Updated on 2025/07/04

写真a

 
KOIKE Kunihiro
 
Date of Birth
1967
Profile
Kunihiro Koike graduated from the Department of Mechanical Engineering at the Faculty of Engineering at Yamagata University. He then went on to study at the Graduate School of Engineering at Yamagata University, where he researched the magnetic properties of nanocrystalline soft magnetic thin films. After obtaining his master's degree in 1992, he worked as an research associate at the Faculty of Engineering at Yamagata University, where he investigated the formation and magnetic properties of granular thin film media using vacuum thin film processes, as well as the transport properties of 3d transition metal-based magnetic phase transition materials, oxide superconducting thin films, and organic/metal hybrid thin films. In 2005, he received his doctorate from the Graduate School of Science and Engineering at Yamagata University. In 2007, he became an assistant professor at Yamagata University and was involved in research into the magnetic properties and interface states of rare earth (RE) overlayer and Nd-Fe-B thin films. In 2010, he became an associate professor at Yamagata University, he studied the formation of model magnets using ultra-high vacuum thin film processes and computational simulations to investigate the theoretical limits of the magnetic properties of oxide nanoparticles and rare earth permanent magnets. In 2025, he became a professor at Yamagata University, and he continues to work towards the formation of high-performance rare earth permanent magnets, while also engaging in basic research to realize a 3D printer for the formation of micro permanent magnets with a view to medical engineering applications.

Research Areas

  • Nanotechnology/Materials / Metallic material properties

  • Nanotechnology/Materials / Structural materials and functional materials

  • Nanotechnology/Materials / Nanomaterials

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

Graduating School

  • Nagaoka National College of Technology, Faculty of Engineering, mechanical engineering course

    1987.03, Graduated

  • Yamagata University, Faculty of Engineering

    1990.03, Graduated

Graduate School

  • Yamagata University, Graduate School, Division of Engineering

    Master's Course, 1992.03, Completed

Degree

  • ph.D. (Engineering), Yamagata University, 2005.09

 

Research Career

  • Microstructure and magnetism of the nano-composite materials, 2006.04 -

  • HIgh coercivity by RE overlayer/Nd-Fe-B interface model and , 2006.10 -

    coercivity, Nd-Fe-B, Rare earth, interface

  • Magnetism and transport properties of Heusler type shape memory alloy films, 2003.03 - 2008.03

    Heusler alloy, magnetism, magneto-resistance effect, martensitic transformation

  • magnetic anisotropy of ferromagnetic alloys/noble-metal mutilayers, 2004.03 - 2011.03

    magnetic anisotropy, rare-earth, ferromagnetic alloys, noble-metal, mutilayers

  • Study of dynamical magnetization phenomena for Co based alloys/noble metal multilayers , 2006.04 - 2008.03

    dynamical magnetization, Co based alloys, noble metal, multilayers,FMR

  • Development of the high coercivity rare-earth Nd-Fe-B sintered magnets , 2006.10 - 2008.03

    high field processing, high coercivity, rare-earth magnets

  • Magnetic properties of Co-Cr multilayered film with ultra thin interlayer., 1993.04 - 2005.03

    multilayered film

  • Study on ferro magnetic granular thin films., 1995.04 - 2004.03

    granular thin film

  • Development of RE-BCO superconductors with artificial pinning center, 2004.04 - 2005.03

    RE-BCO, superconductors, artificial pinning center

  • Structural and electric behavior of selfassembly organic/inorganic superlattices, 2004.04 - 2007.03

    nano structure, electric behavior, selfassembly organic/inorganic superlattices

  • Magnetic transition and Magneto-resistance on 3d transition metals., 1994.04 - 1997.03

    Magneto-resistance,transition

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Papers

  • Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe0.8Co0.2)12 Nanoparticles, 2023 IEEE International Magnetic Conference (INTERMAG), 025311-1, 2023.10

    R. Uda, K. Koike, N. Inaba, H. Kato, M. Itakura, M. Nakano, S. Okubo, H. Ohta

    Multiple Authorship (Only Japanese)

  • Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe0.8Co0.2)12 Nanoparticles, 2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers), 025311-1-025311-7, 2023.09

    R. Uda, K. Koike, N. Inaba, H. Kato, M. Itakura, M. Nakano, S. Okubo, H. Ohta

    Multiple Authorship (Only Japanese)

  • Maximum Energy Product of Exchange-Coupled Sm(FeCo)12/α-Fe Nanocomposite Particle, AIP Advances, 13 025311-1-025311-7, 2023.02

    R. Uda, K. Koike, N. Inaba, H. Kato, M. Itakura, S. Okubo, H. Ohta, H. Tsuchiura

    Multiple Authorship (Only Japanese)

  • Micromagnets fabricated by PLD-LIFT method, The Papers of Technical Meeting on "Optical and Quantum Devices ", OQD-25-005-23-OQD-25-005-24, 2025.05

    Multiple Authorship (Only Japanese)

  • Effect of Infrared Laser Annealing on Magnetic Properties of Nd-Fe-B/Fe-Co System Nanocomposite Thin Films, The Papers of Technical Meeting on "Optical and Quantum Devices ", OQD-25-005-25-OQD-25-005-28, 2025.05

    Multiple Authorship (Only Japanese)

  • Unusual Behavior of Magnetic Coercive Fields with Temperature and Applied Field in La-Doped BiFeO 3 Ceramics, ACS Applied Electronic Materials, 2023.07

    A. Billah, Y. Matsuno, A.N. Anju, K. Koike, S. Kubota, F. Hirose, B. Ahmmad,

    Multiple Authorship (Only Japanese)

  • Infrared Laser Annealing of Nanocomposite Nd-Fe-B/Mo/FeCo Multilayered Magnet Films, AIP Advances, 12(3) 035042-1-1-035042-7-7, 2022.03

    K. Koike, T. Uchida, K. Sakurai, N. Inaba, N. Inaba, H. Kato, M. Itakura, S. Hara, Y. Saito, S. Okubo, H. Ohta

    Multiple Authorship (Only Japanese)

  • Rare-earth moment reduction and local magnetic anisotropy in Pr2Fe14B and Tm2Fe14B, Journal of Magnetism and Magnetic Materials, 545 168684-1-168684-9, 2022.03

    H. Sato, Yoshioka, H. Tsuchiura, Y. Mizuno, K. Koike, K. Takahashi, and H. Kato

    Multiple Authorship (Only Japanese)

  • Reduction of Nd moments and local magnetic anisotropy in Nd2Fe14B single crystals, AIP Advances, 11 , 2021.02

    H. Sato, Y. Kubo, T. Yoshioka, H. Tsuchiura, Y. Mizuno, K. Koike, K. Takahashi, and H. Kato

    Multiple Authorship (Only Japanese)

  • Effect of Mo monoatomic interlayer on magnetic properties of in-plane anisotropic Nd-Fe-B/Mo/FeCo nanocomposite multilayered films, AIP Advances, 11 015134-1-015134-5, 2021.01

    K. Koike, K. Ohashi, T. Suzuki, C. Okita, N. Inaba, H. Kato, M. Itakura, S. Hara, Y. Saito, S. Okubo, and H. Ohta

    Multiple Authorship (Only Japanese)

  • MEMS Magnetic Sensor with Bridge-Type Resonator and Magnetostrictive Thin Film, Electronics and Communications in Japan, 101(3) 90-95, 2018.02

    N. Okada, T. Sasabuchi, K. Koike, and T. Mineta

    Multiple Authorship (Including Foreigners)

  • MEMS magnetic sensor with bridge-type resonator and magneto-strictive thin film, 2017.08

    Multiple Authorship (Only Japanese)

  • Microstructure and coercivity in La-coated Nd2Fe14B thin films, AIP Advances, 7 035301-1-035301-9, 2017.03

    M. Itakura, J. Fukuda, K. Koike, H. Ishikawa, D. Ogawa, and H. Kato

    Multiple Authorship (Including Foreigners)

  • Fabrication of orientation-controlled nanocomposite Nd2Fe14B/Mo/α–Fe multilayer films, Journal of Physics, Conference series, 2017

    K. Kobayashi, D. Ogawa, K. Koike, H. Kato, M. Oogane, T. Miyazaki, Y. Ando and M. Itakura

    Multiple Authorship (Including Foreigners)

  • Large difference between the magnetic properties of Ba and Ti co-doped BiFeO3 bulk materials and their corresponding nanoparticles prepared by ultrasonication, J. Phys. D: Appl. Phys., 49, 265003(1-8), 49 1-8, 2016.05

    B. Ahmmad, K. Kanomata, K. Koike, S. Kubota, H. Kato, F. Hirose, A. Billah, M A Jalil and M A Basith

    Multiple Authorship (Including Foreigners)

  • Modification of the Interface Nanostructure and Magnetic Properties in Nd-Fe-B Thin Films, Nanoscale Research Letters, 11(1), 1-8, 11(56) 1-8, 2016.01

    K. Koike , T. Kusano, D. Ogawa, K. Kobayashi, H. Kato, M. Oogane, T. Miyazaki, Y. Ando, and M. Itakura

    Multiple Authorship (Only Japanese)

  • Coercivity enhancement in La coated Nd-Fe-B thin films, Physics Procedia, 75 1294-1299, 2015.12

    K. Koike, H. Ishikawa, D. Ogawa, H. Kato, T. Miyazaki, Y. Ando, M. Itakura

    Multiple Authorship (Including Foreigners)

  • Negative exchange coupling in Nd2Fe14B(100)/α-Fe interface, Applied Physics Letters, 107 102406, 2015.09

    D. Ogawa, K. Koike, S. Mizukami, T. Miyazaki, M. Oogane, Y. Ando, H. Kato

    Multiple Authorship (Including Foreigners)

  • Synthesis of Metal Doped BiFeO3 Nanoparticles and their Dielectric and Magnetic Properties, Advanced Materials Research, 1101 187-191, 2015.01

    B. Ahmmad, M. A. Basith, K. Koike, S. Kubota, F. Hirose

    Multiple Authorship (Including Foreigners)

  • Effect of Dy/Nd double layer on coercivity in Nd-Fe-B thin films, Journal of Applied Physics, 2014.05

    K. Koike, J. Umezawa, H. Ishikawa, D. Ogawa, Y. Mizuno, H. Kato, T. Miyazaki, Y. Ando

    Multiple Authorship (Including Foreigners)

  • Interface state and Coercivity in Nd-Fe-B/Dy Films, J. Korean Phys. Soc., 63(2) 0, 2013.07

    J. Umezawa, Y. Sakai, K. Koike, D. Ogawa, Y. Mizuno, T. Miyazaki, Y. Ando, H. Kato

    Multiple Authorship (Including Foreigners)

  • Evaluation of interlayer exchange coupling in α-Fe(100)/Nd2Fe14B(001) Films, J. Korean Phys. Soc., 63(2) 0, 2013.07

    D. Ogawa, K. Koike, S. Mizukami, T. Miyazaki, M. Oogane, Y. Ando, H. Kato

    Multiple Authorship (Including Foreigners)

  • Microwave surface resistance of YBCO superconducting thin films under high DC magnetic field, Physica C, 484 46-48, 2013.03

    T. Honma, S. Sato, K. Sato, M. Watanabe, A. Saito, K. Koike, H. Kato, S. Ohshima

    Multiple Authorship (Including Foreigners)

  • COERCIVITY ENHANCEMENT PHENOMENA OBSERVED IN VARIOUS SERIES OF Nd2Fe14B/Nd FILMS, Proceedings on 21st Workshop on Rare-Earth Permanent Magnets and their Applications (REPM'12), 2012.09

    K. Koike, T. Kusano, D. Ogawa, Y. Mizuno, T. Miyazaki, Y. Ando and H. Kato

    Multiple Authorship (Including Foreigners)

  • EVALUATION OF EXCHANGE COUPLING IN Nd2Fe14B/α-Fe INTERFACES, Proceedings on 21st Workshop on Rare-Earth Permanent Magnets and their Applications (REPM'12), 2012.09

    D. Ogawa, K. Koike, S. Mizukami, T. Miyazaki, M. Oogane, Y. Ando, and H. Kato

    Multiple Authorship (Including Foreigners)

  • INTERFACE STATE AND COERCIVITY in Nd-Fe-B Magnets, Proceedings on 21st Workshop on Rare-Earth Permanent Magnets and their Applications (REPM'12), 2012.09

    H. Kato, D. Ogawa, and K. Koike

    Multiple Authorship (Including Foreigners)

  • EFFECT OF RARE-EARTH OVERLAYERS ON THE COERCIVITY IN Nd-Fe-B FILMS, Proceedings on 21st Workshop on Rare-Earth Permanent Magnets and their Applications (REPM'12), 2012.09

    J. Umezawa, Y. Sakai, K. Koike, D. Ogawa, Y. Mizuno, T. Miyazaki, Y. Ando, and H. Kato

    Multiple Authorship (Including Foreigners)

  • Giant coercivity enhancement by Nd sputter coating in Nd2Fe14B thin films, Proc. on the 21th International Workshop on Rare-earth Permanent Magnets and their Applications, 2010.08

    K. Koike, T. Kusano, D. Ogawa, T. Miyazaki, T. Akiya, Y. Adachi, and H. Kato

    Multiple Authorship (Including Foreigners)

  • Ferromagnetic resonance investigation of exchange coupling in Nd2Fe14B/α-Fe interfaces, Proc. on the 21th International Workshop on Rare-earth Permanent Magnets and their Applications, 2010.08

    D. Ogawa, K. Koike, T. Miyazaki, S. Mizukami, T. Akiya, M. Oogane, Y. Ando, H. Kato

    Multiple Authorship (Including Foreigners)

  • Modification of the interface nanostructure and coercivity in Nd-Fe-B magnets, Proc. on the 21th International Workshop on Rare-earth Permanent Magnets and their Applications, 2010.08

    Hiroaki Kato, T. Akiya, K. Koike, D. Ogawa

    Multiple Authorship (Including Foreigners)

  • Effect of rare-earth overlayer on the coercivity in sputter-deposited Nd-Fe-B films (共著), Journal of Physics: Conference Series, 200 082015(1)-082015(4), 2010.02

    K. Koike, S. Igarashi, K. Yamaguchi, T. Kusano, T. Miyazaki, D. Ogawa, T. Akiya, Y. Adachi, and H. Kato

    Multiple Authorship (Including Foreigners)

  • Coercivity enhancement induced by high-magnetic-field annealing in sintered Nd-Fe-B magnets, Proceedings of The 20th Workshop on Rare Earth Permanent Magnets and Applications, 2008.09

    Hiroaki Kato, Takahiro Akiya, Kunihiro Koike, Keiichi Koyama, and Masato Sagawa

    Multiple Authorship (Including Foreigners)

  • Effect of cooling rate after the high field annealing on the coercivity in sintered Nd-Fe-B magnets, Proceedings of The 20th Workshop on Rare Earth Permanent Magnets and Applications, 2008.09

    Kunihiro Koike, Takahiro Akiya, Keiichi Koyama, and Hiroaki Kato

    Multiple Authorship (Including Foreigners)

  • Effects of Fe and Co addition on the magnetoresistance of Ni-Mn-Ga films, Eur. Phys. J. Special Topics, 158 143-148, 2008.04

    K. Koike, M. Ohtsuka, M. Matsumoto, Y. Adachi, T. Takagi, and H. Kato

    Multiple Authorship (Including Foreigners)

  • Damping constant of Co/Pt multilayer thin-film media (共著), Journal of Magnetism and Magnetic Materials, 320 3019-3022, 2008.04

    N. Fujita, N. Inaba, F. Kirino, S. Igarashi, K. Koike, H. Kato

    Multiple Authorship (Including Foreigners)

  • A Strange Lapsed-Time Dependence on The Electrical Resistivity of The Evaporated Aluminum Thin Films Coated by Alkyl Derivative of Merocyanine Dye, Material Technology, 2007.12

    Masruroh, Y. Tsuchimoto, M. Makino, K. Orihara, K. Koike, M. Toda

    Multiple Authorship (Including Foreigners)

  • Electrical Resistivity of The Evaporated Aluminum Thin Films Coated by Alkyl Derivative of Merocyanine Dye, Material Technology, 2007.09

    Masruroh, K. Orihara, K. Koike, H. Kato, M. Ishikawa, T. Kouda, S. Ikeda, M. Toda

    Multiple Authorship (Including Foreigners)

  • Electric resistivity and magnetic property for Cr2Se3 and its Te substitution system, Jounal of Magnetism and Magnetic. Materials, 310(2) 1849-1850, 2007.04

    Y. Adachi,, K. Izaki, K. Koike, H. Morita, T. Kaneko, H. Kimura, A. Inoue

    Multiple Authorship (Including Foreigners)

  • Magnetoresistance of Ni–Mn–Ga–Fe ferromagnetic shape memory films, Jounal of Magnetism and Magnetic Materials, 310(2) e996-e998, 2007.04

    K. Koike, M. Ohtsuka, Y. Honda, H. Katsuyama, M. Matsumoto, K. Itagaki, Y. Adachi, H. Morita

    Multiple Authorship (Including Foreigners)

  • Martensitic transformation and shape memory effect of Ni-rich Ni2MnGa sputtered films under magnetic field, Jounal of Magnetism and Magnetic Materials, 310(2) 2782-2784, 2007.04

    M. Ohtsuka, M. Matsumoto, K. Koike, T. Takagi, K. Itagaki

    Multiple Authorship (Including Foreigners)

  • Magnetic properties of Co/Pt-Pd multilayer thin film media, Physica Status Solid (c), 4 4498-4502, 2007.04

    N. Inaba, S. Igarashi, F. Kirino, M. Fujita, K. Koike, and H. Kato

    Multiple Authorship (Including Foreigners)

  • Anomalous Temperature Dependence of Electrical Resistivity of The Evaporated Aluminum Thin Films Coated by Organic Dye, Material Technology, 25(1) 31-35, 2007.01

    Masruroh, Y. Tsuchimoto, K. Orihara, K. Koike, H. Morita

    Multiple Authorship (Including Foreigners)

  • Damping Constants of Ni-Fe, Ni-Co, and Fe-Co Alloy Thin Films, IEEE, Transactions on Magnetics, 2006.10

    9． N. Inaba, H. Asanuma, S. Igarashi, S. Mori, F. Kirino, K. Koike, H. Morita

    Multiple Authorship (Including Foreigners)

  • Damping constants of Ni-Fe and Ni-Co alloy thin films, IEEE Trans. Magn., 42 2372-2374, 2006.07

    N. Inaba, H. Asanuma, S. Igarashi, S. Mori, F. Kirino, K. Koike, and H. Morita

    Multiple Authorship (Including Foreigners)

  • Growth of EuBa2Cu3O7-δ films under an ozone atmosphere, Physica C, 426-431 1429-1433, 2005.10

    M. Mukaida, M. Miura, A. Ichinose, S. Horii, K. Matsumoto, Y. Yoshida, K. Koike, Y. Takahashi, A. Saito and S. Ohshima

    Multiple Authorship (Including Foreigners)

  • Crystal distortion associated with ortho–tetra transition of REBa2Cu3Ox films, Physica C, 426-431(Part 2) 1010-1014, 2005.10

    M. Mukaida, M. Miura, A. Ichinose, S. Horii, K. Matsumoto, Y. Yoshida, K. Koike, Y. Takahashi, A. Saito and S. Ohshima

    Multiple Authorship (Including Foreigners)

  • Microstructure of ErBa2Cu3O7−δ films with BaZrO3 dispersion pinning centers for high JC applications, Physica C, 426-431(Part 2) 1415-1418, 2005.10

    M. Ito, M. Mukaida, T. Ohazama, R. Kita, A. Ichinose, S. Horii, A. Saito, K. Matsumoto, Y. Yoshida, K. Koike, F. Hirose, S. Ohshima

    Multiple Authorship (Including Foreigners)

  • Growth and characterization of a-axis oriented ErBa2Cu3O7−δ films using double buffer layers, Physica C, 426-431(Part 2) 1424-1428, 2005.10

    Y. Shingai, M. Mukaida, K. Matsumoto, Y. Yoshida, A. Ichinose, S. Horii, K. Koike, F. Hirose, A. Saito and S. Ohshima

    Single Author

  • Fabrication of a/c axes oriented grain boundaries in YBCO films by selective growth, IEEE Transactions on Applied Superconductivity, 15 2935-2938, 2005.05

    Y. Shingai, M. Mukaida, A. Ichinose, S. Horii, Y. Yoshida, K. Matsumoto, F. Hirose, K. Koike, A. Saito, S. Ohshima

    Multiple Authorship (Including Foreigners)

  • Reduction of surface resistance of ErBa2Cu3O7-δ films by BaZrO3 nano-particle inclusion, Japanese Journal of Applied Physics, 43(12B) L1623-L1625, 2004.11

    M. Mukaida, M. Ito, R. Kita, S. Horii, A. Ichinose, M. Matsumoto, Y. Yoshida, A. Saito, K. Koike, F. Hirose, S. Ohshima

    Multiple Authorship (Including Foreigners)

  • Effect of Cobalt Addition on Shape Memory Properties of Ferromagnetic Ni-Mn-Ga Sputtered Films, Materials Transactions, 45(2) 350-352, 2004.04

    Yoshiharu Katano, Makoto Ohtsuka, Minoru Matsumoto, Kunihiro Koike, Kimio Itagaki

    Multiple Authorship (Including Foreigners)

  • Reduction of Coercivity in FePt/FeRh Bilayer Films by Heating, IEEE, Transactions on Magnetics, 41(10) 2854-2857, 2004.04

    S. Koyama, H. Ogata, M. Konno, T. Goto, K. Koike

    Multiple Authorship (Including Foreigners)

  • Microstructure and magnetic properties of Co-Cr-C/Ag/Ti/SiO2 multilayers, Scripta Materialia, 44(8-9) 1395-1399, 2001.05

    Kunihiro Koike, Hiroaki Morita, Katsuhiko Asami, Yoshiya Adachi, Masayoshi Ohashi

    Multiple Authorship (Including Foreigners)

  • The Effects of Ag Interlayer for Magnetic Properties of Co-Cr-C/Ag/Ti films, Journal of the Magnetic Society of Japan, 25(4-2 ) 851 -854, 2001.01

    Kunhiro Koike, Hiroaki Morita, Shigeru Shikama, Yoshiya Adachi, Masayoshi Ohashi, Katsuhiko Asami

    Multiple Authorship (Only Japanese)

  • The Underlayer Effects for Magnetic Properties of Co-Cr-C Granular Films, Journal of the Magnetic Society of Japan, 24(4-2) 851-854, 2000.01

    Kunihiro Koike, Hisayoshi Obi, Yuuji Sato, Hiroaki Morita, Shigeru Shikama, Yoshiya Adachi, Masayoshi Ohashi

    Multiple Authorship (Only Japanese)

  • Magnetic Properties of Co-Cr/Ag/Cr films by Ion-Beam Sputtering Method, Journal of the Magnetic Society of Japan, 24(4-2) 481-484, 1997.01

    Multiple Authorship (Only Japanese)

  • Magnetoresistance of Fe-Rh alloys, Journal of the Magnetic Society of Japan, 20(2) 249-252, 1996.01

    Kunihiro Koike, Hiroaki Morita, Takejiro Kaneko

    Multiple Authorship (Only Japanese)

  • Hysteresis loop of thermomagnetic curve of Fe-Rh alloys, Journal of Magnetism and Magnetic Materials, 140-144(part1) 77-78, 1995.01

    Hiroaki Morita, Kunihiro Koike, Takejiro Kaneko, Kiyoshi Watanabe, Hirotyasu Fujimori

    Multiple Authorship (Including Foreigners)

  • Thermal stability of induced magnetic anisotropy of Fe-Zr-N/AlN multilayer films, Journal of Magnetic Society of Jpan, 17(1) 48-51, 1993.01

    Kuninihiro Koike,Makoto Munakata, Yutaka Shimada, Noriaki Taneko, Kazuaki Fukamichi,Akio Ohtsubo

    Multiple Authorship (Only Japanese)

  • Relaxation process of the magnetic anisotropy of Co-Zr-Nb-N microcrystalline films, Journal of the Magnetic Society of Jpan, 15(S2) 137-140, 1991.10

    Kunihiro Koike, Makoto Munakata, Yutaka Shimada, Ryo Sakai, Akio Ohtsubo

    Multiple Authorship (Including Foreigners)

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Review Papers

  • Interface Modification and Magnetic properties of Nd2Fe14B prepared by Thin Film Process, Magnetics Society of Japan, Magune/ Magnetics, Japan, 11(6) 333-343, 2016.12

    Kunihiro Koike, Daisuke Ogawa, Hiroaki Kato

  • Interface and Exchange Coupling for Nd2Fe14B/α-Fe Nano-Composite Thin Film Magnets, Magnetics Society of Japan, Magune/ Magnetics, Japan, 13(1) 19-27, 2018.02

    Kunihiro Koike, Daisuke Ogawa, Hiroaki Kato

Grant-in-Aid for Scientific Research

  • Grant-in-Aid for challenging Exploratory Research，2025.06 - 2028.03

  • Grant-in-Aid for Scientific Research(C)，2024.04 - 2028.03

  • Grant-in-Aid for Scientific Research(C)，2020.04 - 2024.03

  • Grant-in-Aid for Scientific Research(B)，2020.04 - 2023.03

  • Grant-in-Aid for Scientific Research(B)，2016.04 - 2019.03

  • Grant-in-Aid for Scientific Research(C)，2010.04 - 2013.03

  • Grant-in-Aid for Scientific Research(B)，2015.04 - 2018.03

  • Grant-in-Aid for Scientific Research(C)，1994.04 - 1995.03

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Presentations

  • Trends in MAGnetism 2025, International presentation, 2025.09, Magnetic Properties of Nd-Fe-B Single Dots Fabricated Using The PLD-LIFT Method, Poster presentation

  • The 28th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications, International presentation, 2025.07, Demagnetization process of Sm(FeCo)12/α-Fe grains with a gradient structure, Poster presentation

  • IcAUMS2025, International presentation, 2025.04, Poster presentation

  • IEEE INTERMAG2023, International presentation, 2023.05, Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe0.8Co0.2)12 Nanoparticles, Poster presentation

  • MMM 2022 Conference, International presentation, 2022.10, Maximum energy product of exchange-coupled Sm(FeCo)12/α-Fe nanocomposite particle, Poster presentation

  • 2022 Joint MMM-Intermag Conference, International presentation, 2022.01, Poster presentation

  • 2022 Joint MMM-Intermag Conference, International presentation, 2022.01, Poster presentation

  • 2020 Magnetic Materials and Magnetism (MMM) Conference, International presentation, 2020.11, Poster presentation

  • 2020 Magnetic Materials and Magnetism (MMM) Conference, International presentation, 2020.11, Poster presentation

  • 19th Cross Straits Symposium on Energy and Environmental Science & Technology (CSS-EEST19), International presentation, 2017.11 - 2017.12, Microstructure and magnetic properties of Nd-Fe-B/Mo/α-Fe or Fe-B multilayer thin film, Poster presentation

  • The20th International Conference on Magnetism (ICM2015), International presentation, 2015.07, Shape dependent spin switching and surface state in millimeter-sized single crystals of R2Fe14B (R=Nd and Tb), Poster presentation

  • The20th International Conference on Magnetism (ICM2015), International presentation, 2015.07, Coercivity enhancement in La coated Nd-Fe-B thin films, Poster presentation

  • 59th ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS (MMM2014), International presentation, 2014.11, Fabrication of High-Quality Nd2Fe14B Thin Films by Using UHV Multi-Cathode Sputtering System, Poster presentation

  • 59th ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS (MMM2014), International presentation, 2014.11, Interface modification and magnetic properties of Nd2Fe14B/M (M = Nd, Mo)/Fe thin films,, Poster presentation

  • International Conference on Magnetism 2018, International presentation, 2018.07, Effect of Fe-B layer on Microstructure and Magnetic Properties of Exchange Coupled Nd-Fe-B/Mo/Fe-B Nanocomposite Multilayer, Other

  • IEEE International Magnetics Conference (INTERMAG EUROPE 2014), International presentation, 2014.05, Effects of La overlayer on coercivity of Nd-Fe-B thin films,, Poster presentation

  • IEEE International Magnetics Conference (INTERMAG EUROPE 2014), International presentation, 2014.05, Experimental evidence for the negative exchange coupling in the Nd2Fe14B and α-Fe interfaces, Oral presentation (general)

  • 58th ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS (MMM Conference), International presentation, 2013.11, Effect of Dy/Nd double layer on coercivity in Nd-Fe-B thin films, Poster presentation

  • European Congress and Exhibition on Advanced Materials and Processes, EUROMAT2013, International presentation, 2013.09, EFFECT OF INTERFACE STATE ON THE COERCIVITY IN ND-FE-B MAGNETS, Oral presentation (invited, special)

  • European Congress and Exhibition on Advanced Materials and Processes, EUROMAT2013, International presentation, 2013.09, Structure and magnetic properties of inverse-sputtered Nd-Fe-B/Nd films, Poster presentation

  • 2nd International Conference of the Asian Union of Magnetics Societies (ICAUMS2012), International presentation, 2012.10, Effect of Annealing on Coercivity of Nd-Fe-B/Nd Thick Films, Poster presentation

  • 2nd International Conference of the Asian Union of Magnetics Societies (ICAUMS2012), International presentation, 2012.10, Combinatorial approach to the optimization of magnetic properties in Nd-Fe-B thin films, Poster presentation

  • The19th International Conference on Magnetism (ICM2012), International presentation, 2012.06, Effects of Grain Size and Interface State on the Coercivity in Nd-Fe-B/Nd Thin Films, Poster presentation

  • The19th International Conference on Magnetism (ICM2012), International presentation, 2012.06, Evaluation of interlayer exchange coupling in α-Fe(100)/Nd2Fe14B(001) Films, Oral presentation (general)

  • The19th International Conference on Magnetism (ICM2012), International presentation, 2012.06, Interface state and Coercivity in Nd-Fe-B/Dy Films, Poster presentation

  • European Congress on Advanced Materials and Processes, International presentation, 2011.09, Oral presentation (general)

  • European Congress on Advanced Materials and Processes, International presentation, 2011.09, Oral presentation (general)

  • IEEE International Magnetics Conference, International presentation, 2011.04, Oral presentation (general)

  • 2011 TMS Annual Meeting & Exhibition, International presentation, 2011.02 - 2011.03, Oral presentation (invited, special)

  • 21st Workshop on Rare-Earth Permanent Magnets and their Applications (REPM'10), International presentation, 2010.08 - 2010.09, Giant Coercivity Enhancement by Nd Sputter Coating in Nd2Fe14B Thin Films, Oral presentation (general)

  • 21st Workshop on Rare-Earth Permanent Magnets and their Applications (REPM'10), International presentation, 2010.08 - 2010.09, Oral presentation (general)

  • The 2nd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA2010), International presentation, 2010.07, Enhanced coercivity in Al2O3(a-plane) /Mo /Nd-Fe-B/Nd/Mo thin films, Poster presentation

  • The 2nd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA2010), International presentation, 2010.07, Ferromagnetic-Resonance Study of Exchange Coupling inα-Fe/Nd2Fe14B Interfaces, Poster presentation

  • The 2nd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA2010), International presentation, 2010.07, Interface Nanostructure and Coercivity in Nd-Fe-B Magnets, Oral presentation (general)

  • The 2nd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA2010), International presentation, 2010.07, Effect of Substrate Temperature during Deposition of Nd overlayer on the Coercivity in Nd-Fe-B Thick Films, Poster presentation

  • The 20th Workshop on Rare Earth Permanent Magnets and Applications, International presentation, 2008.09, Poster presentation

  • The 20th Workshop on Rare Earth Permanent Magnets and Applications, International presentation, 2008.09, Oral presentation (invited, special)

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Academic Activity

  • The Japan Society of Applied Physics, Tohoku Chapter, Secretary, 2022.04 -

  • The Magnetics Society of Japan, secretary editor , 2013.06 - 2023.06

  • 日本磁気学会, 2019.06 - 2020.03

  • JSPS, 2019.07 - 2020.06

  • IEEE INTERMAG2020 ProCom, 2019.10 - 2020.10

  • 日本磁気学会, 2020.06 - 2021.03

  • JSPS, 2021.05

  • 日本磁気学会, 2015.07 - 2016.03

  • 日本磁気学会, 2016.07 - 2017.03

  • 日本磁気学会, 2016.07 - 2017.03

  • 日本磁気学会, 2017.06 - 2018.03

  • 日本磁気学会, 2013.07 - 2014.03

  • 日本磁気学会, 2011.06 - 2013.05

  • 日本磁気学会, 2012.05 - 2012.09

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Media Coverage

  • 第4章 ナノ磁性材料に関連する企業・研究機関の取組動向の4章5節 国立大学法人山形大学，2024.08