetic Recording Disks

    M. Naoe, K. Noma, N. Matsushita, S. Nakagawa

    Le Journal de Physique IV   07 ( C1 )   C1 - 749   1997.3

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    DOI: 10.1051/jp4:19971306

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  • Ferromagnetic Characteristics of a Perovskite Type of (La, Sr)MnO3 Films Deposited by Kr Sputtering

    N. Matsushita, K. Noma, S. Nakagawa, M. Naoe

    Le Journal de Physique IV   07 ( C1 )   C1 - 629   1997.3

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    DOI: 10.1051/jp4:19971259

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  • Increase of Saturation Magnetization of Ba Ferrite Films Deposited by Adding Xe Into Sputtering Gas Mixture

    K. Noma, N. Matsushita, S. Nakagawa, M. Naoe

    Le Journal de Physique IV   07 ( C1 )   C1 - 487   1997.3

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    DOI: 10.1051/jp4:19971198

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  • CRYSTALLOGRAPHIC AND MAGNETIC CHARACTERISTICS OF c-AXIS ORIENTED Ba FERRITE LAYER DEPOSITED ON Pt(111) UNDERLAYER

    Tomoyosi SIOSAWA, Makoto ICHINOSE, Nobuhiro MATSUSHITA, Shigeki NAKAGAWA, Masahiko NAOE

    Journal of the Magnetics Society of Japan   21 ( S_2_PMRC_97_2 )   S2_73 - 76   1997

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    DOI: 10.3379/jmsjmag.21.s2_73

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  • 酸化物磁性薄膜による等方性磁気ディスクの作製と記録再生特性

    松下伸広, 野間賢二, 中川茂樹, 直江正彦

    日本応用磁気学会誌   21 ( S1 )   34 - 37   1997

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  • Sputter Deposition of Ferrite Films and Application for High Density Rigid Disk Media in Contact Mode

    NOBUHIRO MATSUSHITA

    Proc. of 7th International Conference on Ferrites(ICF7)   735 - 738   1997

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  • Preparation of isotropic magnetic recordingdisk of magnetic oxide film and read/write characteristics

    Journal of Magnetics Society of Japan   21 ( S1 )   34 - 37   1997

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  • Dependence of perpendicular coercivity on residual stress of Ba ferrite/ZnO bilayered films deposited on fused quartz substrate

    K Noma, N Matsushita, S Nakagawa, M Naoe

    IEEE TRANSACTIONS ON MAGNETICS   32 ( 5 )   3822 - 3824   1996.9

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    DOI: 10.1109/20.539184

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  • Theory, fabrication and testing of dual track complimentary type of thin-film recording heads for perpendicular magnetic recording system

    T Ichihara, S Nakagawa, N Matsushita, M Naoe

    JOURNAL OF APPLIED PHYSICS   79 ( 8 )   5910 - 5912   1996.4

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    DOI: 10.1063/1.362169

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  • Ba ferrite films with large saturation magnetization and high coercivity prepared by low-temperature sputter deposition

    K Noma, N Matsushita, S Nakagawa, M Naoe

    JOURNAL OF APPLIED PHYSICS   79 ( 8 )   5970 - 5972   1996.4

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    DOI: 10.1063/1.362123

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  • Highly crystallized (La,Sr)MnO3 films deposited by facing targets sputtering apparatus

    N Matsushita, K Noma, S Nakagawa, M Naoe

    JOURNAL OF APPLIED PHYSICS   79 ( 8 )   5247 - 5249   1996.4

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    DOI: 10.1063/1.361300

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  • Deposition of single-layer CoFe2O4 and multilayer CoFe2O4/α-Fe2O3 with large 4πMs and high Hc using vacuum arc evaporation

    Masahiko Naoe, Nobuhiro Matsushita

    Journal of Magnetism and Magnetic Materials   155 ( 1-3 )   216 - 218   1996.3

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    DOI: 10.1016/0304-8853(95)00741-5

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  • Read/write characteristics of Co-Zn ferrite rigid disks in contact mode recording

    N. Matsushita, A. Morisako, S. Nakagawa, M. Naoe

    IEEE Transactions on Magnetics   32 ( 5 )   3578 - 3580   1996

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    DOI: 10.1109/20.538695

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  • Ba Ferrite Films with Large Saturation Magnetization Prepared by Using Xe as Sputtering Gas

    NOMA K., MATSUSHITA N., NAKAGAWA S., NAOE M.

    Journal of the Magnetics Society of Japan   20 ( 2 )   325 - 328   1996

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    Non-stoichiometric Ba ferrite films were deposited by plasma-free sputtering in the mixture of Xe, Ar, and O2. By using Xe as sputtering gas, the discrepancy of the film composition and the bombardment of growing surface with energetic particles were sufficiently suppressed, and Ba ferrite films with good c-axis crystallite orientation and large saturation magnetization 4πMs seemed to be obtained even at substrate temperatures Ts below 600°C. Sintered Ba ferrite plates with non-stoichiometric compositions of BaO·6.5Fe2O3 were used as sputtering targets, and the Ba content x and dispersion angle of the c-axis orientation of BaM crystallites corresponded well to the Xe partial pressure PXe. The Ba content of films deposited at an optimum PXe of 0.10 Pa was almost the same as that of stoichiometric BaM ferrite, and 4πMS values of 5.1 kG, which is larger than that of bulk BaM ferrite, and 4.7 kG were attained at Ts of 600°C and 475°C, respectively.

    DOI: 10.3379/jmsjmag.20.325

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  • Depositition of Ba Ferrice Films with Large Saturation Magnetization by Using Xe as Sputtering Gas

    NOBUHIRO MATSUSHITA

    20 ( 2 )   333 - 336   1996

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  • Diagnosis of Facing Targets Sputtering System for Deposition of Ba Ferrite Films in Ar, Xe and O2 Gas Mixture

    N.Matsushita, K.Noma, S.Nakagawa, M.Naoe

    J. of Korean Institute of Surface Engineering   Vol. 29 ( No. 6 )   1996

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  • CO-ZN FERRITE RIGID DISKS PREPARED BY PLASMA-FREE SPUTTERING AT LOW SUBSTRATE-TEMPERATURE

    N MATSUSHITA, K NOMA, S NAKAGAWA, M NAOE

    IEEE TRANSACTIONS ON MAGNETICS   31 ( 6 )   2779 - 2781   1995.11

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  • DEPOSITION OF BA FERRITE FILMS FOR PERPENDICULAR MAGNETIC RECORDING MEDIA USING MIXED SPUTTERING GAS OF XE, AR AND O-2

    N MATSUSHITA, K NOMA, S NAKAGAWA, M NAOE

    IEICE TRANSACTIONS ON ELECTRONICS   E78C ( 11 )   1562 - 1566   1995.11

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  • CONTROL OF CRYSTALLOGRAPHIC AND MAGNETIC CHARACTERISTICS IN CO-ZN FERRITE SPUTTERED FILMS

    N MATSUSHITA, K NOMA, S NAKAGAWA, M NAOE

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   140 ( Pt 3 )   2085 - 2086   1995.2

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    DOI: 10.1016/0304-8853(94)00985-6

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  • Deposition of Ba Ferrite Films for Perpendicular Recording Media using Gas Mixture Sputtering

    Matsushita N., Noma K., Nakagawa S., Naoe M.

    Journal of the Magnetics Society of Japan   19 ( S2 )   71 - 74   1995

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    Ba ferrite films with well c-axis orientation and magnetic characteristics were deposited on ZnO underlayer at substrate temperature Ts from 475 to 600°C in the gas mixture of Xe 0.10 Pa, Ar 0.08 Pa and O2 0.02 Pa using the facing targets sputtering apparatus. The film deposited at Ts of 600°C was composed of BaM ferrite and spinel crystallites and had saturation magnetization 4πMs of 5.1 kG and perpendicular anisotropy constant Kul of 4.23×105 J·m-3 which were larger than those of bulk BaM ferrite of 4.8 kG and 3.30 × 105 J·m-3, respectively. C-axis orientation was observed even for the film deposited at low Ts of 475°C and its values of 4πMs, perpendicular coercivity Hc⊥ and in-plane one Hc// were 4.7 kG, 2.38 kOe and 0.19 kOe, respectively.

    DOI: 10.3379/jmsjmag.19.S2_71

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  • New Processes of Synthesizing Co Ferrice Films at Low Substrate Temperature by Facing Targets Sputtering

    N.Matsushita, K.Noma, S.Nakagawa, Masahiko Naoe

    Proc. of IUMRS-ICA-94   Vol. ( No. )   1995

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  • BA FERRITE THIN-FILMS WITH LARGE SATURATION MAGNETIZATION DEPOSITED BY SPUTTERING IN MIXTURE OF XE, AR AND O-2

    N MATSUSHITA, K NOMA, M NAOE

    IEEE TRANSACTIONS ON MAGNETICS   30 ( 6 )   4053 - 4055   1994.11

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    DOI: 10.1109/20.333987

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  • PHYSICS AND TECHNOLOGY OF SPUTTERING FOR DEPOSITING MAGNETIC-FILMS

    M NAOE, N MATSUSHITA, S NAKAGAWA

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   134 ( 2-3 )   395 - 402   1994.6

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    DOI: 10.1016/0304-8853(94)00239-8

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  • PREPARATION OF CO-ZN FERRITE FILMS AT LOW SUBSTRATE-TEMPERATURE BY PLASMA-FREE DC SPUTTERING FOR MAGNETIC RECORDING MEDIA

    N MATSUSHITA, K NOMA, S NAKAGAWA, M NAOE

    JOURNAL OF APPLIED PHYSICS   75 ( 10 )   5975 - 5977   1994.5

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    DOI: 10.1063/1.355530

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  • PREPARATION AND MAGNETIC-PROPERTIES OF BAM FILMS WITH EXCELLENT CRYSTALLINITY BY XE SPUTTERING

    N MATSUSHITA, K NOMA, S NAKAGAWA, M NAOE

    JOURNAL OF APPLIED PHYSICS   75 ( 10 )   7131 - 7133   1994.5

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    DOI: 10.1063/1.356701

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  • Effects of substrate temperature and input power on structure and properties of Co-Zn ferrite sputtered films

    Kenji Noma, Nobuhiro Matsushita, Masahiko Naoe

    Advanced Materials '93   803 - 806   1994

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    DOI: 10.1016/b978-1-4832-8380-7.50189-9

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  • Dual Track Complimentary Type of Thin Film Recording Heads for Perpendicular Magnetic Recording

    NOBUHIRO MATSUSHITA

    Journal of The Magnetics Society of Japan   Vol. 18 ( No. S1 )   213 - 216   1994

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  • THE MAGNETIC MULTILAYERS DEPOSITED BY FACING TARGETS SPUTTERING FOR HIGH DENSITY RECORDING MEDIA

    M NAOE, S NAKAGAWA, N MATSUSHITA

    ADVANCED MATERIALS '93, II - A & B   15 ( A & B )   1135 - 1140   1994

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  • Structure and magnetic properties of a hexagonal type ferrite thin films prepared by facing targets sputtering

    N.Matsushita, K.Noma, S.Nakagawa, M.Naoe

    Proc. of the first Magneto-Electronics International Symposium   Vol. ( No. )   1994

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  • Structure and Magnetic Properties of a Hexagonal Type Ferrite Thin Films Prepared by Facing Targets Sputtering

    N.Matsushita, K.Noma, S.Nakagwa, M.Naoe

    Proc. of the 1st Magneto-Electronics International Symposium   Vol. ( No. )   1994

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  • HIGH COERCIVITY OF BARIUM FERRITE (BAM) FILMS DEPOSITED BY ARC-DISCHARGE EVAPORATION

    N MATSUSHITA, M NAOE

    IEEE TRANSACTIONS ON MAGNETICS   29 ( 6 )   4089 - 4091   1993.11

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    DOI: 10.1109/20.281399

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  • CRYSTALLOGRAPHIC AND MAGNETIC CHARACTERISTICS OF CO-ZN FERRITE FILMS DEPOSITED AT LOW SUBSTRATE-TEMPERATURE BY USING FACING TARGETS SPUTTERING METHOD

    N MATSUSHITA, K NOMA, S NAKAGAWA, M NAOE

    FIRST INTERNATIONAL CONFERENCE ON PROCESSING MATERIALS FOR PROPERTIES   1169 - 1172   1993

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  • PREPARATION OF CO FERRITE THIN-FILMS WITH LARGE PERPENDICULAR AND INPLANE COERCIVITIES BY FACING TARGETS SPUTTERING

    N MATSUSHITA, S NAKAGAWA, M NAOE

    IEEE TRANSACTIONS ON MAGNETICS   28 ( 5 )   3108 - 3110   1992.9

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    DOI: 10.1109/20.179728

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  • VERY THIN PROTECTIVE FILM OF FE-MO-B BASED HARD ALLOY FOR CURL-FREE MAGNETIC-TAPE

    S AKIYAMA, N MATSUSHITA, S NAKAGAWA, M NAOE

    THIN FILMS : STRESS AND MECHANICAL PROPERTIES III   239 ( 239 )   641 - 646   1992

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  • Hard Magnetism of Ultra-Fine Particles of BaM Ferrite Prepared by Arc-Discharge Evaporation at Low Gas Pressure

    NOBUHIRO MATSUSHITA

    Proc. of 6th International Conference on Ferrites(ICF6)   Vol. ( No. )   976 - 979   1992

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  • Preparation of High Tc Phase Bi_2_Sr_2_Ca_2_Cu_3_O_x_ Films with Excellent C-Axis Orientation by Facing Targets Sputtering

    NOBUHIRO MATSUSHITA

    Proc. of 6th International Conference on Ferrites(ICF6)   612 - 615   1992

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  • Preparation of BaFe_12_O_19_/YBa_2_Cu_3_O_x_ Bilayered Films with Well c-Axis Orientation on Amorphous Substrate

    NOBUHIRO MATSUSHITA

    Proc. of 6th International Conference on Ferrites(ICF6)   448 - 451   1992

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  • Magnetic and crystallographic characteristics of CoFe_2O_4 thin films on ZnO underlayer

    MATSUOKA N

    Proc. International Conf. Ferrites   428 - 431   1992

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  • Magneto-optical Properties of Cobalt Ferrite Thin Films Prepared by Facing Targets Sputtering

    N. Matsushita, K. Noma, S.Nakagawa, M.Naoe

    Proc. of 6th International Conference on Ferrites(ICF6)   Vol. ( No. )   1633 - 1636   1992

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  • Preparation of Co-Zn Ferrite Films for Rigid Disks with High Recording Density

    N. Matsushita, K.Noma, S.Nakagawa, M.Naoe

    Proc. of 6th International Conference on Ferrites(ICF6)   Vol. ( No. )   1479 - 1482   1992

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  • Preparation of BaFe12O19/YBa2Cu3Ox Bilayered Films with Well c-Axis Orientation on Amorphous Substrate

    NOBUHIRO MATSUSHITA

    Proc. of 6th International Conference on Ferrites(ICF6)   Vol. ( No. )   1992

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  • Preparation of High Tc Phase Bi2Sr2Ca2Cu3Ox Films with Excellent C-Axis Orientation by Facing Targets Sputtering

    NOBUHIRO MATSUSHITA

    Proc. of 6th International Conference on Ferrites(ICF6)   Vol. ( No. )   1992

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  • SUCCESSIVE GROWTH OF BA-FERRITE MAGNETIC LAYERS ON C-AXIS ORIENTED YBACUO SUPERCONDUCTIVE LAYERS

    M NAOE, N MATSUSHITA, S NAKAGAWA

    JOURNAL OF APPLIED PHYSICS   70 ( 10 )   6489 - 6491   1991.11

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    DOI: 10.1063/1.349884

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  • 2-STEP DEPOSITION AT LOW AND HIGH Ar PRESSURE FOR CURL-FREE Co-Cr MAGNETIC TAPE

    Setsuo AKIYAMA, Nobuhiro MATSUSHITA, Shigeki NAKAGAWA, Masahiko NAOE

    Journal of the Magnetics Society of Japan   15 ( S_2_PMRC_91 )   S2_933 - 938   1991

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    DOI: 10.3379/jmsjmag.15.s2_933

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  • Preparation of BaFe12O19/YBa2Cu3Oy-7 Doublelayered Films by Using Facing Targets Sputtering System

    NOBUHIRO MATSUSHITA

    Proc. 1st Korea-Japan Joint Symposium on Dry Process Technology on New Materials   Vol. ( No. )   1990

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▼display all

Books

  • 磁性ビーズのバイオ・環境技術への応用展開 (分担)

    シーエムシー出版  2006 

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Presentations

  • スピンスプレー法で作製したNiフェライト膜の磁気特性に対するNi置換量依存性

    島田和弥, 林懐恩, 久保田雄太, 岸哲生, 矢野哲司, 松下伸広

    粉体粉末冶金協会講演大会(Web)  2019 

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  • フッ素ドープ酸化スズ電極による心筋梗塞バイオマーカーの電気化学検出

    永井生, 橋本莉奈, 生駒俊之, 岸哲生, 矢野哲司, 松下伸広, 片柳雄大

    日本セラミックス協会年会講演予稿集(CD-ROM)  2017 

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  • バイオセンサ応用に向けたフッ素ドープ酸化スズ(FTO)電極の電気化学特性評価

    橋本莉奈, 北村房男, 生駒俊之, 岸哲生, 矢野哲司, 松下伸広, 片柳雄大, LEE Kuan-ting, LU Shih-yuan

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)  2016 

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  • Recent Progress of High-Frequency Micromagnetics

    高周波マイクロ磁気応用技術調査専門委員会, 佐藤敏郎, 遠藤恭, 曽根原誠, 池田賢司, 池田愼治, 井上光輝, 猪鼻武司, 島田寛, 菅原英州, 竹内輝明, 竹澤昌晃, 田邉信二, 辻本浩章, 直江正幸, 中山俊英, 増田則夫, 松下伸広, 宗像誠, 茂呂英治, 薮上信, 山口正洋, 山本節夫

    技術報告  2014.7  電気学会

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  • Structure and dispersiblity control of Nano-ferrite synthesized by hydrothermal treatment using surfactant

    MAKINOSE Yuki, KATSUMATA Ken-ichi, OKADA Kiyoshi, MATSUSHITA Nobuhiro, TANIGUCHI Takaaki

    2013.6 

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  • Room temperature synthesis of ferrite fine-particle aggregate and its coloration with milling

    SUGINO Hiroyuki, NISHIMURA Kazuhiro, MATSUSHITA Nobuhiro, INOUE Mitsuteru

    2012.8 

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  • Basic Study of 3D Imaging of Magnetically Excited Sound Source by a Novel Technology "Random Path Holophonic Sensor"

    ABE Masanori, UEDA Tomoki, MATSUSHITA Nobuhiro, HANDA Hiroshi, KITAMOTO Yoshitaka

    2012.6 

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  • 両親媒性を有する擬キュービックブルッカイトナノ結晶の合成と酸化還元面の特定

    大野幸亮, 冨田恒之, 谷口貴章, 小暮敏博, 勝又健一, 松下伸広, 岡田清

    日本セラミックス協会年会講演予稿集  2012.3 

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  • Deposition of Zn-Co substituted ferrite films by solution process for Planar inductor

    渡辺哲朗, 丑田公規, 勝又健一, 阿部正紀, 岡田清, 松下伸広, 萩田和洋, 曽根原誠, 佐藤敏郎

    電気学会マグネティックス研究会資料  2012 

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  • Solution Processed Ferrite Films Usable at High Frequency and Their Soft Magnetic Properties

    松下伸広, 勝又健一, 阿部正紀, 岡田清, 渡辺哲朗, 丑田公規

    電気学会マグネティックス研究会資料  2012 

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  • オレイン酸被覆水熱成長法によるブルッカイトナノ結晶の合成と光触媒活性評価

    大野幸亮, 冨田恒之, 谷口貴章, 小暮敏博, 勝又健一, 松下伸広, 岡田清

    日本セラミックス協会秋季シンポジウム講演予稿集  2011.9 

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  • High-Dispersive Pseudocubic Brookite Type TiO2 Nanocrystals Fabricated by Oleate-Modified Hydrothermal Growth Method

    Yukiaki Ono, K.Tomita, Takaaki Taniguchi, Toshihiro Kogure, Ken-ichi Katsumata, Nobuhiro Matsushita, Kiyoshi Okada

    The 9th International Meeting of Pacific Rim Ceramic Societies (PacRim 9)  2011.7 

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  • 高分散性ブルッカイト型酸化チタンの合成

    K.Tomita

    日本セラミックス協会 2011年年会  2011.3 

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  • Recycling of waste solution of ferrite plating to attain low environmental load

    TAKEUCHI Asako, WAGATA Hajime, KATSUMATA Ken-ichi, OKADA Kiyoshi, MATSUSHITA Nobuhiro

    2010.12 

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  • 水溶性チタン錯体を用いた酸化チタン薄膜の作製と光触媒活性評価

    大野幸亮, 山本和広, 冨田恒之, 垣花眞人, 酒井宗寿, 藤嶋昭, 勝又健一, 松下伸広, 岡田清

    日本セラミックス協会年会講演予稿集  2010.3 

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  • Preparation and Application of Medical Magnetic Nano-beads

    ABE Masanori, HANDA Hiroshi, MATSUSHITA Nobuhiro

    2004.11 

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  • RF integrated coplanar typed thin film noise suppressor by spin sprayed ferrite films

    KIM Ki Hyeon, YAMAGUCHI Masahiro, MATSUSHITA Nobuhiro, ABE Masanori

    2004.9 

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  • 界面活性剤を用いないでフェライト微粒子を分散させたコロイド溶液

    畑中真二, 西村一寛, 松下伸広, 阿部正紀

    粉体粉末冶金協会講演概要集  2001.10 

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  • たんぱく質,蛍光物質へのフェライトナノ微粒子の固定

    畑中真二, 西村一寛, 松下伸広, 阿部正紀

    粉体粉末冶金協会講演概要集  2001.10 

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  • Low temperature (3-25.DEG.C.) synthesis of ferrites fine particles and its bio-application.

    NISHIMURA KAZUHIRO, MATSUSHITA NOBUHIRO, ABE MASANORI

    電気学会マグネティックス研究会資料  2001.10 

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  • Room temperature synthesis of spinel ferrites particles.

    MIURA TOMOHIRO, NISHIMURA KAZUHIRO, MATSUSHITA NOBUHIRO, ABE MASANORI

    電気学会マグネティックス研究会資料  2001.3 

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  • Low Temperature (25-80℃ Synthesis of Spinel-Type ((Fe, M)_3 O_4, M = Fe, Co, Ni, and Zn) Magnetic Films

    NISHIMURA K., MATSUSHITA N., ABE M.

    Journal of the Magnetics Society of Japan  2001  The Magnetics Society of Japan

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    Spinel-type (Fe3-xMxO4, M=Fe, Co, Ni, and Zn) polycrystalline films were synthesized by ferrite plating at 25, 50, and 80°C from an aqueous solution of FeCl2 + MCl2 mixed with an oxidizing solution of NaNO2 + CH3COONH4 + NH3. For magnetite (Fe3O4), as the temperature was decreased from 80°C to 25°C, the pH of the reaction solution to obtain single-phase Fe3O4 increased from 6.8 to 8.4, and the maximum rate of film deposition decreased from 13.3 nm/min to 2.3 nm/min. For Fe3-xMxO4, as the temperature was decreased from 90°C to 25°C, the ratio [x in film] / [x in reaction solution] increased from M = Co and Ni, while decreasing for M = Zn. This is explained by the dependence of the adsorption rate of M ions on the pH, which changes as the temperature changes. All the films had saturation magnetizations that compared favorably with those of bulk samples.

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    Other Link: http://dl.ndl.go.jp/info:ndljp/pid/10465485

  • スピネル型(Fe,M)3O4,M=Fe,Co,Ni,and Zn)磁性微粒子の室温合成

    西村一寛, 三浦友博, 松下伸広, 阿部正紀

    粉体粉末冶金協会講演概要集  2000.10 

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  • 中性水溶液中からのマグネタイト微粒子の室温合成

    西村一寛, 三浦友博, 松下伸広, 阿部正紀

    粉体粉末冶金協会講演概要集  2000.10 

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  • Low temperature (25-80℃) synthesis of spinel type ((Fe,M)_3O_4,M=Fe,Co,Ni,and Zn) magnetic films

    NISHIMURA K, MATSUSHITA N, ABE M

    2000.9 

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  • 室温フェライトめっきによるマグネタイト膜の作製

    西村一寛, 松下伸広, 阿部正紀

    東京工業大学放射線棟実験報告書  2000 

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  • Spin-sprayed Ferrite Films with Excellent Heat Resistance by Microstructure Control

    STAC-JTMC  2007 

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  • Novel Medical Ferrite Nanobeads with Bioactive Molecules Immobilized Strongly onto the Surfaces

    Mater. Res. Soc. Symp.  2005 

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  • Crystallization Behavior of the Eutectic Glass in the C12A7-CaYAlO4 System

    The 2nd Directionally Solidified Eutectic Ceramic Workshop  2006 

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  • Direct Fabrication of Crystalline Ceria Films and Patterns by Ink-jet Deposition at Moderate Temperatures

    1st STAC and 2nd JTMC  2007 

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  • フェライトめっき金属を用いたMHz帯域用複合磁気コア

    粉体粉末冶金協会平成18年度秋季大会  2006 

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  • 水熱法を用いた金属ガラス表面への無機酸化物薄膜の作製

    日本セラミックス協会秋季シンポジウム  2009 

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  • Fabrication of C12A7 Composites by Melting /Coating of Eutectic Glass in the System C12A7-CaMAlO4 and C12A7-Ca13Al12Hf2O35

    STAC-JTMC  2007 

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  • 水熱法で成長させたフェライト粒子のポリマー被覆と磁気特性

    粉体粉末冶金協会平成18年度秋季大会  2006 

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  • ソフト溶液プロセス:後熱処理を必要としない構造セラミックスパターンの溶液からの直接作製

    第45回セラミックス基礎科学討論会  2008 

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  • Fabrication of Bioactive Thin Film on Iron-based Glassy Alloys via Hydrothermal-Electrochemical Technique

    PacRim 7  2007 

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  • Bioactive Ceramic Layers Prepared by GIL (Growing Integration Layers) Method on Bulk Metallic Glasses

    BMMP8  2008 

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  • Improvement in Bioactivity on Ti-based Bulk Metallic Glass Surface Utilizing Hydrothermal-Electrochemical Process

    Pacific Rim Meeting on Electrochemical and Solid-State Science  2008 

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  • Excellent Noise Suppression Properties for Spin-Spray Plated MnxZnyFe3-x-yO4 Films Even After Heat Treatment

    MMM 2007  2007 

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  • One-Step Fabrication of Functional Ceramic Patterns by Ink-Jet Deposition Method Using Precursor Solutions at Moderate Temperature (>300℃)

    PMP-III  2008 

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  • Hundred-nanometer Sized Bio-Magnetic Beads with Large Magnetization Using Ferrite Nanoparticles Grown by Hydrothermal Process

    MMM 2007  2007 

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  • Spin-spray Plated Ferrite Films with Ccontrolling the Crystalline Orientation by Underlayers

    MRS 2008 Fall Meeting  2008 

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  • Soft Processing for Ceramics: Direct Fabrication of Nano-Structured Ceramics Paterns from Solution without Post-Firing

    PacRiim 7  2007 

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  • Calcium Titanate and Sodium Titanate Layer on Ti-based Bulk Metallic Glass for Biomedical Application

    2008 

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  • Direct Fabrication of Crystalline Ceria Films and Patterns by Ink-jet Deposition below 300℃

    PacRim 7  2007 

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  • Fabrication of Ceramics Nano-Composites via Melt-Solidification of Eutectic Melts in Al2O3-HfO2 and Al2O3-Y2O3-CaO Systems

    ICC-2  2008 

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  • Bioactive Surface on β-Ti Alloys by Using Hydrothermal-Electrochemical Technique

    20th Fall Meeting of the Ceramic-Society of japan  2007 

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  • Polymer Coated Magnetic Beads for Bio-screening Containing Ferrite Nanoparticles Synthesized by Hydrothermal Treatment

    The 10th International Conference on Ferrite  2008 

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  • Direct Fabrication of Nano-Structured Ceramics from Solution without Post-Firing

    IUMRS-ICAM 2007  2007 

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  • MnZn-ferrite Films by a Solution Process for Electromagnetic Compatible (EMC) Devices

    The 10th International Conference on Ferrite  2008 

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  • Direct Fabricaiton of Ceramics Nano-Composites via Melt-Solidification of Eutectic Melts in Al2O3-R2O3-HfO2 and Al2O3-R2O3-CaO System

    IUMRS-ICAM 2007  2007 

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  • Synthesis of Highly Dispersed Magnetic Nanoperticles from an Iron-oleate Complex

    Pacific Rim Meeting on Electrochemical and Solid State Science  2008 

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  • MnZn Ferrite Film Preparation by Spin-Spray Ferrite Plating and Its Application as GHz Conducted Noise Suppressors

    IUMRS-ICAM 2007  2007 

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  • Direct Fabrication of Various Ceramics Patters from Solution Precursors by Ink-Jet Deposition without Post-Firing

    日本セラミックス協会第20回秋季シンポジウム概要集  2007 

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  • Melt Synthesis of Oxide Phosphors with K2NiF4 Structures: CaLa1-xEuxGaO4

    ISRS-16  2008 

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  • 水熱電気化学法を用いたβ型Ti合金表面の生体活性化

    日本セラミックス協会第20回秋季シンポジウム  2007 

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  • One-Step Fabrication of Functional Ceramic Pattarns Using Precursor Solutions at Moderate Temperatures (<300℃)

    Electroceramics XI  2008 

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  • 溶液法による均一組成ZrO2-CeO2固溶体ナノ結晶作製の問題点

    日本セラミックス協会第20回秋季シンポジウム  2007 

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  • Bioactivation of Bulk Metallic Glass (Ti40Zr10Cu36Pd14) Surface by Hydrothermal-electrochemical Method

    ISHA 2008  2008 

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  • Fabrication of Oriented BaTiO3 Thin Film by Using Induction Heating in Aqueous Solution

    The Annual Meeting of the Ceramic Society of Japan  2008 

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  • Biomagnetic Beads Using Fe3O4 Nanparticles Grown by Hydrothermal Process

    IUMRS-ICMAT 2007  2007 

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  • GHz Conducted Noise Suppression by NiZn Ferrite- Films Plated onto Polyimide Sheets

    9th International Conference on Ferrites  2004 

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  • Bioactive Titanate Nano-mesh on Ti-based Bulk Metallic Glass by Using Hydrothermal-Electrochemical Technique

    INC4  2008 

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  • "Oen Solution Process" in Ferrite Plating-Ease and Advantage

    IUMRS-ICMAT 2007  2007 

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  • Conducted Noise Suppression in GHz Range by Composite Sheets and Ferrite-Plated Films

    9th International Conference on Ferrites  2004 

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  • Fabrication of Carbon-Encapsulated Magnetic Metal Nanoparticles by Using Arc-Discharge in Organic Solvents

    INC4  2008 

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  • Redetermination of the Liquides Temperatures in the Y2O3-Al2O3 System by a Digital Pyrometry

    The Doyama Symposium on Advanced Materials  2007 

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  • Soft Processing for Ceramics: Single-Step Fabrication of Nano-Structured Ceramics Patterns from Solution without Post-firing

    ICC-2  2008 

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  • Fabrication of BaTiO3 Film by a Spray Deposition Using Stable Precursor Solutions

    The Doyama Symposium on Advanced Materials  2007 

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  • Direct Patterning of Nano-Structured Ceramics from Solufiton Differences from Conventional Printing and Lithographic Methods

    ICE 2007  2007 

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  • Formation of Magnetic Metal Nanoparticles Encapsulated in Carbon by Electrodischarge in Organic Solvent

    2005 

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  • Patterning of BaTiO3 by Ink-Jet Deposition Using Water-Soluble Precursor

    BMMP8  2008 

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  • Direct Fabrication of Crystalline Ceria Films and Patterns by Ink-jet Deposition at Moderate Temperature

    ICE 2007  2007 

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  • Formation of Magnetic Metal Nanoparticles Encapsulated in Carbon by Electrodischarge in Organix Solvent

    The 16th Symposium of the MRS-Japan  2005 

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  • Direct Patterning of Nano-Structured Ceramics from Solution Differences from Conventional Printing and Lithographic Methods

    32nd International Conference & Exposition on Advanced Ceramics & Compounds  2008 

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  • Fabrication of BaTiO3 Film by a Spray Method Using Precursor Solutions

    IUMRS-ICMAT 2007  2007 

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  • GHz Conducted Noise Suppression by NiZn Ferrite- Films Plated onto Polyimide Sheets

    9th International Conference on Ferrites  2004 

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  • Synthesis and Characterization of Oxynitride Perovskites LaAON2 (A=Nb, Ta) from Metal Precursors in Supercritical Ammonia

    BMMP8  2008 

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  • Direct Fabrication of Crystalline Ceria Films and Patterns by Ink-jet Deposition below 300℃

    IUMRS-ICMAT 2007  2007 

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  • Conducted Noise Suppression in GHz Range by Composite Sheets and Ferrite-Plated Films

    9th International Conference on Ferrites  2004 

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  • Low non-specific protein adsorption medical beads containing ferrite nanoparticles

    Pacifichem 2005 Congress  2005 

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  • 単分散MnZnフェライトナノ粒子の水熱合成

    粉体粉末冶金協会平成21年度秋季大会  2009 

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  • Aqueous Solution Route to Size-Controlled and Doped Organophilic Ceria;

    2009 

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  • Redetermination of the Liquides Temperatures in the Y2O3-Al2O3 System by a Digital Pyrometry

    The Doyama Symposium on Advanced Materials  2007 

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  • Control of Crystallite Orientation of BaTiO3 Layer Fabricated on Ti Seed Layer by Novel Solution Process Using High-Frequency Induction Heating

    2009 

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  • Fabrication of BaTiO3 Film by a Spray Deposition Using Stable Precursor Solutions

    The Doyama Symposium on Advanced Materials  2007 

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  • Fabrication of BaTiO3 Layers by Novel Solution Process Using High-frequency Induction Heating

    ICMAT 2009  2009 

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  • Direct Fabrication of Various Ceramics Patters from Solution Precursors by Ink-Jet Deposition without Post-Firing

    日本セラミックス協会第20回秋季シンポジウム概要集  2007 

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  • Fabrication of Crystallized ZnO Film with Dense Columnar Structure at 90℃ by Spin-spray Technique

    ICMAT 2009  2009 

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  • Bioactive Surface on β-Ti Alloys by Using Hydrothermal-Electrochemical Technique

    20th Fall Meeting of the Ceramic-Society of japan  2007 

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  • Biomagnetic Beads Using Fe3O4 Nanparticles Grown by Hydrothermal Process

    IUMRS-ICMAT 2007  2007 

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  • Bioactive Calcium Titanate Layer Pabricated on Ti-based Bulk Metallic Glass by Hydrothermal-Electrochemical Method

    2009 

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  • "Oen Solution Process" in Ferrite Plating-Ease and Advantage

    IUMRS-ICMAT 2007  2007 

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  • Fabrication of Nano-structured Titanate Layers to Obtain Bioactivity on Ti-based Bulk Metallic Glass

    ISHA 2010  2010 

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  • Direct Fabrication of Crystalline Ceria Films and Patterns by Ink-jet Deposition below 300℃

    IUMRS-ICMAT 2007  2007 

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  • Microstructure Control for Spin-sprayed ZnO Films at 90℃ and their Photocatalytic Activity

    7th International Conference on Inorganic Materials  2010 

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  • Photocatalytic activity of ZnO films prepared by spin-spray method

    2010 

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  • Synthesis and Analysis of Perovskite Type Na, LaTa3O9-xNx

    ICMAT 2007  2007 

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  • Patterned CaTiO3 nanostructures prepared by two-step anodization-hydrothermal method

    STAC-4概要集  2010 

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  • Direct Patterning of Nano-Structured Ceramics from Solufiton Differences from Conventional Printing and Lithographic Methods

    ICE 2007  2007 

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  • Formation of bioactive titanate nanomesh layer on micro-grooved Ti40Zr10Cu36Pd14 metallic glass by femtosecond laser irradiation

    2010 

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  • Direct Fabrication of Crystalline Ceria Films and Patterns by Ink-jet Deposition at Moderate Temperature

    ICE 2007  2007 

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  • Surface Modification on the Bulk Metallic Glass by Hydrothermal Method

    STAC-4概要集  2010 

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  • Fabrication of BaTiO3 Film by a Spray Method Using Precursor Solutions

    IUMRS-ICMAT 2007  2007 

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  • 金属酸化物薄膜の光誘起親水化現象

    第2回資源・環境対応セラミックス材料/技術研究討論会  2010 

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  • Direct Fabrication of Ceramics Patterns from Solution Precursors by Ink-Jet Deposition without Post-Firing

    10th Intl. Conf. and Exhibition of the Euro Ceram Soc.  2007 

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  • Zn-Feフェライトめっき薄膜のヘイメンパワーインダクターへの適用

    第33回日本磁気学会学術講演会  2010 

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  • Direct Patterning of Nano-Structured Ceramics from Solution Differences from Conventional Printing and Lithographic Methods

    ICMAT 2007  2007 

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  • 集積化電源用フェライトメッキ膜プレーナインダクタの試作

    電気学会・マグエンティクス研究会  2010 

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  • Determination of Liquidus Curve in the Y2O3-Al2O3 Binary System by Digital Pyrometry

    ICMAT 2007  2007 

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  • スピンスプレー法による高周波磁気デバイス用Znフェライト膜の作製

    粉体粉末冶金協会春季講演大会  2010 

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  • Orientation-controlled NiO Layers and Their Effects on Magnetic Property of FeCoB/NiO Bilayers

    ICMAT 2007  2007 

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  • Hydrothermal Synthesis of Size, Shape, and Composition controlled Ceria Nanoparticles Using Metal Oleic Complex

    10th Intl. Conf. and Exhibition of the Euro. Ceram. Soc.  2007 

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  • Formation of Calcium Titanate Layer on Ti-based Bulk Metallic Glass by Hydrothermal-electrochemical Method for Biomedical Application

    5th Intl. Conf. on Materials for Advanced Technologies 2009  2009 

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  • 紫外共鳴ラマン散乱によるGd3+ドーブCeO2ナノ結晶の欠陥構造の高感度検出

    粉体粉末冶金協会平成21年度春季大会  2009 

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  • バイオマテリアルインテグレーション ~再生医療・ナノメディスンの臨床実用化に必要な界面形成技術の開発~

    第4回3大学3研究所連携プロジェクト公開討論会  2009 

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  • Fabrication of BaTiO3 Layers by Novel Solution Process Using High-frequency Induction Heating

    ICMAT 2009  2009 

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  • Fabrication of Crystallized ZnO Film with Dense Columnar Structure at 90℃ by Spin-spray Technique

    ICMAT 2009  2009 

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  • Soft Processing for Ceramics: Single-step Fabrication of Nano-Structured Ceramics (Fioms, Integrated Layers and Patterns) from Solution without Firing

    5th Intl. Conf. on Materials for Advanced Technologies 2009  2009 

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  • Rational Hydrothermal Route to Functional Metal Oxide Nanoparticles

    5th Intl. Conf. on Materials for Advanced Technologies 2009  2009 

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  • 金属ガラスの生体活性化:チタン基金属ガラス上へのCaTiO3膜の形成

    日本セラミックス協会2009年年会  2009 

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  • 金属ガラスの生体活性化:Ti基金属ガラス上へのチタネイトナノメッシュ作製

    日本セラミックス協会2009年年会  2009 

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  • 酸化物ナノ粒子の新規合成法:「オレート錯体沈殿法」

    日本セラミックス協会2009年年会  2009 

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  • Hydrothermal Growth of NaLa(WO4)2:Er3+/Yb3+ Microcrystals with Controlled-Morphology and Up-Conversion Luminescent Properties

    19th MRS-J Symposium  2009 

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  • Bioactive Calcium Titanate Layer Pabricated on Ti-based Bulk Metallic Glass by Hydrothermal-Electrochemical Method

    2009 

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  • Aqueous Solution Route to Size-Controlled and Doped Organophilic Ceria;

    2009 

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  • Control of Crystallite Orientation of BaTiO3 Layer Fabricated on Ti Seed Layer by Novel Solution Process Using High-Frequency Induction Heating

    2009 

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  • Aqueous process synthesis of size-controlled magnetite nanoparticles for bio medical application

    The 26th International Japan-Korea Seminar on Ceramics  2009 

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  • Formation of Bioactive Titanate Nanomesh Layers by Hydrothermal-Electrochemical Method on Ti-based Bulk Metallic Glass Irradiated by a Femtosecond laser

    Special Symposium for Celebration on the 10th anniversary of the Division of Ceramics in Medicine, Biology and Biomimetics, The Ceramic Society of japan in conjunction with 9th Asian BioCeramics Symposium  2009 

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  • Fabrication of Calcium Titanate Layer on Ti-based Bulk Metal Glass by Hydrothermal-electrochemical Method Using Water/Ethanol solvents

    第19回日本MRS学術シンポジウム  2009 

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  • Effect of Ti Seed Layer on the Morphology of BaTiO3 Layer Fabricated by Solution Process Using High-frequency Induction Heating

    第19回日本MRS学術シンポジウム  2009 

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  • Mn-Zn ferrite Thick Film Prepared at Low Temperature by Spin-Spray Technique

    The 26th International Japan-Korea Seminar on Ceramics  2009 

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  • Aqueous Solutions Synthesis of Size-Controlled Magnetic Nanoparticles for Bio Magnetic Beads

    The 26th International Japan-Korea Seminar on Ceramics  2009 

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  • Synthesis of Ferrite Films from Aqueous Solution and Application for GHz Noise Suppressors

    CIMTEC 2006  2006 

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  • Ni-Zn ferrite films synthesized from aqueous solution usablefor sheet-type conducted noise suppressors in GHz range

    J Electroceram  2006 

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  • Fabrication of Carbon-Encapsulated Magnetic Metal Nanoparticles by Using Arc-Discharge in Methanol

    The annual Meeting of the Ceramic Society of Japan  2006 

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  • Direct Patterning of Functional Ceramic Films by Soft Solution Processing Using Ink-Jet Reaction Methods

    CIMTEC 2006  2006 

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  • Fabrication and Characterization of Amorphous Bulk and Ceramics Nano-Composites from Eutectic Melts in Al2O3-R2O3-HfO2(ZrO2) and Al2O3-R2O3-CaO Systems

    CIMTEC 2006  2006 

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  • Formation and Properties of CeO2 and (Ce, Gd)O2-x Films by On-Site Ink-Jet and Spray Deposition

    10th ACSSI  2006 

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  • フェライト/金属複合材料による高周波領域用磁気コアの作製

    日本セラミックス協会2006年年会  2006 

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  • 水/エチレングリコール混合溶液を用いたCeO2ナノ粒子の水熱合成と評価

    日本セラミックス協会2006年年会  2006 

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  • メタノール溶液中でのアーク放電による金属内包カーボンナノカプセルの作製

    日本セラミックス協会2006年年会  2006 

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  • CaO・Al2O3・HfO2系における融体急冷によるアモルファス相の形成とその結晶化

    日本セラミックス協会2006年年会  2006 

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  • Compositional Optimization in NiZnCo Ferrite Films Prepared by Spin Spray Technique

    BMMP-6  2006 

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  • Ink-jet/Spray Deposition Methods for Direct Fabrication of TiO2 Patterns

    BMMP-6  2006 

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  • High Rate Deposition (>120nm/min) of Ni-Zn Ferrite Films from a Highly Alkaline Solution for GHz Conducted Noise Suppressors

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • Melt Synthesis and Characterization of (A1-xA'x)(B1-yB'y)O3 Complexed Oxide Perovskites

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • Fabrication of Amorphous Bulk and Ceramics Nano-Comosites from Eutectic Melts in Al2O3-R2O3-HfO2(ZrO2) and Al2O3-R2O3-CaO Systems

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • Carbon-Encapsulated Magnetic Metal Nanoparticles Synthesized Using Arc-Discharge in Various Organic Solvents

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • Direct Patterning of Functional Ceramic Films by Ink-Jet and Spray Reaction Method

    BMMP-6  2006 

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  • High Flux Density Composite Magnetic Cores by Compaction of Metal Powders with Ferrite Coating

    ISAC-3  2006 

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  • Fabrication and Crystallization of Amorphous Bulk Materials in CaO-Al2O3-HfO2 System by Melting Method

    ISAC-3  2006 

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  • Direct Patterning of Bariium Titanate Thin Films by Laser Activated Hydrothermal Reactions

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • Fabrication of Bioactive Ceramics Film on β-Ti Alloys by Using Hydrothermal-electrochemical Technique

    The 87th Annual Meeting of the Chemical Society of japan  2007 

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  • ペロブスカイト関連型NaxLaTa3O9-xNx酸窒化物の合成と評価

    日本セラミックス協会2007年年会  2007 

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  • Ferrite Plating by Spin Spray Technique without Using Any Strong Oxidizing Agents

    2006 MRS Fall Meeting  2006 

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  • 輝度温度計によるAl2O3-Y2O3系状態図の作成

    日本セラミックス協会2007年年会  2007 

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  • Fabrication of CaTiO3 Thin Film on Ti-Zr-Nb Alloy by Using Hydrothermal-Electrochemical Technique

    MRS Fall Meeting  2006 

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  • 水熱電気化学法を用いたベータ型Ti合金への生体活性セラミックス薄膜の作製

    日本化学会第87春季年会  2007 

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  • Synthesis and Characterization of ZrO2 Nanoparticles by Hydrothermal/Solvothermal Methods Using Ethylene Glycol

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • 溶融法によるペロブスカイト型関連酸化物蛍光体の作製と評価

    日本化学会第87春季年会  2007 

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  • Fabrication and Characterization of Crystalline and Non-crystalline Bulk Nano-Composites Ceramics from Eutectic Melts in Al2O3-R2O3-HfO2 and Al2O3-R2O3-CaO Systems

    The 2nd Directionally Solidified Eutectic Ceramic Workshop  2006 

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  • Stability of RMO3 (R=rare earth, M=M3+ ions) Perovskites from the view point of their Lattice Energies and Distortions

    The 2nd Intl. Conf. on Physics of Solid State Ionics  2007 

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  • Ferrite Film Preparation from Aqueous Solution without Post-Annealing, and Application for Noise Suppressors in GHz Range

    Bio-Inspired Synthesis and Materials  2006 

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  • A Novel and Simple Process for Ferrite Film Preparation from One Solution without Using Hazardous Oxidizing Agent

    10th Joint MMM/Intermag Conference  2007 

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  • Surface Activation of Ai-alloy by Hydrothermal-Electrochemical Process for Biocompatible Materials

    Asian BioCeramic Symposium 2006  2006 

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  • Preparation and Characterization of Mn-Zn Ferrite Films Having High Resistivity for GHz Conducted Noise Suppressors

    BMMP-7  2007 

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  • Ferrite Plating by Spin Spray Technique Using Iron Dextran Complex

    2006 MRS Fall Meeting  2006 

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  • スプレー法によるBaTiO3薄膜の作製

    日本セラミックス協会2007年年会  2007 

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  • Size, Shape and Composition Controllable Synthesis of Ce Based Oxide Nanoparticles by Hydrothermal Method Using Metal Oleic Complex

    2006 MRS Fall Meeting  2006 

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  • 溶解-急冷法による複合ペロブスカイト型酸化物(AxA'1-x)(BxB'1-x)O3の合成

    日本セラミックス協会第19回秋季シンポジウム  2006 

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  • Fabrication of ZrO2 Nanoparticles by Hydrothermal Methods with Ethylene Glycol

    1st Intl. Symp. on Aqua Science, Water Resource and Innovation Development of Countryside  2007 

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  • Fabrication of Carbon-Encapsulated Magnetic Metal Nanoparticles by High Frequency Arc-Discharge in Various Organic Solvent

    The 30 Annual Conference on Magnetics in Japan  2006 

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  • Fabrication of Titanate Nano-mesh on (Ti-Zr-Cu-Pd)Ca Bulk Glassy Alloy by Hydrothermal-Electrochemical Technique

    MRS Fall Meeting  2007 

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  • オレイン酸錯体を用いたCeO2系固溶体ナノ粒子の水熱合成

    日本セラミックス協会第19回秋季シンポジウム  2006 

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  • Synthesis and Characterization of Oxynitride Perovskites LaAON2 (A=Nb, Ta) from Metal Precursors in Supercritical Ammonia

    MRS Fall Meeting  2007 

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  • Powder-less Processing for Ceramics: Direct Fabrication of Nano-Composite Ceramics via Melt-Solidification of Eutectic Melts in Al2O3-R2O3-CaO-HfO2Systems

    PacRim 7  2007 

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  • Ferrite Film Preparation by Spraying One Solution

    日本セラミックス協会第19回秋季シンポジウム  2006 

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  • Single-Step Patterning of Functional Ceramic Films by Soft Solution Processing Using Ink-Jet Reaction Methods

    PacRim 7  2007 

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  • Biocompatible Ceramic Coating on Ti and Ti-Alloy by Soft Solution Processing

    ICCCI 2006  2006 

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  • Direct Fabrication of Bioactive Ceramic Film on Fe^based Glass from Aqueous Solution

    MRS Fall Meeting  2007 

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  • CaTiO3 Film Formation on Ti and Ti-Alloy by Electrochemical Process for Hydroxyapatite Deposition

    ICCCI 2006  2006 

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  • Ferrite Films by a `Low Temperature', `Low Cost', `No Post-Annealing' Spin-Spray Process for High Frequency Applications

    MRS Fall Meeting  2007 

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  • 有機溶媒中における高周波アーク放電による磁性金属内包カーボンナノカプセルの直接作製

    第30回日本応用磁気学会講演会  2006 

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  • Hundred-nanometer Sized Bio-Magnetic Beads with Large Magnetization Using Ferrite Nanoparticles Grown by Hydrothermal Process

    MMM 2007  2007 

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  • Hydrothermal Preparation of Photocatelyst - Activated Carbon Composite (TiO2/ZnO-AC) and Its Application

    ISHR & ICSTR 2006  2006 

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  • Soft Processing for Ceramics: Direct Fabrication of Nano-Structured Ceramics Paterns from Solution without Post-Firing

    PacRiim 7  2007 

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  • NiZaCe Ferrite Films by Spin Spray Technique - Morphology and Magnetic Properties

    ISHR & ICSTR 2006  2006 

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  • Direct Fabrication of Crystalline Ceria Films and Patterns by Ink-jet Deposition below 300℃

    PacRim 7  2007 

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  • Strong Magnetic Loss in GHz Range of Ni-Zn-Co Ferrite Film Prepared from Aqueous Solution

    ISHR & ICSTR 2006  2006 

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  • Fabrication of Bioactive Thin Film on Iron-based Glassy Alloys via Hydrothermal-Electrochemical Technique

    PacRim 7  2007 

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  • 水溶液からのフェライト膜の形成と伝導ノイズ抑制体への応用

    日本セラミックス協会第19回秋季シンポジウム  2006 

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  • Hydrothermal Synthesis of HfO2- and CeO2- Solid Solution Nanoparticles with High Dispersability by Surface Organic species

    ISHR & ICSTR 2006  2006 

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  • 水熱電気化学法を用いたti金属ガラス表面の生体活性化

    2009 

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  • Determination of Liquidus Curve in the Y2O3-Al2O3 Binary System by Digital Pyrometry

    ICMAT 2007  2007 

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  • Transparent Dispersed Sol of Crystalline CeO2 Nanoparticles Synthesized by Aqueous Solution Route Using Ethylene Glycol

    第16回日本MRS学術シンポジウム  2005 

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  • 水溶性チタン錯体を用いた酸化チタン薄膜の作製と光触媒活性評価

    第16回シンポジウム 光触媒反応の最近の展開  2009 

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  • Orientation-controlled NiO Layers and Their Effects on Magnetic Property of FeCoB/NiO Bilayers

    ICMAT 2007  2007 

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  • Composite Magnetic Cores usable in MHz range prepared by compacting ferrite-plated metal powder

    第16回日本MRS学術シンポジウム  2005 

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  • Hydrothermal Growth of NaLa(WO4)2:Er3+/Yb3+ Microcrystals with Controlled-Morphology and Up-Conversion Luminescent Properties

    19th MRS-J Symposium  2009 

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  • Synthesis and Analysis of Perovskite Type Na, LaTa3O9-xNx

    ICMAT 2007  2007 

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  • Bioactive Ceramic Layers Prepared by GIL (Growing Integration Layers) Method on Bulk Metallic Glasses

    BMMP8  2008 

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  • 水熱法を用いたTi基金属ガラス表面への酸化チタン薄膜の作製とその特性評価

    第16回シンポジウム 光触媒反応の最近の展開  2009 

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  • Melt Synthesis of Oxide Phosphors with K2NiF4 Structures

    ISRS-16  2007 

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  • Direct Fabrication of Carbon-Encapsulated Magnetic Metal Nanoparticles from Organic Solvent

    The 85th Annual Meeting of the Chemical Society of Japan  2005 

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  • Formation of Bioactive Titanate Nanomesh Layers by Hydrothermal-Electrochemical Method on Ti-based Bulk Metallic Glass Irradiated by a Femtosecond laser

    Special Symposium for Celebration on the 10th anniversary of the Division of Ceramics in Medicine, Biology and Biomimetics, The Ceramic Society of japan in conjunction with 9th Asian BioCeramics Symposium  2009 

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  • Hydrothermal Synthesis of Size, Shape, and Composition controlled Ceria Nanoparticles Using Metal Oleic Complex

    10th Intl. Conf. and Exhibition of the Euro. Ceram. Soc.  2007 

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  • Novel Medical Ferrite Nanobeads with Bioactive Molecules Immobilized Strongly onto the Surfaces

    Mater. Res. Soc. Symp.  2005 

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  • Fabrication of Calcium Titanate Layer on Ti-based Bulk Metal Glass by Hydrothermal-electrochemical Method Using Water/Ethanol solvents

    第19回日本MRS学術シンポジウム  2009 

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  • Direct Fabrication of Ceramics Patterns from Solution Precursors by Ink-Jet Deposition without Post-Firing

    10th Intl. Conf. and Exhibition of the Euro Ceram Soc.  2007 

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  • Ni-Zn Ferrite Films Synthesized fro Aqueous Solution That Are Usable for Sheet-type Conducted Noise Suppressors in GHz Range

    ICMAT2005/ICAM2005  2005 

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  • Effect of Ti Seed Layer on the Morphology of BaTiO3 Layer Fabricated by Solution Process Using High-frequency Induction Heating

    第19回日本MRS学術シンポジウム  2009 

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  • Direct Patterning of Nano-Structured Ceramics from Solution Differences from Conventional Printing and Lithographic Methods

    ICMAT 2007  2007 

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  • Carbon-Encapsulated Magnetic Metal Nanoparticles by Arc-Discharge in Organic Solvent

    ICMAT  2005 

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  • Composite Magnetic Cores usable in MHz range prepared by compacting ferrite-plated metal powder

    第16回日本MRS学術シンポジウム  2005 

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  • Upgrading of valuable materials contained in activated sludge

    STAC-JTMC  2007 

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  • Low non-specific protein adsorption medical beads containing ferrite nanoparticles

    Pacifichem 2005 Congress  2005 

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  • Aqueous Solutions Synthesis of Size-Controlled Magnetic Nanoparticles for Bio Magnetic Beads

    The 26th International Japan-Korea Seminar on Ceramics  2009 

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  • Mossbauer study of magnetization derection in spin sprayed ferrite films

    The 1st International Symposium on Advanced Magnetic Materials and Applications  2007 

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  • Formation of Magnetic Metal Nanoparticles Encapsulated in Carbon by Electrodischarge in Organic Solvent

    2005 

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  • Aqueous process synthesis of size-controlled magnetite nanoparticles for bio medical application

    The 26th International Japan-Korea Seminar on Ceramics  2009 

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  • Fabrication of Bioactive Ceramics Thin Film on Ti-based Bulk Alloys by Using Hydrotherma-Electrochemical Technique

    STAC-JTMC  2007 

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  • Formation of Magnetic Metal Nanoparticles Encapsulated in Carbon by Electrodischarge in Organix Solvent

    The 16th Symposium of the MRS-Japan  2005 

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  • Mn-Zn ferrite Thick Film Prepared at Low Temperature by Spin-Spray Technique

    The 26th International Japan-Korea Seminar on Ceramics  2009 

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  • フェライト/生体解性ポリマー複合ビーズ作製へのインクジェット法の適用

    粉体粉末冶金協会平成21年度秋季大会  2009 

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  • Bioactive Surface Ceramics Formation on Bulk Alloys and Metallic Glasses by Oxidation of Their Components

    STAC-JTMC  2007 

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  • Ni-Zn Ferrite Films Synthesized fro Aqueous Solution That Are Usable for Sheet-type Conducted Noise Suppressors in GHz Range

    ICMAT2005/ICAM2005  2005 

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  • ニオビアナノシートを用いたNaNbO3光触媒ガラスの作製

    2009年度セラミックス総合研究会  2009 

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  • Room Temperature Synthesis of Monodispersed CeO2 Nanoparticles by Oleate-precipitation Method

    STAC-JTMC  2007 

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  • Carbon-Encapsulated Magnetic Metal Nanoparticles by Arc-Discharge in Organic Solvent

    ICMAT  2005 

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  • Bioactive Titanate Nano^-Structured Layers on Ti-Based Bulk Metallic Glass by S Hydrothermal-Electrochemical Technique

    The 26th International Japan-Korea Seminar on Ceramics  2009 

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  • Fabrication of Bioactive Ceramics Thin Film on Ti-based bulk alloys by using hydrothermal-electrochemical technique

    STAC-JTMC  2007 

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  • Transparent Dispersed Sol of Crystalline CeO2 Nanoparticles Synthesized by Aqueous Solution Route Using Ethylene Glycol

    第16回日本MRS学術シンポジウム  2005 

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  • The Study of Photo-induced Hydrophilicity of Photocatalytic Thin Films

    The 26th International Japan-Korea Seminar on Ceramics概要集  2009 

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  • Lattice energy calculation for Formation of Perovskite-type oxide

    STAC-JTMC  2007 

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  • スピンスプレーによる酸化亜鉛膜の作製

    日本セラミックス協会秋季シンポジウム  2009 

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  • Fabrication of Bioactive Thin Film on Fe-based Glassy Alloys via Hydrothermal-Electrochemical Technique

    STAC-JTMC  2007 

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  • High Flux Density Composite Magnetic Cores by Compaction of Metal Powders with Ferrite Coating

    ISAC-3  2006 

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  • 日本が生んだ「フェライト」という材料の応用例の紹介

    電子情報通信学会東海支部講演会  2009 

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  • Spin-sprayed Ferrite Films with Excellent Heat Resistance by Microstructure Control

    SATC-JTMC  2007 

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  • Fabrication and Crystallization of Amorphous Bulk Materials in CaO-Al2O3-HfO2 System by Melting Method

    ISAC-3  2006 

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  • スピンスプレー法の拘束堆積化とMn-Znフェライト厚膜の作成

    粉体粉末冶金協会平成21年度秋季大会  2009 

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  • Multilayered films composed of FeCoB layer and anti-ferromagnetic oxide

    2007 

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  • Direct Fabrication of Carbon-Encapsulated Magnetic Metal Nanoparticles from Organic Solvent

    The 85th Annual Meeting of the Chemical Society of Japan  2005 

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  • Excellent Noise Suppression Properties for Spin-Spray Plated MnxZnyFe3-x-yO4 Films Even After Heat Treatment

    MMM 2007  2007 

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  • MnZn-ferrite Films by a Solution Process for Electromagnetic Compatible (EMC) Devices

    The 10th International Conference on Ferrite  2008 

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  • Fabrication of Carbon-Encapsulated Magnetic Metal Nanoparticles by Using Arc-Discharge in Methanol

    The annual Meeting of the Ceramic Society of Japan  2006 

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  • Synthesis of Highly Dispersed Magnetic Nanoperticles from an Iron-oleate Complex

    Pacific Rim Meeting on Electrochemical and Solid State Science  2008 

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  • Direct Patterning of Functional Ceramic Films by Soft Solution Processing Using Ink-Jet Reaction Methods

    CIMTEC 2006  2006 

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  • Improvement in Bioactivity on Ti-based Bulk Metallic Glass Surface Utilizing Hydrothermal-Electrochemical Process

    Pacific Rim Meeting on Electrochemical and Solid-State Science  2008 

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  • Fabrication and Characterization of Amorphous Bulk and Ceramics Nano-Composites from Eutectic Melts in Al2O3-R2O3-HfO2(ZrO2) and Al2O3-R2O3-CaO Systems

    CIMTEC 2006  2006 

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  • 鉄-オレイン酸錯体を前駆体とした水熱法によるマグネタイトナノ粒子の合成

    粉体粉末冶金協会2008秋季大会  2008 

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  • スピンスプレー法による酸化亜鉛薄膜の作製と評価

    日本セラミックス協会第21回秋季シンポジウム  2008 

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  • Direct Patterning of Functional Ceramic Films by Ink-Jet and Spray Reaction Method

    BMMP-6  2006 

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  • Bioactivation of Bulk Metallic Glass (Ti40Zr10Cu36Pd14) Surface by Hydrothermal-electrochemical Method

    ISHA 2008  2008 

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  • Compositional Optimization in NiZnCo Ferrite Films Prepared by Spin Spray Technique

    BMMP-6  2006 

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  • Fabrication of Ceramics Nano-Composites via Melt-Solidification of Eutectic Melts in Al2O3-HfO2 and Al2O3-Y2O3-CaO Systems

    ICC-2  2008 

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  • Ink-jet/Spray Deposition Methods for Direct Fabrication of TiO2 Patterns

    BMMP-6  2006 

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  • Polymer Coated Magnetic Beads for Bio-screening Containing Ferrite Nanoparticles Synthesized by Hydrothermal Treatment

    The 10th International Conference on Ferrite  2008 

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  • High Rate Deposition (>120nm/min) of Ni-Zn Ferrite Films from a Highly Alkaline Solution for GHz Conducted Noise Suppressors

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • Melt Synthesis and Characterization of (A1-xA'x)(B1-yB'y)O3 Complexed Oxide Perovskites

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • 溶液中での高周波誘導加熱によるTi下地層からのBaTiO3層の炸裂

    日本セラミックス協会第21回秋季シンポジウム  2008 

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  • Fabrication of Amorphous Bulk and Ceramics Nano-Comosites from Eutectic Melts in Al2O3-R2O3-HfO2(ZrO2) and Al2O3-R2O3-CaO Systems

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • 水熱電気化学法によるβ型Ti合金表面への複合酸化物層の形成と生体活性化

    日本セラミックス協会第21回秋季シンポジウム  2008 

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  • Carbon-Encapsulated Magnetic Metal Nanoparticles Synthesized Using Arc-Discharge in Various Organic Solvents

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • One-Step Fabrication of Functional Ceramic Pattarns Using Precursor Solutions at Moderate Temperatures (<300℃)

    Electroceramics XI  2008 

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  • Fabrication of Carbon-Encapsulated Magnetic Metal Nanoparticles by Using Arc-Discharge in Organic Solvents

    INC4  2008 

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  • Synthesis and Characterization of Oxynitride Perovskites LaAON2 (A=Nb, Ta) from Metal Precursors in Supercritical Ammonia

    MRS Fall Meeting  2007 

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  • ソフト溶液プロセスによるフェライト膜の作製と電磁ノイズ抑制体への応用

    日本学術振興会素地プロセシング第69委員会第2分科会研究会(東京)  2008 

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  • Fabrication of ZrO2 Nanoparticles by Hydrothermal Methods with Ethylene Glycol

    1st Intl. Symp. on Aqua Science, Water Resource and Innovation Development of Countryside  2007 

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  • Soft Processing for Ceramics: Single-Step Fabrication of Nano-Structured Ceramics Patterns from Solution without Post-firing

    ICC-2  2008 

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  • Stability of RMO3 (R=rare earth, M=M3+ ions) Perovskites from the view point of their Lattice Energies and Distortions

    The 2nd Intl. Conf. on Physics of Solid State Ionics  2007 

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  • Melt Synthesis of Oxide Phosphors with K2NiF4 Structures: CaLa1-xEuxGaO4

    ISRS-16  2008 

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  • Direct Patterning of Bariium Titanate Thin Films by Laser Activated Hydrothermal Reactions

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • Direct Patterning of Nano-Structured Ceramics from Solution Differences from Conventional Printing and Lithographic Methods

    32nd International Conference & Exposition on Advanced Ceramics & Compounds  2008 

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  • 高分散フェライトナノ粒子の合成と粒径制御

    粉体粉末冶金協会2007秋季大会  2007 

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  • Synthesis and Characterization of Oxynitride Perovskites LaAON2 (A=Nb, Ta) from Metal Precursors in Supercritical Ammonia

    BMMP8  2008 

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  • Direct Fabrication of Bioactive Ceramic Film on Fe^based Glass from Aqueous Solution

    MRS Fall Meeting  2007 

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  • Fabrication of Oriented BaTiO3 Thin Film by Using Induction Heating in Aqueous Solution

    The Annual Meeting of the Ceramic Society of Japan  2008 

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  • Ferrite Films by a `Low Temperature', `Low Cost', `No Post-Annealing' Spin-Spray Process for High Frequency Applications

    MRS Fall Meeting  2007 

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  • Bioactive Titanate Nano-mesh on Ti-based Bulk Metallic Glass by Using Hydrothermal-Electrochemical Technique

    INC4  2008 

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  • Fabrication of Titanate Nano-mesh on (Ti-Zr-Cu-Pd)Ca Bulk Glassy Alloy by Hydrothermal-Electrochemical Technique

    MRS Fall Meeting  2007 

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  • Powder-less Processing for Ceramics: Direct Fabrication of Nano-Composite Ceramics via Melt-Solidification of Eutectic Melts in Al2O3-R2O3-CaO-HfO2Systems

    PacRim 7  2007 

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  • Patterning of BaTiO3 by Ink-Jet Deposition Using Water-Soluble Precursor

    BMMP8  2008 

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  • Single-Step Patterning of Functional Ceramic Films by Soft Solution Processing Using Ink-Jet Reaction Methods

    PacRim 7  2007 

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  • 水溶性チタン錯体を用いた酸化チタン薄膜の作製と光触媒活性

    日本セラミックス協会 2010年年会  2010 

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  • Fabrication of Bioactive Ceramics Thin Film on Ti-based Bulk Alloys by Using Hydrotherma-Electrochemical Technique

    STAC-JTMC  2007 

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  • Crystallization Behavior of the Eutectic Glass in the C12A7-CaYAlO4 System

    The 2nd Directionally Solidified Eutectic Ceramic Workshop  2006 

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  • インクジェット法を用いたフェライトアルギン酸ビーズの作製

    2010年年会  2010 

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  • Melt Synthesis of Oxide Phosphors with K2NiF4 Structures

    ISRS-16  2007 

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  • 水熱成長によるNaLa(WO4)2:Er3+/Yb3+マイクロ結晶の形態制御及びアップコンバージョン特性

    2010年年会  2010 

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  • Novel Synthesis and Advanced Analytical Method for CeO2-ZrO2 Nanocatalysts with Nanoscale heterogeneities

    2010 

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  • Fabrication of Bioactive Ceramics Thin Film on Ti-based bulk alloys by using hydrothermal-electrochemical technique

    STAC-JTMC  2007 

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  • Ferrite Plating by Spin Spray Technique without Using Any Strong Oxidizing Agents

    2006 MRS Fall Meeting  2006 

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  • Control of Wetting on Ti-based Bulk Metallic Glass Surface

    Tenth International Symposium on Biomimetic Materials Processing (BMMP-10)  2010 

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  • Lattice energy calculation for Formation of Perovskite-type oxide

    STAC-JTMC  2007 

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  • Fabrication of CaTiO3 Thin Film on Ti-Zr-Nb Alloy by Using Hydrothermal-Electrochemical Technique

    MRS Fall Meeting  2006 

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  • Preparation of ZnO Film by Spin-spray Technique using Citrate as a Microstructure-Directing Agent

    Tenth International Symposium on Biomimetic Materials Processing (BMMP-10)  2010 

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  • Upgrading of valuable materials contained in activated sludge

    STAC-JTMC  2007 

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  • Synthesis and Characterization of ZrO2 Nanoparticles by Hydrothermal/Solvothermal Methods Using Ethylene Glycol

    9th Intl. Ceramic Processing Science Symp.  2006 

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  • 水熱法による金属ガラスの表面改質

    日本セラミックス協会 2010年年会  2010 

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  • Mossbauer study of magnetization derection in spin sprayed ferrite films

    The 1st International Symposium on Advanced Magnetic Materials and Applications  2007 

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  • Fabrication and Characterization of Crystalline and Non-crystalline Bulk Nano-Composites Ceramics from Eutectic Melts in Al2O3-R2O3-HfO2 and Al2O3-R2O3-CaO Systems

    The 2nd Directionally Solidified Eutectic Ceramic Workshop  2006 

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  • Multilayered films composed of FeCoB layer and anti-ferromagnetic oxide

    2007 

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  • Ferrite Film Preparation from Aqueous Solution without Post-Annealing, and Application for Noise Suppressors in GHz Range

    Bio-Inspired Synthesis and Materials  2006 

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  • Microstructure Control for Spin-sprayed ZnO Films at 90℃ and their Photocatalytic Activity

    7th International Conference on Inorganic Materials  2010 

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  • Spin-sprayed Ferrite Films with Excellent Heat Resistance by Microstructure Control

    STAC-JTMC  2007 

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  • Surface Activation of Ai-alloy by Hydrothermal-Electrochemical Process for Biocompatible Materials

    Asian BioCeramic Symposium 2006  2006 

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  • 溶液法によるニオブ酸ナトリウム光触媒ガラスの開発

    第48回セラミックス基礎科学討論会  2010 

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  • Bioactive Surface Ceramics Formation on Bulk Alloys and Metallic Glasses by Oxidation of Their Components

    STAC-JTMC  2007 

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  • Ferrite Plating by Spin Spray Technique Using Iron Dextran Complex

    2006 MRS Fall Meeting  2006 

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  • 低環境負荷溶液プロセスによる酸化亜鉛膜の作製及び形態制御

    第48回セラミックス基礎討論会  2010 

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  • Room Temperature Synthesis of Monodispersed CeO2 Nanoparticles by Oleate-precipitation Method

    STAC-JTMC  2007 

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  • Size, Shape and Composition Controllable Synthesis of Ce Based Oxide Nanoparticles by Hydrothermal Method Using Metal Oleic Complex

    2006 MRS Fall Meeting  2006 

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  • Fabrication of Carbon-Encapsulated Magnetic Metal Nanoparticles by High Frequency Arc-Discharge in Various Organic Solvent

    The 30 Annual Conference on Magnetics in Japan  2006 

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  • Patterned CaTiO3 nanostructures prepared by two-step anodization-hydrothermal method

    STAC-4概要集  2010 

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  • Fabrication of C12A7 Composites by Melting /Coating of Eutectic Glass in the System C12A7-CaMAlO4 and C12A7-Ca13Al12Hf2O35

    STAC-JTMC  2007 

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  • Biocompatible Ceramic Coating on Ti and Ti-Alloy by Soft Solution Processing

    ICCCI 2006  2006 

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  • Formation of bioactive titanate nanomesh layer on micro-grooved Ti40Zr10Cu36Pd14 metallic glass by femtosecond laser irradiation

    2010 

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  • Fabrication of Bioactive Thin Film on Fe-based Glassy Alloys via Hydrothermal-Electrochemical Technique

    STAC-JTMC  2007 

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  • CaTiO3 Film Formation on Ti and Ti-Alloy by Electrochemical Process for Hydroxyapatite Deposition

    ICCCI 2006  2006 

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  • Surface Modification on the Bulk Metallic Glass by Hydrothermal Method

    STAC-4概要集  2010 

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  • Spin-sprayed Ferrite Films with Excellent Heat Resistance by Microstructure Control

    SATC-JTMC  2007 

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  • Fabrication of Nano-structured Titanate Layers to Obtain Bioactivity on Ti-based Bulk Metallic Glass

    ISHA 2010  2010 

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  • Novel Synthesis and Advanced Analytical Method for CeO2-ZrO2 Nanocatalysts with Nanoscale heterogeneities

    2010 

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  • A Novel and Simple Process for Ferrite Film Preparation from One Solution without Using Hazardous Oxidizing Agent

    10th Joint MMM/Intermag Conference  2007 

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  • Hydrothermal Preparation of Photocatelyst - Activated Carbon Composite (TiO2/ZnO-AC) and Its Application

    ISHR & ICSTR 2006  2006 

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  • Control of Wetting on Ti-based Bulk Metallic Glass Surface

    Tenth International Symposium on Biomimetic Materials Processing (BMMP-10)  2010 

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  • Preparation and Characterization of Mn-Zn Ferrite Films Having High Resistivity for GHz Conducted Noise Suppressors

    BMMP-7  2007 

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  • NiZaCe Ferrite Films by Spin Spray Technique - Morphology and Magnetic Properties

    ISHR & ICSTR 2006  2006 

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  • Preparation of ZnO Film by Spin-spray Technique using Citrate as a Microstructure-Directing Agent

    Tenth International Symposium on Biomimetic Materials Processing (BMMP-10)  2010 

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  • Fabrication of Bioactive Ceramics Film on β-Ti Alloys by Using Hydrothermal-electrochemical Technique

    The 87th Annual Meeting of the Chemical Society of japan  2007 

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  • Strong Magnetic Loss in GHz Range of Ni-Zn-Co Ferrite Film Prepared from Aqueous Solution

    ISHR & ICSTR 2006  2006 

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  • Photocatalytic activity of ZnO films prepared by spin-spray method

    2010 

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  • Direct Fabrication of Crystalline Ceria Films and Patterns by Ink-jet Deposition at Moderate Temperatures

    1st STAC and 2nd JTMC  2007 

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  • Ferrite Film Preparation by Spraying One Solution

    日本セラミックス協会第19回秋季シンポジウム  2006 

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  • Formation and Properties of CeO2 and (Ce, Gd)O2-x Films by On-Site Ink-Jet and Spray Deposition

    10th ACSSI  2006 

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  • One-Step Fabrication of Functional Ceramic Patterns by Ink-Jet Deposition Method Using Precursor Solutions at Moderate Temperature (>300℃)

    PMP-III  2008 

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  • Synthesis of Ferrite Films from Aqueous Solution and Application for GHz Noise Suppressors

    CIMTEC 2006  2006 

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  • Spin-spray Plated Ferrite Films with Ccontrolling the Crystalline Orientation by Underlayers

    MRS 2008 Fall Meeting  2008 

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  • Ni-Zn ferrite films synthesized from aqueous solution usablefor sheet-type conducted noise suppressors in GHz range

    J Electroceram  2006 

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  • Calcium Titanate and Sodium Titanate Layer on Ti-based Bulk Metallic Glass for Biomedical Application

    2008 

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  • Hydrothermal Synthesis of HfO2- and CeO2- Solid Solution Nanoparticles with High Dispersability by Surface Organic species

    ISHR & ICSTR 2006  2006 

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  • The Study of Photo-induced Hydrophilicity of Photocatalytic Thin Films

    The 26th International Japan-Korea Seminar on Ceramics概要集  2009 

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  • Soft Processing for Ceramics: Single-step Fabrication of Nano-Structured Ceramics (Fioms, Integrated Layers and Patterns) from Solution without Firing

    5th Intl. Conf. on Materials for Advanced Technologies 2009  2009 

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  • Direct Fabrication of Nano-Structured Ceramics from Solution without Post-Firing

    IUMRS-ICAM 2007  2007 

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  • Rational Hydrothermal Route to Functional Metal Oxide Nanoparticles

    5th Intl. Conf. on Materials for Advanced Technologies 2009  2009 

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  • Direct Fabricaiton of Ceramics Nano-Composites via Melt-Solidification of Eutectic Melts in Al2O3-R2O3-HfO2 and Al2O3-R2O3-CaO System

    IUMRS-ICAM 2007  2007 

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  • Formation of Calcium Titanate Layer on Ti-based Bulk Metallic Glass by Hydrothermal-electrochemical Method for Biomedical Application

    5th Intl. Conf. on Materials for Advanced Technologies 2009  2009 

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  • MnZn Ferrite Film Preparation by Spin-Spray Ferrite Plating and Its Application as GHz Conducted Noise Suppressors

    IUMRS-ICAM 2007  2007 

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  • Bioactive Titanate Nano^-Structured Layers on Ti-Based Bulk Metallic Glass by S Hydrothermal-Electrochemical Technique

    The 26th International Japan-Korea Seminar on Ceramics  2009 

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  • Development of Liquid-phase Oxides Coating Process for Functionalizing Material Surfaces

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Awards

  • 文部科学大臣表彰 科学技術賞(研究部門)

    2005   文部科学省  

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    Country:Japan

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  • 手島記念研究賞 発明賞

    2004   東京工業大学  

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    Country:Japan

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  • 優秀講演賞

    2001   日本応用磁気学会  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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  • Best Paper Award

    2000   The 8th International Conference on Ferrite  

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    Award type:Award from international society, conference, symposium, etc. 

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  • Young Researcher Award

    2000   The 8th International Conference on Ferrite  

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  • Young Researcher Award

    1997   International Union on Materials Research Society(IU-MRS)  

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  • 学術奨励講演賞

    1997   表面技術協会  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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Research Projects

  • Ultra-thin glass laminate seal with sub-micron thickness for bio application

    Grant number:18H01720  2018.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\16250000 ( Direct Cost: \12500000 、 Indirect Cost:\3750000 )

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  • Nowvel Synthesis Process of Nanosheet From Metallic Complex Gel

    Grant number:15K13301  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    Matsushita Nobuhiro

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    Grant amount:\4030000 ( Direct Cost: \3100000 、 Indirect Cost:\930000 )

    Novel solution process using oleic metallic complex gel(OGHT) was developed and iron oxide nanocrystal having specific crystal face was synthesized. Quasi two dimensitonal ferrite nanoplates were synthesized by this process and Magnetic Force Microscopy observation revealed that magnetic behavior of ferrite plate was a kind of voirtex.
    Another novel solution process, a kind of co-precipitaion of oriented ions at Liquid-Liquid interface was developed. Co- and Ni- substituted ferrite with the lateral size larger than 2μm was successfully synthesized. It is epoch-making result that transition metal substituted ferrite nanosheet could be sysntesized easily at temperature lower than 80℃.

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  • 3D Conductive Area of Solution-Processed ZnO Layer and Transparent Flexible LED

    Grant number:15H04122  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Matsushita Nobuhiro, Hong Jeongsoo

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    Grant amount:\16250000 ( Direct Cost: \12500000 、 Indirect Cost:\3750000 )

    Solution-processed ZnO films could exhibit transparent conductivity after UV irradiation. The irradiation of UV-A and UV(λ = 380 nm) only for 1 hour attained the conductivity. The transparent circuit was drawn by UV laser irradiation and the conductive are had 3 order lower resistivity than without irradiation area. The rectification property was obtained the ZnO films deposited on p-Si and p-GaN substrate. The Mn doped ZnO film exhibited the saturation magnetization of 1.68x10-2 emu/g.
    It is valuable result that the transparent conductive magnetic ZnO film could be fabricated by solution process.

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  • 機能性無機ナノブロックの配向面・形態・機能の制御

    Grant number:15H00728  2015.4 - 2017.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    松下 伸広

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    Grant amount:\6240000 ( Direct Cost: \4800000 、 Indirect Cost:\1440000 )

    オレイン酸イオンとセリウムイオンのイオン濃度比(Ole/Ce)を調整し、粒径がおよそ十数~数十nmのCeO2ナノブロックを作製した。ブロック表面には{111}面、 {110}面、 {100}面が露出しており、その割合がOle/Ceで変化した。不安定な{100}面にオレイン酸イオンが吸着して成長を抑制する事で{100}面の割合が増えた。セリアブロック同士が配向面を揃えて接合・成長するオリエンテッドアタッチメント(OA)成長も観察され、{111}面同士および{100}面同士がOAすること、{100}同士の接合はイオン濃度比が低い場合に生じることが明らかとなった。イオン濃度比[Ole/Ce]を変えることでセリアブロックの配向面制御のみならず、OA成長によるブロック形状制御もできる可能性が示された
    蛍光特性を示すロッド状CePO4:Tb3+ナノブロックを作製した。シクロヘキサン中で高い分散性を示し、粒径は約3~5 nm、 長さは約20 nmのナノロッド形状をしていること、高分解能TEM像からは格子縞も観察された。同ナノロッドの分散液に254 nmのUVを照射すると発光中心であるTb3+由来の緑色発光が観察された。サンプルの量子収率は約25%と分散性、発光効率のいずれにも優れる蛍光ブロックが作製できた。
    スピネル型フェライトブロックの作製も行った。プロセスの最適化を検討する中で、オレイン酸ゲル水熱成長法(OGHT)を開発した。Fe2+イオンのみを用いて形成したオレイン酸錯体の沈殿物を溶液と分離した後にオレイン酸錯体のみにアンモニア水を滴下後、両者を再度混合したものを水熱するプロセスにより、5~7 nmのキューブ状Fe3O4ブロックを優先成長させることに成功した。

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  • Glass microsphere laser with nanometer- and micrometer-size structure for highly directional emission

    Grant number:15K20993  2015.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    Kishi Tetsuo, YANO Tetsuji, MATSUSHITA Nobuhiro, KUMAGAI Tsutaru, AMAGASA Tomohiro, OHTAKE Mariko, AOYAGI Masakazu

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    Grant amount:\3380000 ( Direct Cost: \2600000 、 Indirect Cost:\780000 )

    Nanometer-size or micrometer-size additional structures were fabricated on glass microspheres. Glass microsphere lasers were made from transparent glass-ceramics containing nano-sized crystals or Faraday rotation glasses by using the Localized-Laser Heating method. Optical resonant properties of microsphere with defects like bubble or grating were analyzed by using electromagnetic simulations such as finite element and finite-differential time-domain methods.

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  • Fabrication of transparent ZnO films by solution process and challenge for fabricating transparent circuit

    Grant number:24360270  2012.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Matsushita Nobuhiro, Wagata Hajime, Katsumata Kenichi

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    Grant amount:\17420000 ( Direct Cost: \13400000 、 Indirect Cost:\4020000 )

    The source solution containing Zn ion and the reaction solution containing NH3 and trisodiumcitrate were sprayed on heated substrate to deposit transparet ZnO film. The deposited film treated by hydrogen treatment prior to UV irradiation exhibited the lowest resistivity of 1.8×10-3 Ω・cm. The transparent conductive ZnO films were successfully fabricated even on plastic substrate(PES), The transparent circuit could be drawn in solution-processed ZnO films by irradiating UV only in restricted area. The utilization of ammine complex enbled to develop a novel solution process in which only one solution was used for depositing transparent conductive ZnO films.

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  • Developing technology for imaging cancer tumors and sentinel lymph nodes utilizing sonic wave emission by magnetically stimulated particles

    Grant number:21240054  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    MATSUSHITA Nobuhiro, HANDA Hiroshi, KITAMOTO Yoshitaka, OGAWA Makoto, MINAMIYA Yoshihiro

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    Grant amount:\46670000 ( Direct Cost: \35900000 、 Indirect Cost:\10770000 )

    In order to apply to sentinel lymph node mapping by emission of acoustic waves by magnetically-stimulated particles, we developed new devices which will enable 3D magnetic particle imaging by using only one microphone. They are(1) Bunny ear Reflector Microphone(BERM) in which a microphone is mounted on a asymmetric position of a reflector and the impulse response of burst acoustic waves propagated directly and reflected by the reflector is analyzed. And(2)"Random Path Holophonic Sensor" in which the impulse response of burst ultrasonic waves propagated through the small apertures distributed randomly(after maximal-length sequences) on a microphone head is analyzed. Simulation experiments confirmed the operation principle of our new devices. We also developed "two-step ligand exchange reaction", by which we successfully synthesized ferrite beads with narrow size distribution ; when their average size was 20 nm they showed strong magneto-acoustic effect and they were accumulated at the first lymph nodes(pseudo sentinel lymph nodes) of a mouse at a high efficiency.

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  • 超GHz帯域用伝導ノイズ抑制体の創成

    Grant number:17686027  2005 - 2007

    日本学術振興会  科学研究費助成事業  若手研究(A)

    松下 伸広

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    Grant amount:\29900000 ( Direct Cost: \23000000 、 Indirect Cost:\6900000 )

    本研究は金属磁性層と酸化物反強磁性層からなる積層膜をGHzを超える帯域用の伝導ノイズ抑制体として応用することを目的としている。高周波領域で優れた特性を得るためには磁性層の異方性を高める必要があるが、平成19年度はNiO/FeCoB積層膜のバイアス磁界を100 0e以上、異方性磁界は2500e以上とすることを目標とした。 NiO反強磁性層とFeCoB層との間で効果的にバイアス磁界を発生するために必要な(111)面を得るために、Ti下地層を用いた。NiO層作製時の基板温度が300℃と高い場合に良好な(111)配向を示し、フィールドクールしたTi/NiO(30 nm)/FeCoB(5 nm)膜において、FeCoB層はバイアス磁界119 0eを示した。これはNiO層を反強磁性層として用いた報告例の中では最高レべルである。一方、異方性磁界についてもTi/NiO(90 nm)/FeCoB(5 nm)膜において、300 0eと極めて高い値が得られた。異方性磁界については、NiO層の堆積温床が高い場合に膜内部の応力が高まる結果としてFeCoB層内部に発生した逆磁気歪み効果の影響で増加することを明らかとした。この300 0eという異方性磁界が飽和磁化18.5 kGのFeCoB層で得られたということは、約7 GHz という極めて高い共鳴周波数を示すことになり、超GHz帯域のノイズ抑制体としての応用が期待される。
    また、今年度は高抵抗酸化物磁性膜であるフェライト膜を磁性層に適用する研究も行い、その結晶性、磁気特性の評価を行った。 NiZnフェライト/NiO積層膜において、NiO層とNiZnフェライト層との間でエピタキシャル的な(111)配向成長が見られ、Ti(30 nm)/NIO(30 nm)/NiZnフェライト(60nm)/NIO(30nm)においてヽ134Oeのバイアス磁界が得られた。

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  • 高耐熱・超薄型GHz電磁ノイズ吸収シートの創製と量産技術の確立

    2004 - 2005

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  • Development of high heat-resistive and very thin GHz conducted noise suppressor sheets and establishments of the mass production technologies

    2004 - 2005

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  • Preparation of Magnetic Nano Beads and Biomedical Application

    2003 - 2006

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    Grant type:Competitive

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  • 磁性ナノビーズの作製とバイオ応用

    2003 - 2006

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    Grant type:Competitive

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  • Fabrication of magnetic nanoparticle-array recording media and their evaluation with probe heads

    Grant number:14350180  2002 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    KITAMOTO Yoshitaka, TANIYAMA Tomoyasu, MATSUSHITA Nobuhiro

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    Grant amount:\17000000 ( Direct Cost: \17000000 )

    The purpose of the present study is to establish fabrication techniques of Fe-Pt nanoparticle-array magnetic recording media and to evaluate their potential to achieve areal recording density over 1 tera-bit per square inch. The results are shown in the followings.
    1) We studied the relationship between chemical ordering and magnetic anisotropy for powder samples of Fe-Pt nanoparticles, and found that a volume ratio Q of ordered alloy phase evaluated with Mossbauer spectroscopy was a useful parameter to evaluate the chemical ordering. Whereas Q is a parameter for short-range ordering, S obtained from X-ray diffractometry is a parameter for long-range ordering. Magnetic anisotropy was evaluated with the maximum magnetic field of 90 kOe. Distribution of magnetic anisotropy-field H_k for partially ordered Fe-Pt nanoparticles was much broader than that for almost fully ordered Fe-Pt nanoparticles, and the low H_k components were included with a high volume ratio.
    2) Partially ordered Fe-Pt nanoparticles were successfully obtained with polyol reduction method of Fe and Pt salts by using microwave irradiation without any post-synthesis heat-treatment. The Fe-Pt nanoparticles synthesized at 250℃ with microwave irradiation exhibited volume ratio for ordered alloy phase of 60% and magnetic anisotropy field over 80 kOe.
    3) Mixing saturated fatty acid (C_nH_<2n> O_2) molecules to an Fe-Pt nanoparticle suspension assisted the formation of a nanoparticle monolayer on pure water surface without coagulation. Because the surface of the Fe-Pt nanoparticles is hydrophobic, interface energy with water surface is high. The fatty acid molecules probably reduced the interface energy as a buffer layer between the Fe-Pt nanoparticle-monolayer and water surface. Fatty acid molecules with n 【greater than or equal】 14 were effective for the formation, and the best one in view of the formation of regular nanoparticle-array was the molecule with n = 14.
    4) Carbon overcoats deposited with sputtering on Fe-Pt nanoparticle assembly-films successfully prevented the assembly-films from inter-particle sintering. Fe-Pt nanoparticles of 4-5 nm in diameter were kept isolated physically and were chemically ordered after an optimum heat-treatment. However, higher temperature and longer time for the heat treatment were required to achieve proper chemical ordering to fit a specification of high-density recording media for future recording system. Fe-Pt nanoparticle assembly-films with a carbon overcoat annealed under the optimum conditions exhibited that the particle size was 4-5 nm and magnetic anisotropy constant was 4.8x10^7 erg/cm^3.

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  • フェライトめっき膜による次世代モバイル機器用電波吸収層の開発と高広帯域化

    Grant number:14750227  2002 - 2003

    日本学術振興会  科学研究費助成事業  若手研究(B)

    松下 伸広

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    Grant amount:\3400000 ( Direct Cost: \3400000 )

    Ni-Zn-Coフェライト磁性層をZnO中間層で挟んだ積層構造の伝導ノイズ抑制体を開発する予定であったが、積層膜の磁気特性や高周波透磁率特性を考慮した結果、単層膜によるノイズ吸収特性の高能率化ならびに高広帯域化を更に進めることにした。高能率化のためのMn^<2+>置換、高能率化と広帯域化の両立の為のCo^<2+>置換を、昨年度備品で導入した溶液マスフローコントローラにより精密に行った。Mn^<2+>置換では際だった特性改善に至らなかったが、Co^<2+>置換では、膜組成をNi_xZn_yCo_zFe_<3-x-y-z>O_4すると、高能率化を図る目的のz=0.035において、200MHzから3GHzと極めて広い周波数帯域で虚数透磁率がμ_r">30と高い膜の作製に成功した。また、高帯域化を図るためにz>0.1とした膜では、強磁性共鳴周波数f_rが1GHzを超えた。これらの作製条件を元にNi-Zn-Coフェライト膜をプリント基板上に堆積したところ、平坦なガラス基板上の膜と比べるとμ_r'=15〜30程度と透磁率が減少するも、f_r=800MHz〜2GHzと広帯域化し、3GHzを超えるものも作製可能であった。そこで2〜10μmの膜をプリント基板上のマイクロストリップラインに直接堆積して伝導ノイズ抑制効果を評価すると、わずか3μm厚のNi-Zn-Coフェラィト膜でも5GHzにおけるノイズ吸収特性特性ΔP_<loss>が60〜70%と市販されているシート型のノイズ抑制体(50μm)の30%の倍以上と、膜厚あたりの吸収能率としては30倍以上の特性を得ることができた。反射特性S_<11>も-10dB以下と市販品と同程度かそれ以下であり、極めて優れたGHz帯域伝導ノイズ抑制体の作製に成功した。
    本研究は上述の様に当初の目的を達成した以外に、フェライトめっき膜はその複雑な磁区構造から残留磁化状態によって透磁率値や周波数スペクトルの形状が変化するものの伝送信号損失には影響を与えないことや、低周波領域でも磁壁が殆ど動かず、透磁率はスピンからの寄与のみによることを確認し、フェライトめっき膜が高周波領域で優れた透磁率特性を得る仕組みを明かとした。

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  • フェライト/磁性金属複合コアの作製

    2001 - 2003

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    Grant type:Competitive

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  • Ferrite/Metal Composite Magnetic Core

    2001 - 2003

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    Grant type:Competitive

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  • Improvement of anomalous Hall effect of ferromagnetic thin films with perpendicular magnetization and its application to integrated non-volatile memory

    Grant number:12450143  2000 - 2001

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    NAKAGAWA Shigeki, MATSUSHITA Nobuhiro

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    Grant amount:\12800000 ( Direct Cost: \12800000 )

    In this research, a ferromagnetic Hall effect of very thin film with perpendicular magnetic anisotropy were observed aiming for their application to non-volatic memory cells. An anomalous Hall effect (AHE) and a planar Hall effect (PHE) represent a perpendicular component and an in-plane component of the magnetization in the double-layered media. Since AHE and PHE have different symmetries regarding to the applied magnetic field H, it is easy to distinguish the AHE component, which is proportional to M, and PHE component, which is proportional to M^2, from the measured Hall voltage V_H. The Hall voltage of the double-layered film composed of Co-Cr-Ta and Ni-Fe layers was observed when the magnetic field is applied at a certain angle from the normal to the film plane. The observed V_H-H characteristics are regarded as a sum of Hall voltage outputs of PHE and AHE. The perpendicular and the in-plane components, which are regarded as the magnetization process of Co-Cr-Ta and that of Ni-Fe layer, respectively, can be easily determined from these characteristics. The Hall measurement is useful to study the magnetization characteristics in the double-layered media in perpendicular magnetic recording system. Furthermore, A new method for evaluating magnetic interaction among the particles in perpendicular magnetic recording layers under canted magnetic field have been proposed using Anomalous Hall measurement and VSM measurement. These results were very convenient to design Hall memory cells proposed in this project.

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  • 完全鏡面散乱反強磁性酸化物層を用いたスピンバルブセンサーの高感度化

    Grant number:12750262  2000 - 2001

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    松下 伸広

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    Grant amount:\2500000 ( Direct Cost: \2500000 )

    昨年度の追試実験よりCo/Cu多層膜の巨大磁気抵抗特性のばらつきは、膜の表面平坦性に関係することが示されたので、Cuバッファー層厚を5〜15nmと変えて特性評価を行った。Cuバッファー層の表面平均荒さが0.15から0.25nmと増加するに従い、磁気抵抗変化率MR ratioが4.5から0.5%と急激に減少した。Cuバッファー層中の酸素含有量が膜厚に伴って増加し、これが平坦性を劣化させ、巨大磁気抵抗効果を損なう原因であることが明らかとなった。次にα-Fe_2O_3層のバイアス特性を調べるためにNiFe層との積層膜を作製した。Si/α-Fc_2O_3(50nm)/NiFe(5nm)二層膜においてはバイアス磁界H_<ex>=63Oe、保磁力H_c=138Oeであったが、Si/NiFe(5nm)/α-Fe_2O_3(50nm)二層膜でH_<ex>=5Oe、保磁力H_c=10Oeと著しくバイアス特性が劣化した。これはSi基板上に直接堆積したα-Fe_2O_3層の結晶性が優れるごとに加えてNiFe層との界面で平坦性に優れることが理由と考えられた。以上を基にスピンバルブ(Si/α-Fe_2O_3/(NiFe, Co)/Cu/(NiFe, Co)を作製した。NiFe層を用いたサンプルではMR ratio=5%とCo層を用いたサンプルのMR ratio=16%に比べて巨大磁気抵抗率は小さいものの、磁界感度は0.6%/OeとCo層を用いたサンプルの0.3%/Oeより優れていた。このスピンバルブにおいても表面平坦性が1.4nmから0.8nmへと減少するに従い、MR ratioが増加する傾向が見られた。本研究により酸化物反強磁性層を用いたスピンバルブ素子で大きなMR ratioおよび優れ磁界感度を得るためには反強磁性層の結晶性や膜面平坦性の向上が極めて重要であることが明らかとなった。

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  • Large capacity and high-speed random access memory devices using spin polarized electron tunneling current

    Grant number:09305024  1997 - 1999

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    NAOE Masahiko, MATSUSHITA Nobuhiro, KANEDA Kumiko, NAKAGAWA Shigeki

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    Grant amount:\28900000 ( Direct Cost: \28900000 )

    In this research, the Si/Ni-Fe composite underlayers were examined in order to improve the crystallinity and exchange bias characteristics of a reverse type of exchange coupled layers. Si underlayer promoted the formation of (111) texture of fcc crystallites in the Ni-Fe layer deposited on it. FeMn layer deposited on the Si/Ni-Fe bilayered underlayer revealed excellent (111) texture of fcc crystallites. The multilayered film with Si underlayer exhibited large exchange coupling field HィイD2ex.ィエD2 to the Ni-Fe films deposited on it after post-annealing process. It was found that HィイD2ex.1ィエD2 of the film with 50AィイD4oィエD4-thick Si underlayer took large value of about 300 Oe. Si/Ni-Fe composite underlayer improved crystallinity and (111) texture of the FeMn layer deposited on it, and sufficiently high HィイD2ex.ィエD2 could be applied to the upper Ni-Fe layer in a reverse type of exchange coupled layers by post-annealing in magnetic field.
    Co(15AィイD4oィエD4)/Cu(23AィイD4oィエD4) GMR (Giant Magneto-resistance) multilayers deposited on a-Si underlayer revealed exceedingly good crystallinity and on Ni-Fe underlayer revealed good periodicity and cleaness of interface. Annealing process varied these characteristic each other, and MR characteristics were changed on concerned with crystallographic characteristics. In the multilayers with Si underlayer, annealing at 250C improve the periodicity and the clearness at the interface, and the value of MR ratio was enhanced till 17.1%. Tunneling current characteristics were also observed in Ni-Fe/SiN/NiFe trilayered structure deposited on an a-Si underlayer.

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  • Xeを用いた原子層スパッタ堆積法によるW型およびZ型Baフェライト薄膜の創製

    Grant number:09750344  1997 - 1998

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    松下 伸広

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    Grant amount:\2100000 ( Direct Cost: \2100000 )

    昨年度にBaO・n(Fe_2O_3)の組成においてn=6.5とM型BaフェライトよりもFe組成が多めのターゲットからXe混合ガス中でBaフェライト薄膜を堆積したところ、飽和磁化が5.1kGとM型のバルク値の4.8kGよりも大きくなり、微細なW型フェライト結晶子が成長している可能性が示唆された。そこで、n=7.5、8.5およびW型フェライトと同じn=9.0の焼結ターゲットを用いて膜堆積を行ったが、X線回折の結果からは、いずれの場合もより安定なM型結晶子が優先成長し、W型およびZ型のBaフェライト結晶子の存在を確認するには至らなかった。また、SブロックおよびRブロックに相当する組成のターゲットから交互堆積を行った場合も、M型バリウムフェライトおよびスピネルフェライトの結晶子からの回折ピークのみが観察された。そこで、このM型Baフェライト膜の高密度磁気記録層への応用を図った。まず、エピタキシャル下地層としてこれまで用いていたZnO(001)層に代えて、表面熱酸化SiO_2層、Au(111)層、Pt(111)層を検討した。この結果、Pt(111)下地層は熱処理なしでもc軸配向したBaフェライト膜が500℃以上の基板温度で形成できる上に、界面拡散がきわめて少なく、飽和磁化や垂直保磁力等の磁気特性にも優れており、これらの中では最適であると判断した。このPt(111)下地層上にBaフェライト層を堆積したディスクサンプルの記録再生特性を複合型MRヘッド(ライトギャップ0.3μm、リード幅0.2μm)を用いて評価したところ、孤立再生波形からも完全な垂直磁化モードで記録されていることを確認するとともに高い線記録密度D_<50>=130kfrpiが達成されたが、ノイズレベルが現行のハードディスクに用いられているCo-Cr/Cr合金系薄膜と比べると高かった。表面平滑性の向上とともに、結晶子の成長抑制や粒子間相互作用の減少により低ノイズ化を進めれば、さらなる高密度記録にも十分対応できると考えられた。

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  • Development of sharpened fiber probe head and its application to nano-size magnetic recording system

    Grant number:09450140  1997 - 1998

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    NAKAGAWA Shigeki, MATSUSHITA Nobuhiro, KANETA Kumiko

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    Grant amount:\13400000 ( Direct Cost: \13400000 )

    In this research, a new type of both reading and writing single pole heads using ultra sharpened optical fiber probes were proposed. The ultra sharpened fiber probe coated with soft magnetic thin film and wound around by an exiting coil was proposed as writing head. A finite integration element (FIM) method clarified that the core of soft magnetic material, such as soft ferrite, which covers the fiber probe head, played an important role to enhance the magnetic field generated by the head. The magnetic field became eight times as large as that of the case without soft magnetic core. It is predicted that this kind of probe head with soft magnetic core can write the magnetic domains in the medium at high resolution. The probe head covered with magneto-optical sensing layer was used as read-out head. Since the recorded pattern will be transcribed into the magnet-optical sensing layer on the probe tip, the incident polarized light passed through fiber core will interact with the sensing layer. The detection will be performed to read out the Kerr rotation angle of the reflected light at the another edge of the fiber. Although there are many problems to be solved in this system, this type of heads can be one of the candidates for ultra high density magnetic recording in the future.

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  • Development of Observation Method of Fine Magnetic Domains using Spin Polarized Electron Detection Probe

    Grant number:07650360  1995 - 1996

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    NAKAGAWA Shigeki, MATSUSHITA Nobuhiro

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    Grant amount:\2500000 ( Direct Cost: \2500000 )

    In this research, it is extremely important to develop the probe needle to detect spin polarization of electrons in the magnetic domains in magnetic materials, such as magnetic thin film media used in magnetic recording system especially in perpendicular magnetic recording system. These probe needle were fabricated using photo lithography technique. Firstly, substrates were coated with photoresist (OFPR) layrs and sputtered-Al films were deposited on it. Micro holes with its diameter around several mum were fabricated in the Al layrs by also photolithography technique. Photoresist under the hole were eliminated by the plasma ashing method using Oxygen mixture plasma. The probe will be formed when the sputtered particles through the hole are deposited on the substrate. We clarified that the relationship between aspect ratio, which defined as the diameter of the hole and the thickness of the photoresist layr, and the probe profiles by using Monte-Carlo simulation technique. Small aspect ratio resulted in the sharp profile of the deposited probe needles. Spin tunneling phenomena is one of the key point of this research, because the probe has to detect the spin polarization of the electrons which comes from the magnetic domains in the objective materials to the probe needle through an tunneling effect. In order to clarify the spin tunneling effect, spin valve devices composed of Ni-Fe/Si_3N_4/Ni-Fe sandwiched layrs with Fe-Mn antiferromagnetic bias layrs. It was succesfully observed the spin tunneling spin valve characteristic in these devices.

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  • Development of Observation Method of Fine Magnetic Domains using Spin Polarized Electron Detection Probe

    Grant number:07650360  1995 - 1996

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    NAKAGAWA Shigeki, MATSUSHITA Nobuhiro

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    Grant amount:\2500000 ( Direct Cost: \2500000 )

    In this research, it is extremely important to develop the probe needle to detect spin polarization of electrons in the magnetic domains in magnetic materials, such as magnetic thin film media used in magnetic recording system especially in perpendicular magnetic recording system. These probe needle were fabricated using photo lithography technique. Firstly, substrates were coated with photoresist (OFPR) layrs and sputtered-Al films were deposited on it. Micro holes with its diameter around several mum were fabricated in the Al layrs by also photolithography technique. Photoresist under the hole were eliminated by the plasma ashing method using Oxygen mixture plasma. The probe will be formed when the sputtered particles through the hole are deposited on the substrate. We clarified that the relationship between aspect ratio, which defined as the diameter of the hole and the thickness of the photoresist layr, and the probe profiles by using Monte-Carlo simulation technique. Small aspect ratio resulted in the sharp profile of the deposited probe needles. Spin tunneling phenomena is one of the key point of this research, because the probe has to detect the spin polarization of the electrons which comes from the magnetic domains in the objective materials to the probe needle through an tunneling effect. In order to clarify the spin tunneling effect, spin valve devices composed of Ni-Fe/Si_3N_4/Ni-Fe sandwiched layrs with Fe-Mn antiferromagnetic bias layrs. It was succesfully observed the spin tunneling spin valve characteristic in these devices.

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  • 重希ガスを用いたスパッタ法によるBaフェライト薄膜のイオン分布制御と特性向上

    Grant number:07750342  1995

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    松下 伸広

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    Grant amount:\1100000 ( Direct Cost: \1100000 )

    Baフェライトは優れた磁気的特性を有しながらも高い作製温度が必要であること、表面平滑性に問題があること等から、磁気記録薄膜媒体として応用することは困難であるとされてきた。そこで本研究では重希ガス含んだ混合ガス中でスパッタすることで、低基板温度で良好な磁気特性および表面平滑性を有するBaフェライト膜の作製を目指した。薄膜試料の作製には対向ターゲット式スパッタ法を用いた。まず、表面熱酸化Si(SiO_x/Si)基板上に約2000Å程度のZnO下地層を形成し、その上にXe、ArおよびO_2の混合ガス中で組成がBaO・6.5(Fe_2O_3)とFeが多めに含まれたターゲットからBaフェライト薄膜の堆積を行った。
    まず、基板温度を十分な結晶化が得られると考えられた600℃一定、全ガス圧力を0.2Pa一定として、Xe,Arのそれぞれの分圧力を変化させることで、混合ガス比の最適化を測った。Xe分圧力が0.1Paにおいて、最も優れた結晶性のみならず、飽和磁化4πM_Sも5.1kGとバルクのBaMフェライトの4.8kGより大きな値となり、保磁力および垂直異方性定数もそれぞれ約2.0kOe、4.23x10^5J・m^3と高密度の垂直磁気記録に適した良好な値が得られた。
    次に基板温度を600→550→475→450℃と減少させていったところ、475℃とこれまで報告された中では最低の基板温度においても、良好なc軸配向性が確認された。このときに、飽和磁化4πM_Sが4.7kGとバルク並であるばかりでなく、垂直および面内保磁力がそれぞれ2.35および0.19kOeと優れた垂直磁気異方性が確認された。さらに膜の表面状態をScanning Electron Microsopy(SEM)およびAtomic Force Microscopy(AFM)で確認したところ、非常に平滑な膜面であることが確認され、中心線平均粗さR_aにして8.3nmと酸化物薄膜としては極めて良好な値であることが分かった。
    以上の様に本研究で提案されたBaフェライト薄膜の作製方法は、バルクを越える飽和磁化を有する薄膜の形成を可能としたばかりでなく、これまでの作製温度の低限と考えられていた500℃よりもさらに低い温度で良好な形態学的・結晶学的・磁気的特性を有するBaフェライト薄膜を作製することに成功した。

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  • Development of Spin Valve type of Static Memory Devices using GMR Effect

    Grant number:06452213  1994 - 1995

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for General Scientific Research (B)

    NAOE Masahiko, MATSUSHITA Nobuhiro, NAKAGAWA Shigeki

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    Grant amount:\7500000 ( Direct Cost: \7500000 )

    The giant magnetic multilayrs composed of Ni-Fe and Cu layrs whose thickness were from 10 to 35 A each were deposited on Fe buffer layr by using the dual ion beam sputtering apparatus. Assist ions were radiated to the interfaces between Ni-Fe and Cu layr and the change of giant magneto-resistance (GMR) effect on sub ion assist voltage V_<sub> from 0 to 350 V was investigated. Although the amplitude of magneto-resistivity (MR) ratio was slightly decreased, the field sensitivity of magneto-resistance was fairly improved by ion assist radiation and took the maximum value at V_<sub> of 160 V.
    Since Fe-Mn layr, which is commonly deposited on top of the multilayrs and used for applying exchange bias field, has poor corrosion resistivity and is easily to be oxidezed, we proposed the reversed type spin valve structure, in which FeMn layr is deposited on substrate directly and Ni-Fe/Cu/Ni-Fe layrs was deposited on it. We succeeded to deposit FeMn layr with (111) orientation by deposited on Ni-Fe layr with well (111) orientation and ion-assist radiation. Ni-Fe/Cu/Ni-Fe layrs deposited on FeMn layr with (111) orientation possessed relatively well MR ratio and excellent field sensitivity. The exchange bias field of about 20 Oe was achieved in this type of multilayrs and it worked as spin valve device.
    It seemed that the spin valve multilayrs deposited in this study has possibility to be applied as static memory device by using lithographic technology.

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  • フッ素置換による六方晶バリウムフェライト薄膜の作製と磁気光学特性の向上

    Grant number:06750307  1994

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    松下 伸広

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    Grant amount:\900000 ( Direct Cost: \900000 )

    薄膜形成に先立ち、直径2cm、厚さ5mmのペレットを焼結し、これを粉砕した粉末においてX線回折像およびヒステリシスループの測定を行ったところNi^<2+>で置換を行ったペレットにおいて置換量の増加に伴って、異方性が減少し、保磁力および残留磁化比の減少が観察された。一方、薄膜形成においては、原料に用いたCuF_2,NiF_2,CoF_2の純度が低かったこと、ターゲット作製条件の最適化に手間取ったこと、置換により結晶化温度が上昇したこと等の理由により、優れた結晶性や磁気特性をもつ膜の作製が困難であった。そこでBaF_2を原料として用いてO^<2->の5%をF^-で置換した焼結体ターゲットを作製し、対向ターゲット式スパッタ法により薄膜を形成した。スパッタガスには一般的に用いられるArとO_2に加えてXeを加えた混合ガスを用いることで、良好な結晶学的・磁気的特性を持ったBaMフェライト薄膜の作製を目指した。基板温度は600℃一定とし、ガス圧は本研究費にて備品として購入したマスフローコントローラにより、全ガス圧0.2Pa一定,O_2ガス圧0.02Pa一定とし、Xeガス分圧を0〜0.18Pa、Arガス分圧を0.18〜0Paと変えて膜作製を行った。エピタキシャル用下地層としてZnO層約2000Åを基板温度300℃、Ar分圧0.1Pa、O_2分圧0.1Paの混合ガス中で、表面熱酸化Si基板上に堆積した。
    Xe分圧の増加とともに(008)ピークよりsherrerの式により算出した結晶子サイズ<D>は増加し、c軸分散度Δθ_<50>は減少して、Xe分圧0.15Paにおいて、<D>は23.84nm、Δθ_<50>は約3.8°と最も小さく良好な結晶特性が達成された。磁気特性に関しては、飽和磁化はXe分圧0.1Paにおいて最大値3.6kGとさほど大きな値は得られず、保磁力もXe分圧に関わらず垂直・面内両保磁力H_<c⊥>とH_<c〃>が2.5kOe以上および0.3〜0.4kOe程度と予想された保磁力の低下は起こらなかった。さらに、ヒステリシスループより求めた実効異方性磁界H_<k(eff.)>が7.5kOeとフッ素置換を行ったことで逆に若干大きくなった。H_<c⊥>やH_<k(eff.)>結晶子サイズの増加によっても減少するが、フッ素置換を行った膜の方が、概して結晶子サイズは小さくなっており、今後さらにサンプルを作製して、検討する必要がある点である。ただし、本研究から得られた結果から、F^-の置換が飽和磁化、保磁力および結晶磁気異方性に変化を与えることが判明し、フッ素置換がBaフェライト膜の磁気特性制御の点からも有効な一手法であることが確認できた。

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  • 光モード変換器用透明ガ-ネット型フェライトと強誘電性のタンタルの積層膜の作製

    Grant number:05750282  1993

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    松下 伸広

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    Grant amount:\900000 ( Direct Cost: \900000 )

    ビスマス置換ガ-ネット薄膜の結晶性の向上および優れた誘電特性・高屈折率の五酸化タンタル膜との積層膜の作製を目的としたが、高屈折率層は格子整合に優れたフッ化バリウム層を用いることとした。対向ターゲット式スパッタ装置に酸素ガス導入口を増設し、アルゴン・酸素流量をマスフローコントローラで、基板温度をヒ-タに流す電流値をフィードバックすることで、それぞれ自動制御が行なえるようにした。ターゲットは99.99%以上の高純度のgamma-Fe_2O_3、Y_2O_3、Bi_2O_3の各粉末を50:27:3の割合で混合し、ハンドミル・ボールミル・仮焼結・プレス成形後、790℃、4時間の本焼結を行った後に水素雰囲気中700℃で2時間還元処理を行ったものを用いた。各種作製条件を変えてGGG単結晶基板上で堆積したところ、基板温度の上昇と共にBiが抜けて格子定数が小さくなること、酸化剤N_2Oガスの基板への吹付けは効果が見られないこと、プラズマにさらされると結晶性が劣化すること等の知見を得た。酸素分圧比10%、投入電力50W、プラズマ中心から基板までの距離7cmとすると450℃という低基板温度で、結晶軸分散角度が0.045°と結晶性が極めて優れた膜の作製に成功し、RHEED観察により、ほぼ単結晶と見なせることを確認できた。次にSi基板に蒸着したフッ化バリウム層上にガ-ネット層を堆積したが、エピタキシャル成長は見られなかった。これは、フッ化バリウムが蒸着膜であるため、基板温度を上げたときに剥離してしまったこと等が理由と考えられ、フッ化バリウム層のスパッタ法による作製技術の確立およびフッ化バリウム層上でのガ-ネット膜作製条件の最適化が必要であることが分かった。いずれにしても本研究では、450℃という極めて低い基板温度で、光集積回路光モード変換器の実現に大きく寄与できるプロセスを達成できた。

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  • Development of Dual Track Complimentary type recording heads and its Application to High Density Perpendicular Magnetic Recording System

    Grant number:04555065  1992 - 1993

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Developmental Scientific Research (B)

    NAOE Masahiko, MATSUSHITA Nobuhiro, NAKAGAWA Shigeki

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    Grant amount:\9800000 ( Direct Cost: \9800000 )

    We proposed the dual track complimentary type of thin film recording head as a new concept to improve the efficiency of the read/write characteristics in perpendicular magnetic recording system. Since the proposed head has a magnetic core layr with its shape of character 'U', closed circuit of magnetic flux will be attained in the recording system. In order to realize the thin film heads, we have to investigate a soft magnetic thin film for a core layr of the heads, magneto-resistive heads with good soft magnetism for read out system of recorded signal and micro-fabrication technology, such as lithography techniques, for fabrication of thin film heads. For soft magnetic layrs, Fe_xN films prepared by Ion Beam Deposition method, which is investigated by the authors, revealed a soft magnetism with sufficiently large saturation magnetization 4piM_s of about 19 kG, coercivity H_c as low as about 1.0 Oe and relative permeability mu_r of as large as 1000. These results were regarded as sufficient for magnetic core layrs of the new type thin film heads. Although the giant magneto-resistivity observed in the multilayrrs composed of magnetic and non-magnetic metal layrs were very attractive for the application of the MR heads, the magnetic field sensitivity of them is too low to apply them to MR heads. We have investigate that the Ni-Fe/Cu multilayrs prepared by Ion Beam Sputtering technique exhibit relatively large MR ratio of about 16% at room temperature and the multilayr has an relatively soft magnetism, that is, low H_c of about 5 Oe and high mu_r of about 500. It was investigated that the field sensitivity DELTAMR/DELTAH of the multilayrs were controrable by ajusting the crystallites orientation of Fe-buffer layrs. (100) orientation of crystallites in Fe-buffer layrs enhance the (100) orientation of fcc crystallites in Ni-Fe/Cu multilayrs because of a heteroepitaxial effect. Ni-Fe/Cu multilayrs deposited on (100) oriented Fe-b

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  • Preparation of Epitaxially Growned Multilays Composed of Ferrimagnetic Layers and Ferrodielectric Ones and Their Application for Optical Wave Guide Devices

    Grant number:03452151  1991 - 1992

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for General Scientific Research (B)

    NAOE Masahiko, MATSUSHITA Nobuhiro, NAKAGAWA Shigeki

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    Grant amount:\6900000 ( Direct Cost: \6900000 )

    Artificial multilayers composed of ferrimagnetic layers and ferrodielectric ones with periodic structure possesses any characteristics of each layers and moreover, some novel effects, such as momentum one at interfaces and remarkable improvement of kerr and Faraday rotation angle are also expected.
    This study aimed at the development of a new type sputtering apparatus for the preparation of oxide multilayers without diffusions at interface and difference of compositions between targets and each layers as well as the establishment of the process for the oxide multilayers. With respect to the development of sputtering apparatus, the purpose was perfectly achieved. Two facing target sputtering units were mounted on the chamber to prepare the oxide multilayers and therefore, periodic alternative deposition of each ultra-thin oxide layers was achieved. The films deposited from BaFe_<12>O_<19>(BaM) targets on SiO_x/Si substrates had excellent c-axis orientation. Two type of underlayers, ZnO and CoFe_2O_4(CoS), were also prepared to make c-axis orientation of BaM ferrite layer perfect and to increase the perpendicular magnetic anisotropy of it. Some multilayered films composed of BaM, CoS and ZnO layers were prepared changing each parameters such as working gas pressure, partial oxygen pressure and substrate temperature and then, their micro structure and magnetic characteristics were investigated. Consequently, it was achieved to establish excellent process in the preparation of BaM and CoS ferrite films. Although it has been difficult to prepare ultra-thin multilayers for conventional sputtering technologies because the composition difference between targets and films was easy to occur and interfaces between each layers were likely to be disordered, it was achieved by using a new type sputtering method which was developed in this study to prepare oxide multilayers composed of different crystal structures even with ultra-thin layer thickness less than 100 A^^゜.
    From there results, it also seemed that the preparation of multilayered films composed BaM and BaTiO_3 layers was possible.

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  • イオンビ-ムスパッタ法によるREーTM系金属間化合物人工格子型巨大磁歪膜の材製

    Grant number:03240214  1991

    日本学術振興会  科学研究費助成事業  重点領域研究

    直江 正彦, 松下 伸広, 中川 茂樹

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    Grant amount:\2500000 ( Direct Cost: \2500000 )

    人工的に二種の希土類ー鉄属遷移金属(REーTM)の金属間化合物を数nm〜数μmの一定周期で層状に積み重ねた構造を持つ多層膜はそれらの単体膜とは異なった磁気特性を示すのみならず、層境界での相互作用による磁気異方性や電気機械結合力の飛躍的増大が期待できる。これまでのスパッタ技術では層境界を乱さず、極薄層を多数積み上げることは難しいが、デュアル・イオンビ-ム式スパッタ法はそれらが可能となるので上述の機能を引き出せる有力な方法として注目される。本研究では、二種の極薄層を交互に堆積を繰り返して、層境界の乱れがみられない人工格子型膜を作製できる二種の複合タ-ゲット取り付ケスパッタ装置を試作し、これを用いてFeを主材料とした薄膜を形成する基礎実験を行った。本年度では希土類と同様に活性度の高い金属元素であるAlやMnを多層膜構成材料として使用し、Fe系多層膜の構成して、その結晶性や磁気特性等の諸特性に与える層厚や層周期の依存性を調べた。例えば、FeとAlの多層膜においては、Al中間層の厚さが15A^^0以上になると軟磁気特性が向上する。そのときに膜中に磁気異方性が現れ、結晶面間隔のずれが中間層厚に比例しなくなることからこの層厚以上で上下間のFe層の結晶子が独自に成長するものと考えられる。また、通常、金属・合金のスパッタに用いられるArガスに変えて、Krガスを用い、Fe層の結晶性が向上した。これは、タ-ゲット原子よりも重い元素でスパッタしたことによりスパッタ粒子のエネルギ-が増加したことと、タ-ゲット表面からの反跳原子が少なくなったことが原因と思われ、今後、希土類元素等の重元素のスパッタを行なう際に配慮すべき重要な点と考えられた。これらをはじめ、本研究によりREーTM系の金属間化合物人工格子を作製する際の有力な知見を得ることができた。

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  • フェライトめっき法による薄膜作製

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    Grant type:Competitive

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  • Thin Film Preparation by Ferrite Plating

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    Grant type:Competitive

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