Details of the Researcher

PHOTO

Keita Ito
Section
Institute for Materials Research
Job title
Assistant Professor
Degree

  • 博士（工学）（筑波大学）

  • 修士（工学）（筑波大学）

Researcher ID
D-3805-2016

Research History 4

  • 2016/09 - Present
    Tohoku University　Institute for Materials Research

  • 2014/04 - 2016/08
    Tohoku University　Graduate School of Engineering Department of Electronic Engineering　JSPS Postdoctoral Fellow

  • 2014/04 - 2016/08
    University of Tsukuba　Faculty of Pure and Applied Sciences　Visiting Researcher

  • 2012/04 - 2014/03
    University of Tsukuba　Graduate School of Pure and Applied Sciences Institute of Applied Physics　JSPS Research Fellow (DC2)

Education 3

  • University of Tsukuba　Graduate School of Pure and Applied Sciences　Institute of Applied Physics

    2011/04 - 2014/03

  • University of Tsukuba　Graduate School of Pure and Applied Sciences　Institute of Applied Physics

    2009/04 - 2011/03

  • University of Tsukuba　Third Cluster of Colleges　College of Engineering Sciences

    2005/04 - 2009/03

Committee Memberships 2

  • 公益社団法人 日本磁気学会　論文・編集委員会委員

    2019/06 - 2025/05

  • IUMRS-ICYRAM2022 Contributed Session Organizer

    2022/04 - 2022/08

Professional Memberships 3

  • 日本金属学会

    2017/01 - Present

  • 日本磁気学会

    2015/04 - Present

  • 応用物理学会

    2009/01 - Present

Research Interests 2

  • Spintronics

  • Magnetic Nitrides

Research Areas 3

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Electric/electronic material engineering /

  • Nanotechnology/Materials / Crystal engineering /

  • Nanotechnology/Materials / Applied materials /

Awards 7

  1. Core Research Cluster for Spintronics Award 2024

    2024/11　Tohoku University

  2. 61st Harada Young Research Award

    2021/07

  3. 第134回 東北大学金属材料研究所講演会 優秀ポスター賞

    2017/11

  4. 2013年度 筑波大学大学院 数理物質科学研究科長表彰

    2014/03

  5. SPring-8 User Community 2013 Young Scientist Award

    2013/09

  6. Best Poster Award in the 8th International Nanotechnology Conference on Communication and Cooperation

    2012/05

  7. 2010年度 筑波大学大学院 数理物質科学研究科長表彰

    2011/03

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Papers 62

  1. Composition dependence of the anomalous Nernst effect in Fe4-xMnxN and Fe4-yCoyN films Peer-reviewed

    Weida Yin, Keita Ito, Yusuke Tsubowa, Masahito Tsujikawa, Masafumi Shirai, Rie Y. Umetsu, Koki Takanashi

    Journal of Magnetism and Magnetic Materials　628　173157-1-8　2025/09

    DOI： 10.1016/j.jmmm.2025.173157 　

  2. Antisymmetric interlayer exchange coupling spontaneously built in synthetic antiferromagnetic structure by film growth Peer-reviewed

    Takeshi Seki, Hiroto Masuda, Varun Kumar Kushwaha, Takumi Yamazaki, Keita Ito

    Journal of Physics D: Applied Physics　58　(17)　175002-1-10　2025/04

    DOI： 10.1088/1361-6463/adbd4f 　

  3. Giant tunability of magnetoelasticity in Fe4N system as a platform to unveil correlation between magnetostriction and magnetic damping Peer-reviewed

    Keita Ito, Ivan Kurniawan, Yusuke Shimada, Yoshio Miura, Yasushi Endo, Takeshi Seki

    Communications Materials　6　53-1-8　2025/03

    DOI： 10.1038/s43246-025-00784-5 　

  4. Microscopic correlation between magnetostriction and magnetic damping

    Ivan Kurniawan, Keita Ito, Takeshi Seki, Keisuke Masuda, Yoshio Miura

    arXiv 2412.20405　2024/12

    DOI： 10.48550/arXiv.2412.20405 　

  5. Enhanced orbital magnetic moment in an FeCo-BaF2 granular film revealed by x-ray magnetic circular dichroism Peer-reviewed

    Keita Ito, Nobukiyo Kobayashi, Kenji Ikeda, Takumi Ichimura, Mitsuhiro Matsuki, Takahide Kubota, Kenta Amemiya, Akio Kimura, Koki Takanashi

    Journal of Magnetism and Magnetic Materials　606　172361-1-5　2024/09

    DOI： 10.1016/j.jmmm.2024.172361 　

  6. Magnetoelastic coupling for Fe-Ga thin films epitaxially grown on different substrates Peer-reviewed

    Hao Ding, Keita Ito, Yasushi Endo, Koki Takanashi, Takeshi Seki

    Journal of Physics D: Applied Physics　57　(38)　385002-1-10　2024/09

    DOI： 10.1088/1361-6463/ad58f0 　

  7. Negative anomalous Nernst coefficient in a MnAlGe film and its enhancement in a (Mn-Cr)AlGe film Peer-reviewed

    Keita Ito, Takahide Kubota, Koki Takanashi

    Physical Review Applied　21　(5)　054012-1-7　2024/05

    DOI： 10.1103/PhysRevApplied.21.054012 　

  8. Uniaxial magnetic anisotropy of L10-FeNi films with island structures on LaAlO3(110) substrates by nitrogen insertion and topotactic extraction Peer-reviewed

    Takahiro Nishio, Keita Ito, Hiroaki Kura, Koki Takanashi, Hideto Yanagihara

    Journal of Alloys and Compounds　976　172992-1-8　2024/03

    Publisher: Elsevier BV

    DOI： 10.1016/j.jallcom.2023.172992 　

    ISSN： 0925-8388

  9. Fabrication of L10-ordered FeNi films by denitriding FeNiN(001) and FeNiN(110) films Peer-reviewed

    Keita Ito, Takumi Ichimura, Masahiro Hayashida, Takahiro Nishio, Sho Goto, Hiroaki Kura, Ryusei Sasaki, Masahito Tsujikawa, Masafumi Shirai, Tomoyuki Koganezawa, Masaki Mizuguchi, Yusuke Shimada, Toyohiko J. Konno, Hideto Yanagihara, Koki Takanashi

    Journal of Alloys and Compounds　946　169450-1-10　2023/06

    DOI： 10.1016/j.jallcom.2023.169450 　

    ISSN： 0925-8388

    eISSN： 1873-4669

  10. Anomalous Nernst effect in epitaxially grown Fe4-xNixN films Peer-reviewed

    Weida Yin, Keita Ito, Yusuke Tsubowa, Masahito Tsujikawa, Masafumi Shirai, Koki Takanashi

    AIP Advances　13　(2)　025243-1-6　2023/02

    DOI： 10.1063/9.0000564 　

    eISSN： 2158-3226

  11. Perpendicularly magnetized epitaxial Co/Ni multilayers grown on Ru (0001) layers by alternate monoatomic layer deposition Peer-reviewed

    Keita Ito, Naoto Kikuchi, Takeshi Seki, Koki Takanashi

    Journal of Magnetism and Magnetic Materials　563　169908-1-6　2022/12

    DOI： 10.1016/j.jmmm.2022.169908 　

    ISSN： 0304-8853

    eISSN： 1873-4766

  12. Enhancement of the anomalous Nernst effect in epitaxial Fe4N films grown on SrTiO3(001) substrates with oxygen deficient layers Peer-reviewed

    Keita Ito, Jian Wang, Yusuke Shimada, Himanshu Sharma, Masaki Mizuguchi, Koki Takanashi

    Journal of Applied Physics　132　(13)　133904-1-7　2022/10

    DOI： 10.1063/5.0102928 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  13. Thickness dependence of anomalous Hall and Nernst effects in Ni-Fe thin films Peer-reviewed

    Takumi Yamazaki, Takeshi Seki, Rajkumar Modak, Keita Nakagawara, Takamasa Hirai, Keita Ito, Ken-ichi Uchida, Koki Takanashi

    Physical Review B　105　(21)　214416-1-9　2022/06

    DOI： 10.1103/PhysRevB.105.214416 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  14. Magnetoelastic anisotropy in Heusler-type Mn2-δCoGa1+δ films Peer-reviewed

    Takahide Kubota, Daichi Takano, Yohei Kota, Shaktiranjan Mohanty, Keita Ito, Mitsuhiro Matsuki, Masahiro Hayashida, Mingling Sun, Yukiharu Takeda, Yuji Saitoh, Subhankar Bedanta, Akio Kimura, Koki Takanashi

    Physical Review Materials　6　(4)　044405-1-12　2022/04

    DOI： 10.1103/PhysRevMaterials.6.044405 　

    ISSN： 2475-9953

  15. Strain-Induced Large Anomalous Nernst Effect in Polycrystalline Co2MnGa/AlN Multilayers Peer-reviewed

    Jian Wang, Yong-Chang Lau, Weinan Zhou, Takeshi Seki, Yuya Sakuraba, Takahide Kubota, Keita Ito, Koki Takanashi

    Advanced Electronic Materials　8　(9)　2101380-1-8　2022/04

    DOI： 10.1002/aelm.202101380 　

    ISSN： 2199-160X

  16. Transition metal nitrides and their mixed crystals for spintronics Invited Peer-reviewed

    Keita Ito, Syuta Honda, Takashi Suemasu

    Nanotechnology　33　(6)　062001-1-21　2022/02

    DOI： 10.1088/1361-6528/ac2fe4 　

    ISSN： 0957-4484

    eISSN： 1361-6528

  17. Synthesis and magnetic properties of tetragonally ordered Fe2Ni2N alloy using topotactic nitriding reaction Peer-reviewed

    Sho Goto, Hiroaki Kura, Masahito Tsujikawa, Masafumi Shirai, Keita Ito, Takashi Suemasu, Koki Takanashi, Hideto Yanagihara

    Journal of Alloys and Compounds　885　161122-1-5　2021/12

    DOI： 10.1016/j.jallcom.2021.161122 　

    ISSN： 0925-8388

    eISSN： 1873-4669

  18. Fabrication of L10-FeNi films with island structures by nitrogen insertion and topotactic extraction for improved coercivity Peer-reviewed

    Takahiro Nishio, Hiroaki Kura, Keita Ito, Koki Takanashi, Hideto Yanagihara

    APL Materials　9　(9)　091108-1-8　2021/09

    DOI： 10.1063/5.0062692 　

    ISSN： 2166-532X

  19. Microstructures and Interface Magnetic Moments in Mn2VAl/Fe Layered Films Showing Exchange Bias Peer-reviewed

    Takahide Kubota, Yusuke Shimada, Tomoki Tsuchiya, Tomoki Yoshikawa, Keita Ito, Yukiharu Takeda, Yuji Saitoh, Toyohiko J. Konno, Akio Kimura, Koki Takanashi

    Nanomaterials　11　(7)　1723-1-11　2021/07

    DOI： 10.3390/nano11071723 　

    eISSN： 2079-4991

  20. Perpendicular magnetic anisotropy in ultra-thin Cu2Sb-type (Mn-Cr)AlGe films fabricated onto thermally oxidized silicon substrates Peer-reviewed

    Takahide Kubota, Keita Ito, Rie Y. Umetsu, Koki Takanashi

    Applied Physics Letters　118　(26)　262404-1-5　2021/06

    DOI： 10.1063/5.0049899 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  21. MgO template effect for perpendicular magnetic anisotropy in (001)-textured poly-crystalline MnAlGe films Peer-reviewed

    Takahide Kubota, Keita Ito, Rie Y. Umetsu, Masaki Mizuguchi, Koki Takanashi

    AIP Advances　11　(1)　015124-1-5　2021/01

    DOI： 10.1063/9.0000138 　

    eISSN： 2158-3226

  22. Magnetic compensation at two different composition ratios in rare-earth-free Mn4-xCoxN ferrimagnetic films Peer-reviewed

    Haruka Mitarai, Taro Komori, Taku Hirose, Keita Ito, Sambit Ghosh, Syuta Honda, Kaoru Toko, Laurent Vila, Jean-Philippe Attané, Kenta Amemiya, Takashi Suemasu

    Physical Review Materials　4　(9)　094401-1-7　2020/09

    DOI： 10.1103/PhysRevMaterials.4.094401 　

    ISSN： 2475-9953

    eISSN： 2475-9953

  23. Perpendicularly magnetized Ni/Pt (001) epitaxial superlattice Peer-reviewed

    Takeshi Seki, Masahito Tsujikawa, Keita Ito, Ken-ichi Uchida, Hidekazu Kurebayashi, Masafumi Shirai, Koki Takanashi

    Physical Review Materials　4　(6)　064413-1-9　2020/06

    DOI： 10.1103/PhysRevMaterials.4.064413 　

    ISSN： 2475-9953

    eISSN： 2475-9953

  24. Epitaxial L10-FeNi films with high degree of order and large uniaxial magnetic anisotropy fabricated by denitriding FeNiN films Peer-reviewed

    Keita Ito, Masahiro Hayashida, Hiroto Masuda, Takahiro Nishio, Sho Goto, Hiroaki Kura, Tomoyuki Koganezawa, Masaki Mizuguchi, Yusuke Shimada, Toyohiko J. Konno, Hideto Yanagihara, Koki Takanashi

    Applied Physics Letters　116　(24)　242404-1-5　2020/06

    DOI： 10.1063/5.0011875 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  25. Manipulation of saturation magnetization and perpendicular magnetic anisotropy in epitaxial CoxMn4-xN films with ferrimagnetic compensation Peer-reviewed

    Keita Ito, Yoko Yasutomi, Siyuan Zhu, Munisa Nurmamat, Masaki Tahara, Kaoru Toko, Ryota Akiyama, Yukiharu Takeda, Yuji Saitoh, Tamio Oguchi, Akio Kimura, Takashi Suemasu

    Physical Review B　101　(10)　104401-1-8　2020/03

    DOI： 10.1103/PhysRevB.101.104401 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  26. Epitaxially grown Cu2Sb-type MnGaGe films with large perpendicular magnetic anisotropy Peer-reviewed

    Mingling Sun, Takahide Kubota, Keita Ito, Shigeki Takahashi, Yoshiyuki Hirayama, Yoshiaki Sonobe, Koki Takanashi

    Applied Physics Letters　116　(6)　062402-1-4　2020/02

    DOI： 10.1063/1.5140398 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  27. Perpendicular magnetic anisotropy of (001)-textured poly-crystalline MnAlGe films Peer-reviewed

    Takahide Kubota, Yohei Kota, Keita Ito, Rie Y. Umetsu, Mingling Sun, Masaki Mizuguchi, Koki Takanashi

    AIP Advances　10　(1)　015122-1-5　2020/01

    DOI： 10.1063/1.5130388 　

    eISSN： 2158-3226

  28. Perpendicularly magnetized Cu2Sb type (Mn-Cr)AlGe films onto amorphous SiO2 Peer-reviewed

    Takahide Kubota, Yohei Kota, Keita Ito, Rie Y. Umetsu, Mingling Sun, Masaki Mizuguchi, Koki Takanashi

    Applied Physics Express　12　(10)　103002-1-4　2019/09

    DOI： 10.7567/1882-0786/ab3e2d 　

    ISSN： 1882-0778

  29. Nanoscale measurement of giant saturation magnetization in α''-Fe16N2 by electron energy-loss magnetic chiral dichroism Peer-reviewed

    Xinfeng Chen, Soma Higashikozono, Keita Ito, Lei Jin, Ping-Luen Ho, Chu-Ping Yu, Nyan-Hwa Tai, Joachim Mayer, Rafal E. Dunin-Borkowski, Takashi Suemasu, Xiaoyan Zhong

    Ultramicroscopy　203　37-43　2019/08

    DOI： 10.1016/j.ultramic.2019.02.016 　

    ISSN： 0304-3991

  30. Fabrication of L10-FeNi films by denitriding FeNiN films Peer-reviewed

    Keita Ito, Masahiro Hayashida, Masaki Mizuguchi, Takashi Suemasu, Hideto Yanagihara, Koki Takanashi

    Journal of the Magnetics Society of Japan　43　(4)　79-83　2019/07

    DOI： 10.3379/msjmag.1907R002 　

  31. Fabrication of ordered Fe-Ni nitride film with equiatomic Fe/Ni ratio Peer-reviewed

    Fumiya Takata, Keita Ito, Takashi Suemasu

    Japanese Journal of Applied Physics　57　(5)　058004-1-3　2018/05

    DOI： 10.7567/JJAP.57.058004 　

    ISSN： 0021-4922

  32. Preferred site occupation of 3d atoms in NixFe4-xN (x=1 and 3) films revealed by x-ray absorption spectroscopy and magnetic circular dichroism Peer-reviewed

    Fumiya Takata, Keita Ito, Yukiharu Takeda, Yuji Saitoh, Koki Takanashi, Akio Kimura, Takashi Suemasu

    Physical Review Materials　2　(2)　024407-1-5　2018/02

    DOI： 10.1103/PhysRevMaterials.2.024407 　

    ISSN： 2475-9953

  33. Magnetic domain walls in nanostrips of single-crystalline Fe4N(001) thin films with fourfold in-plane magnetic anisotropy Peer-reviewed

    Keita Ito, Nicolas Rougemaille, Stefania Pizzini, Syuta Honda, Norio Ota, Takashi Suemasu, Olivier Fruchart

    Journal of Applied Physics　121　(24)　243904-1-6　2017/06/30

    DOI： 10.1063/1.4989991 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  34. Highly oriented epitaxial (α''+α ')-Fe16N2 films on α-Fe(001) buffered MgAl2O4(001) substrates and their magnetization Peer-reviewed

    Soma Higashikozono, Keita Ito, Fumiya Takata, Toshiki Gushi, Kaoru Toko, Takashi Suemasu

    Journal of Crystal Growth　468　691-695　2017/06/15

    DOI： 10.1016/j.jcrysgro.2016.11.048 　

    ISSN： 0022-0248

    eISSN： 1873-5002

  35. Negative anisotropic magnetoresistance resulting from minority spin transport in NixFe4-xN (x=1 and 3) epitaxial films Peer-reviewed

    Fumiya Takata, Kazuki Kabara, Keita Ito, Masakiyo Tsunoda, Takashi Suemasu

    Journal of Applied Physics　121　(2)　023903-1-5　2017/01/14

    DOI： 10.1063/1.4974002 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  36. Growth and magnetic properties of epitaxial Fe4N films on insulators possessing lattice spacing close to Si(001) plane Peer-reviewed

    Keita Ito, Soma Higashikozono, Fumiya Takata, Toshiki Gushi, Kaoru Toko, Takashi Suemasu

    Journal of Crystal Growth　455　66-70　2016/12/01

    DOI： 10.1016/j.jcrysgro.2016.09.036 　

    ISSN： 0022-0248

    eISSN： 1873-5002

  37. Controlling magnetic domain wall positions with an external magnetic field and a low spin-polarized current in chamfered L-shaped ferromagnetic thin ribbons Peer-reviewed

    Syuta Honda, Daiki Yamamoto, Tomokatsu Ohsawa, Toshiki Gushi, Keita Ito, Takashi Suemasu

    Journal of Physics D: Applied Physics　49　(38)　385002-1-7　2016/09/28

    DOI： 10.1088/0022-3727/49/38/385002 　

    ISSN： 0022-3727

    eISSN： 1361-6463

  38. Electrical detection of magnetic domain wall in Fe4N nanostrip by negative anisotropic magnetoresistance effect Peer-reviewed

    Toshiki Gushi, Keita Ito, Soma Higashikozono, Fumiya Takata, Hirotaka Oosato, Yoshimasa Sugimoto, Kaoru Toko, Syuta Honda, Takashi Suemasu

    Journal of Applied Physics　120　(11)　113903-1-5　2016/09/21

    DOI： 10.1063/1.4962721 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  39. Epitaxial growth and magnetic properties of NixFe4-xN (x=0, 1, 3, and 4) films on SrTiO3(001) substrates Peer-reviewed

    Fumiya Takata, Keita Ito, Soma Higashikozono, Toshiki Gushi, Kaoru Toko, Takashi Suemasu

    Journal of Applied Physics　120　(8)　083907-1-7　2016/08/28

    DOI： 10.1063/1.4961734 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  40. Perpendicular magnetic anisotropy in CoxMn4-xN (x=0 and 0.2) epitaxial films and possibility of tetragonal Mn4N phase Peer-reviewed

    Keita Ito, Yoko Yasutomi, Kazuki Kabara, Toshiki Gushi, Soma Higashikozono, Kaoru Toko, Masakiyo Tsunoda, Takashi Suemasu

    AIP Advances　6　(5)　056201-1-6　2016/05

    DOI： 10.1063/1.4942548 　

    ISSN： 2158-3226

  41. Evaluation of band offset at amorphous-Si/BaSi2 interfaces by hard x-ray photoelectron spectroscopy Peer-reviewed

    Ryota Takabe, Hiroki Takeuchi, Weijie Du, Keita Ito, Kaoru Toko, Shigenori Ueda, Akio Kimura, Takashi Suemasu

    Journal of Applied Physics　119　(16)　165304-1-6　2016/04/28

    DOI： 10.1063/1.4947501 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  42. Measurement of valence-band offset at native oxide/BaSi2 interfaces by hard x-ray photoelectron spectroscopy Peer-reviewed

    Ryota Takabe, Weijie Du, Keita Ito, Hiroki Takeuchi, Kaoru Toko, Shigenori Ueda, Akio Kimura, Takashi Suemasu

    Journal of Applied Physics　119　(2)　025306-1-5　2016/01/14

    DOI： 10.1063/1.4939614 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  43. Local electronic states of Fe4N films revealed by x-ray absorption spectroscopy and x-ray magnetic circular dichroism Peer-reviewed

    Keita Ito, Kaoru Toko, Yukiharu Takeda, Yuji Saitoh, Tamio Oguchi, Takashi Suemasu, Akio Kimura

    Journal of Applied Physics　117　(19)　193906-1-6　2015/05/21

    DOI： 10.1063/1.4921431 　

  44. Mossbauer study on epitaxial CoxFe4-xN films grown by molecular beam epitaxy Peer-reviewed

    Keita Ito, Tatsunori Sanai, Yoko Yasutomi, Toshiki Gushi, Kaoru Toko, Hideto Yanagihara, Masakiyo Tsunoda, Eiji Kita, Takashi Suemasu

    Journal of Applied Physics　117　(17)　17B717-1-4　2015/05/07

    DOI： 10.1063/1.4914342 　

  45. Fabrication of L-shaped Fe4N ferromagnetic narrow wires and position control of magnetic domain wall with magnetic field Peer-reviewed

    Toshiki Gushi, Keita Ito, Syuta Honda, Yoko Yasutomi, Kaoru Toko, Hirotaka Oosato, Yoshimasa Sugimoto, Kiyoshi Asakawa, Norio Ota, Takashi Suemasu

    Japanese Journal of Applied Physics　54　(2)　028003-1-3　2015/02

    DOI： 10.7567/JJAP.54.028003 　

  46. Sign of the spin-polarization in cobalt-iron nitride films determined by the anisotropic magnetoresistance effect Peer-reviewed

    Keita Ito, Kazuki Kabara, Tatsunori Sanai, Kaoru Toko, Yoji Imai, Masakiyo Tsunoda, Takashi Suemasu

    Journal of Applied Physics　116　(5)　053912-1-7　2014/08/07

    DOI： 10.1063/1.4892179 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  47. X-ray magnetic circular dichroism for CoxFe4-xN (x=0, 3, 4) films grown by molecular beam epitaxy Peer-reviewed

    Keita Ito, Tatsunori Sanai, Yoko Yasutomi, Siyuan Zhu, Kaoru Toko, Yukiharu Takeda, Yuji Saitoh, Akio Kimura, Takashi Suemasu

    Journal of Applied Physics　115　(17)　17C712-1-3　2014/05/07

    DOI： 10.1063/1.4862517 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  48. Perpendicular magnetic anisotropy of Mn4N films on MgO(001) and SrTiO3(001) substrates Peer-reviewed

    Yoko Yasutomi, Keita Ito, Tatsunori Sanai, Kaoru Toko, Takashi Suemasu

    Journal of Applied Physics　115　(17)　17A935-1-3　2014/05/07

    DOI： 10.1063/1.4867955 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  49. Electronic structures and magnetic moments of Co3FeN thin films grown by molecular beam epitaxy Peer-reviewed

    Keita Ito, Tatsunori Sanai, Siyuan Zhu, Yoko Yasutomi, Kaoru Toko, Syuta Honda, Shigenori Ueda, Yukiharu Takeda, Yuji Saitoh, Yoji Imai, Akio Kimura, Takashi Suemasu

    Applied Physics Letters　103　(23)　232403-1-4　2013/12/02

    DOI： 10.1063/1.4836655 　

  50. Hard x-ray photoelectron spectroscopy study on valence band structure of semiconducting BaSi2 Peer-reviewed

    Masakazu Baba, Keita Ito, Weijie Du, Tatsunori Sanai, Kazuaki Okamoto, Kaoru Toko, Shigenori Ueda, Yoji Imai, Akio Kimura, Takashi Suemasu

    Journal of Applied Physics　114　(12)　123702-1-4　2013/09/28

    DOI： 10.1063/1.4823784 　

  51. Epitaxial growth of ferromagnetic CoxFe4-xN thin films on SrTiO3 (001) and magnetic properties Peer-reviewed

    Tatsunori Sanai, Keita Ito, Kaoru Toko, Takashi Suemasu

    Journal of Crystal Growth　378　342-346　2013/09/01

    DOI： 10.1016/j.jcrysgro.2012.12.149 　

  52. Molecular beam epitaxy of CoxFe4-xN (0.4 < x < 2.9) thin films on SrTiO3(001) substrates Peer-reviewed

    Tatsunori Sanai, Keita Ito, Kaoru Toko, Takashi Suemasu

    Journal of Crystal Growth　357　53-57　2012/10/15

    DOI： 10.1016/j.jcrysgro.2012.07.032 　

    ISSN： 0022-0248

  53. Negative spin polarization at the Fermi level in Fe4N epitaxial films by spin-resolved photoelectron spectroscopy Peer-reviewed

    Keita Ito, Kazuaki Okamoto, Kazunori Harada, Tatsunori Sanai, Kaoru Toko, Shigenori Ueda, Yoji Imai, Taichi Okuda, Koji Miyamoto, Akio Kimura, Takashi Suemasu

    Journal of Applied Physics　112　(1)　013911-1-4　2012/07/01

    DOI： 10.1063/1.4733327 　

    ISSN： 0021-8979

  54. Negative Anisotropic Magnetoresistance in γ'-Fe4N Epitaxial Films on SrTiO3(001) Grown by Molecular Beam Epitaxy Peer-reviewed

    Keita Ito, Kazuki Kabara, Hirokazu Takahashi, Tatsunori Sanai, Kaoru Toko, Takashi Suemasu, Masakiyo Tsunoda

    Japanese Journal of Applied Physics　51　(6R)　068001-1-2　2012/06

    DOI： 10.1143/JJAP.51.068001 　

    ISSN： 0021-4922

  55. X-ray magnetic circular dichroism of ferromagnetic Co4N epitaxial films on SrTiO3(001) substrates grown by molecular beam epitaxy Peer-reviewed

    Keita Ito, Kazunori Harada, Kaoru Toko, Mao Ye, Akio Kimura, Yukiharu Takeda, Yuji Saitoh, Hiro Akinaga, Takashi Suemasu

    Applied Physics Letters　99　(25)　252501-1-3　2011/12/19

    DOI： 10.1063/1.3670353 　

    ISSN： 0003-6951

  56. Epitaxial growth and magnetic characterization of ferromagnetic Co4N thin films on SrTiO3(001) substrates by molecular beam epitaxy Peer-reviewed

    Keita Ito, Kazunori Harada, Kaoru Toko, Hiro Akinaga, Takashi Suemasu

    Journal of Crystal Growth　336　(1)　40-43　2011/12/01

    DOI： 10.1016/j.jcrysgro.2011.09.038 　

    ISSN： 0022-0248

    eISSN： 1873-5002

  57. Toward the epitaxial growth of ferromagnetic γ'-Fe4N on Si(100) substrate by molecular beam epitaxy Peer-reviewed

    Geun Hyoung Lee, Keita Ito, Takashi Suemasu

    Physics Procedia　11　193-195　2011/08

    DOI： 10.1016/j.phpro.2011.01.051 　

    ISSN： 1875-3892

  58. Molecular beam epitaxy of ferromagnetic γ'-Fe4N thin films on LaAlO3(100), SrTiO3(100) and MgO(100) substrates Peer-reviewed

    Keita Ito, Geun Hyoung Lee, Hiro Akinaga, Takashi Suemasu

    Journal of Crystal Growth　322　(1)　63-68　2011/05

    DOI： 10.1016/j.jcrysgro.2011.03.019 　

    ISSN： 0022-0248

  59. Spin and orbital magnetic moments of molecular beam epitaxy γ'-Fe4N films on LaAlO3(001) and MgO(001) substrates by x-ray magnetic circular dichroism Peer-reviewed

    Keita Ito, Geun Hyoung Lee, Kazunori Harada, Mitsushi Suzuno, Takashi Suemasu, Yukiharu Takeda, Yuji Saitoh, Mao Ye, Akio Kimura, Hiro Akinaga

    Applied Physics Letters　98　(10)　102507-1-3　2011/03

    DOI： 10.1063/1.3564887 　

    ISSN： 0003-6951

  60. Epitaxial growth of ferromagnetic Fe4N thin films on SrTiO3(001) substrates by molecular beam epitaxy Peer-reviewed

    K. Ito, Geun Hyoung Lee, Takashi Suemasu

    Journal of Physics: Conference Series　266　(1)　012091-1-5　2011

    DOI： 10.1088/1742-6596/266/1/012091 　

    ISSN： 1742-6588

  61. Spin polarization of Fe4N thin films determined by point-contact Andreev reflection Peer-reviewed

    Akari Narahara, Keita Ito, Takashi Suemasu, Yukiko Takahashi, Ammanabrolu Rajanikanth, Kazuhiro Hono

    Applied Physics Letters　94　(20)　202502-1-3　2009/05

    DOI： 10.1063/1.3140459 　

  62. Growth of ferromagnetic Fe4N epitaxial layers and a-axis-oriented Fe4N/MgO/Fe magnetic tunnel junction on MgO(001) substrates using molecular beam epitaxy Peer-reviewed

    Akari Narahara, Keita Ito, Takashi Suemasu

    Journal of Crystal Growth　311　(6)　1616-1619　2009/03

    DOI： 10.1016/j.jcrysgro.2009.01.115 　

Show all ︎Show first 5

Misc. 4

  1. Fabrication of L10-ordered FeNi alloys with topotactic denitriding method toward application to permanent magnets Invited

    Keita Ito, Koki Takanashi, Hiroaki Kura

    Magnetics Japan　17　(2)　82-88　2022/04

  2. Progress of Spintronic Materials Based on Ordered Alloys Invited

    Koki Takanashi, Takeshi Seki, Takahide Kubota, Keita Ito

    Function & Materials　38　(8)　48-58　2018/08

  3. Exchange bias using antiferromagnetic Heusler alloy films

    Takahide Kubota, Tomoki Tsuchiya, Keita Ito, Tomoko Sugiyama, Yukiharu Takeda, Yuji Saitoh, Akio Kimura, Koki Takanashi

    IEICE Technical Report　118　(74)　43-47　2018/07

  4. Toward Silicide-based solar cells and spintronics Invited

    Takashi Suemasu, Takanobu Saito, Atsushi Okada, Katsuaki Toh, M. Ajimal Khan, Weijie Du, Makabe Keniji, Keita Ito, Kazunori Harada, Noritaka Usami

    IEICE Technical Report　110　(424)　1-5　2011/02

Presentations 155

  1. 磁性窒化物を基軸としたスピン機能材料の開発 Invited

    伊藤啓太

    第148回東北大学金属材料研究所講演会　2025/05

  2. Ab-initio study on correlation between magnetostriction and magnetic damping

    Ivan Kurniawan, Keita Ito, Takeshi Seki, Keisuke Masuda, Yoshio Miura

    The 7th International Conference of Asian Union of Magnetics Societies　2025/04

  3. Enhanced anomalous Nernst effect in Fe4N films substituted by Pt and Pd atoms

    Keita Ito, Huameng Yu, Takumi Yamazaki, Rie Y. Umetsu, Takeshi Seki

    The 7th International Conference of Asian Union of Magnetics Societies　2025/04

  4. Indirect Exchange Interaction for Perpendicularly Magnetized CoFeB Layers through W Interlayer

    Xueyao Hou, Keita Ito, Varun Kumar Kushwaha, Takumi Yamazaki, Takeshi Seki

    The 7th International Conference of Asian Union of Magnetics Societies　2025/04

  5. Magnetostrictive properties in partially Co-substituted Fe4N films

    Huameng Yu, Keita Ito, Yasushi Endo, Takeshi Seki

    日本金属学会2025年春期(第176回)講演大会　2025/03

  6. Understanding the microscopic origin of the relation between magnetoelasticity and magnetic damping in Fe4xCo4-4xN

    Ivan Kurniawan, Keita Ito, Takeshi Seki, Keisuke Masuda, Yoshio Miura

    16th Joint Conference on Magnetism and Magnetic Materials and Intermag　2025/01

  7. Development of spintronics materials based on ferromagnetic nitrides Invited

    Keita Ito

    The 8th Symposium for the Core Research Clusters for Materials Science and Spintronics and the 7th Symposium on International Joint Graduate Programs in Materials Science and Spintronics　2024/11

  8. Anomalous Nernst effect in Fe4N films substituted by heavy metals

    Keita Ito, Takeshi Seki

    The 8th Symposium for the Core Research Clusters for Materials Science and Spintronics and the 7th Symposium on International Joint Graduate Programs in Materials Science and Spintronics　2024/11

  9. Control of Magneto-Elasticity in Magnetic Thin Films

    Takeshi Seki, Keita Ito

    Summit of Materials Science 2024　2024/11

  10. Anomalous Nernst effect in Fe4N films substituted by heavy metal elements

    Keita Ito, Takeshi Seki

    2024/09

  11. First-principles study of magnetostriction and damping in Fe4xCo4-4xN

    Ivan Kurniawan, Keita Ito, Takeshi Seki, Yoshio Miura

    第85回応用物理学会秋季学術講演会　2024/09

  12. Anomalous Nernst effect in heavy-metal-substituted Fe4N films

    Keita Ito, Takeshi Seki

    第85回応用物理学会秋季学術講演会　2024/09

  13. Giant tunability of magnetoelasticity in Fe4N system: Platform for unveiling correlation between magnetostriction and magnetic damping Invited

    Takeshi Seki, Keita Ito

    International Symposium on Advanced Magnetic Materials and Applications 2024　2024/08

  14. Large modulation of magneto-elastic property in Fe4N nitride system

    Keita Ito, Ivan Kurniawan, Yusuke Shimada, Yoshio Miura, Yasushi Endo, Takeshi Seki

    2024/03

  15. Understanding sign change of magnetostriction and its relation with damping: Comparison between Fe4xCo4-4xN and fcc-NixCo1-x

    Ivan Kurniawan, Keita Ito, Takeshi Seki, Yoshio Miura

    第71回応用物理学会春季学術講演会　2024/03

  16. Large modulation of magneto-elastic property for nitrides

    Keita Ito, Ivan Kurniawan, Yusuke Shimada, Yoshio Miura, Yasushi Endo, Takeshi Seki

    日本金属学会2024年春期(第174回)講演大会　2024/03

  17. Giant Tunability of Magnetoelasticity in Fe4N System Invited

    Keita Ito, Takeshi Seki

    Iwate Spintronics School, 2024 Winter　2024/02

  18. Correlation between magnetostriction and magnetic damping in Fe4-xMnxN and Fe4-yCoyN films

    Keita Ito, Ivan Kurniawan, Yoshio Miura, Yasushi Endo, Takeshi Seki

    Summit of Materials Science 2023　2023/11

  19. Anisotropic magnetoresistance effect in Fe4-xNixN films grown by molecular beam epitaxy

    Weida Yin, Keita Ito, Takahiro Tanaka, Rie Y. Umetsu

    第47回日本磁気学会学術講演会　2023/09

  20. Correlation between magnetostriction and magnetic damping in magnetic nitride films

    Keita Ito, Ivan Kurniawan, Yoshio Miura, Yasushi Endo, Takeshi Seki

    第47回日本磁気学会学術講演会　2023/09

  21. Correlation between magnetostriction and magnetic damping in nitride films

    Keita Ito, Ivan Kurniawan, Yoshio Miura, Yasushi Endo, Takeshi Seki

    第84回応用物理学会秋季学術講演会　2023/09

  22. Modulation of anomalous Nernst effects in Fe4N and Mn4N films on SrTiO3 substrates

    Keita Ito, Himanshu Sharma, Masaki Mizuguchi, Koki Takanashi

    IEEE International Magnetics Conference 2023　2023/05

  23. Structure and magnetic properties of epitaxial Fe-Ga thin films

    Hao Ding, Takeshi Seki, Keita Ito, Yasushi Endo, Koki Takanashi

    第70回応用物理学会春季学術講演会　2023/03

  24. Anomalous Nernst effect in Fe4-xMnxN films grown by molecular beam epitaxy

    Weida Yin, Keita Ito, Masahito Tsujikawa, Masafumi Shirai, Koki Takanashi

    日本金属学会2023年春期(第172回)講演大会　2023/03

  25. Anomalous Nernst effect in epitaxially grown Fe4-xNixN films

    Weida Yin, Keita Ito, Yusuke Tsubowa, Masahito Tsujikawa, Masafumi Shirai, Koki Takanashi

    67th Annual Conference on Magnetism and Magnetic Materials　2022/11

  26. Modulation of the Anomalous Nernst Effect in Nitride Films on SrTiO3

    Keita Ito, Koki Takanashi

    The 6th Symposium for the Core Research Clusters for Materials Science and Spintronics, and the 5th Symposium on International Joint Graduate Program in Materials Science　2022/10

  27. Magnetism of L10-FeNi films with island structures fabricated by nitrogen insertion and topotactic extraction technique

    Takahiro Nishio, Hiroaki Kura, Keita Ito, Koki Takanashi, Hideto Yanagihara

    11th International Conference on Fine Particle Magnetism　2022/10

  28. Fabrication of large magnetic anisotropy material and magneto-thermoelectric material using nitrides Invited

    Keita Ito

    強的秩序とその操作に関わる第15回夏の学校　2022/09

  29. Anomalous Nernst effect in Fe4-xNixN and Fe4-xCoxN films grown by molecular beam epitaxy

    Weida Yin, Keita Ito, Yusuke Tsubowa, Masahito Tsujikawa, Masafumi Shirai, Koki Takanashi

    第83回応用物理学会秋季学術講演会　2022/09

  30. Characterization of the anomalous Nernst effect in Fe4-xNixN films

    Weida Yin, Keita Ito, Yusuke Tsubowa, Masahito Tsujikawa, Masafumi Shirai, Koki Takanash

    第46回日本磁気学会学術講演会　2022/09

  31. Modulation of the anomalous Nernst effect in nitride films on SrTiO3 substrates

    Keita Ito, Himanshu Sharma, Masaki Mizuguchi, Koki Takanashi

    第46回日本磁気学会学術講演会　2022/09

  32. Structures and magnetic properties of variant-free (110)-oriented L10-FeNi films fabricated by a denitriding method

    Keita Ito, Takumi Ichimura, Takahiro Nishio, Hiroaki Kura, Hideto Yanagihara, Koki Takanashi

    24th International Colloquium on Magnetic Films and Surfaces　2022/07

  33. Fabricating L10-ordered FeNi films by denitriding FeNiN films Invited

    Keita Ito, Takumi Ichimura, Masahiro Hayashida, Takahiro Nishio, Hiroaki Kura, Hideto Yanagihara, Koki Takanashi

    Indo-Japan Workshop on Interface Phenomena for Spintronics　2022/03

  34. Enhancement of the anomalous Nernst effect in Fe4N films on SrTiO3(001) substrates

    Keita Ito, Koki Takanashi

    第69回応用物理学会春季学術講演会　2022/03

  35. Magnetic properties of variant free L10-FeNi(110) films fabricated by a denitriding method

    Keita Ito, Takumi Ichimura, Takahiro Nishio, Hiroaki Kura, Hideto Yanagihara

    日本金属学会2021年秋期(第169回)講演大会　2021/09

  36. Anomalous Nernst effect of epitaxial Fe4N films grown on SrTiO3(001) substrates

    Keita Ito, Jian Wang, Himanshu Sharma, Masaki Mizuguchi, Koki Takanashi

    第82回応用物理学会秋季学術講演会　2021/09

  37. Fabrication of variant-free (110)-oriented L10-FeNi films by a denitriding method

    Takumi Ichimura, Keita Ito, Takahiro Nishio, Hiroaki. Kura, Hideto Yanagihara, Koki Takanashi

    第45回日本磁気学会学術講演会　2021/09

  38. Enhancement of the anomalous Nernst effect in polycrystalline Co2MnGa/AlN multilayers

    Jian Wang, Yong Chang Lau, Weinan Zhou, Takeshi Seki, Yuya Sakuraba, Takahide Kubota, Keita Ito, Koki Takanashi

    IEEE International Magnetics Conference 2021　2021/05

  39. 放射光を用いたFeNi窒化物薄膜およびL10-FeNi規則合金薄膜の評価 Invited

    伊藤啓太, 末益崇, 高梨弘毅

    2020年度SPRUCナノスピントロニクス研究会　2021/03

  40. ホイスラー合金Mn2-δCoGa1+δ 薄膜の歪誘起垂直磁気異方性

    松木充弘, 窪田崇秀, 小田洋平, 伊藤啓太, 高梨弘毅

    日本金属学会2021年春季(第168回)講演大会　2021/03

  41. Enhancement of the anomalous Nernst effect in polycrystalline Co2MnGa/AlN multilayers

    Jian Wang, Yong Chang Lau, Weinan Zhou, Takeshi Seki, Yuya Sakuraba, Takahide Kubota, Keita Ito, Koki Takanashi

    第68回応用物理学会春季学術講演会　2021/03

  42. Perpendicular magnetic anisotropy in Cu2Sb-typye (Mn-Cr)AlGe films: Mg-interface layer effect

    Takahide Kubota, Keita Ito, Rie Y. Umetsu, Koki Takanashi

    第68回応用物理学会春季学術講演会　2021/03

  43. Tetragonal strain and perpendicular magnetic anisotropy in Mn2−δCoGa1+δ thin films

    Mitsuhiro Matsuki, Takahide Kubota, Yohei Kota, Keita Ito, Koki Takanashi

    第68回応用物理学会春季学術講演会　2021/03

  44. Enhancement of magnetic anisotropy of L10-FeNi nanoparticles and the related compounds for realization of rare-earth free magnet Invited

    Sho Goto, Eiji Watanabe, Yoshiaki Hayashi, Takahiro Nishio, Hiroaki Kura, Takashi Suemasu, Hideto Yanagihara, Eiji Kita, Takashi Honda, Keita Ito, Yusuke Shimada, Masahito Tsujikawa, Masaki Mizuguchi, Masafumi Shirai, Toyohiko J. Konno, Koki Takanashi

    第44回日本磁気学会学術講演会　2020/12

  45. Epitaxial L10-FeNi Films with a High Degree of Order and Uniaxial Magnetic Anisotropy Fabricated by a Denitriding Method

    Keita Ito, Masahiro Hayashida, Takumi, Ichimura, Takahiro Nishio, Sho Goto, Hiroaki Kura, Tomoyuki Koganezawa, Masaki Mizuguchi, Yusuke Shimada, Toyohiko J. Konno, Hideto Yanagihara, Koki Takanashi

    The 4th Symposium for the Core Research Cluster for Materials Science and the 3rd Symposium on International Joint Graduate Program in Materials Science　2020/11

  46. Perpendicular magnetic anisotropy in Cu2Sb-type (Mn-Cr)AlGe films: Layer thickness and adjacent layer dependence

    Takahide Kubota, Keita Ito, Rie Y. Umetsu, Masaki Mizuguchi, Koki Takanashi

    65th Annual Conference on Magnetism and Magnetic Materials　2020/11

  47. High degree of order and uniaxial magnetic anisotropy of L10-FeNi films fabricated by denitriding epitaxial FeNiN films

    Keita Ito, Masahiro Hayashida, Hiroto Masuda, Takahiro Nishio, Sho Goto, Hiroaki Kura, Tomoyuki Koganezawa, Masaki Mizuguchi, Yusuke Shimada, Toyohiko J. Konno, Hideto Yanagihara, Koki Takanashi

    65th Annual Conference on Magnetism and Magnetic Materials　2020/11

  48. 脱窒素法による高規則度・高磁気異方性L10-FeNi薄膜の作製

    伊藤啓太, 林田誠弘, 市村匠, 西尾隆宏, 後藤翔, 藏裕彰, 小金澤智之, 水口将輝, 嶋田雄介, 今野豊彦, 柳原英人, 高梨弘毅

    日本金属学会2020年秋季(第167回)講演大会　2020/09

  49. Layer thickness and underlayer dependence of perpendicular magnetic anisotropy in Cu2Sb-type (Mn-Cr)AlGe films

    Takahide Kubota, Keita Ito, Rie Umetsu, Masaki Mizuguchi, Koki Takanashi

    第81回応用物理学会秋季学術講演会　2020/09

  50. Magnetic compensations in Mn4-xCoxN epitaxial films proved by X-ray magnetic circular dichroism

    Haruka Mitarai, Taro Komori, Taku Hirose, Keita Ito, Kaoru Toko, Kenta Amemiya, Takashi Suemasu

    第81回応用物理学会秋季学術講演会　2020/09

  51. L10-FeNi films with a large degree of order and uniaxial magnetic anisotropy fabricated by denitriding epitaxial FeNiN films

    Keita Ito, Masahiro Hayashida, Takahiro Nishio, Sho Goto, Hiroaki Kura, Tomoyuki Koganezawa, Masaki Mizuguchi, Yusuke Shimada, Toyohiko J. Konno, Hideto Yanagihara, Koki Takanashi

    第81回応用物理学会秋季学術講演会　2020/09

  52. Perpendicular magnetic anisotropy and crystal structure of Mn2-δCoGa1+δ inverse Heusler alloy films

    Takahide Kubota, Daichi Takano, Keita Ito, Koki Takanashi

    IEEE International Magnetics Conference 2020　2020/05

  53. Origin of field-like torque enhancement with decreasing Co thickness in X/Co/Y (X, Y = Pt, Pd) metallic trilayers

    Yong Chang Lau, Zhenchao Wen, Keita Ito, Junichi Ieda, Tomohiro Taniguchi, Tomoko Sasaki, Takeshi Seki, Koki Takanashi

    IEEE International Magnetics Conference 2020　2020/05

  54. 脱窒素法による高規則度L10-FeNi薄膜の作製

    伊藤啓太, 林田誠弘, 小金澤智之, 西尾隆宏, 後藤翔, 藏裕彰, 水口将輝, 柳原英人, 高梨弘毅

    日本金属学会2020年春季(第166回)講演大会　2020/03

  55. Magnetic Properties of Poly-crystalline MnAlGe Films: Layer Thickness and Adjacent Layer Dependence

    Takahide Kubota, Keita Ito, Masaki Mizuguchi, Koki Takanashi

    第67回応用物理学会春季学術講演会　2020/03

  56. Fabrication of L10-FeNi films with high degree of order by denitriding FeNiN films

    Keita Ito, Masahiro Hayashida, Tomoyuki Koganezawa, Takahiro Nishio, Sho Goto, Hiroaki Kura, Masaki Mizuguchi, Hideto Yanagihara, Koki Takanashi

    第67回応用物理学会春季学術講演会　2020/03

  57. Buffer layer dependence of magnetic properties and crystal structures for C38-type MnGaGe films

    Mingling Sun, Takahide Kubota, Keita Ito, Shigeki Takahashi, Yoshiaki Sonobe, Koki Takanashi

    64th Annual Conference on Magnetism and Magnetic Materials　2019/11

  58. Perpendicular magnetic anisotropy of Cu2Sb-type (Mn-Cr)AlGe films onto thermally oxidized silicon substrates

    Takahide Kubota, Yohei Kota, Keita Ito, Rie Umetsu, Mingling Sun, Masaki Mizuguchi, Koki Takanashi

    64th Annual Conference on Magnetism and Magnetic Materials　2019/11

  59. H2プラズマを用いたin-situ脱窒素法によるL10-FeNi薄膜の作製

    林田誠弘, 伊藤啓太, 水口将輝, 柳原英人, 高梨弘毅

    第43回日本磁気学会学術講演会　2019/09

  60. Cu2Sb型MnGaGe規則合金薄膜の磁気特性の下地層依存性

    孫銘嶺, 窪田崇秀, 伊藤啓太, 高橋茂樹, 園部義明, 高梨弘毅

    第43回日本磁気学会学術講演会　2019/09

  61. (001)配向Cu2Sb型MnAlGe多結晶薄膜の磁気特性

    窪田崇秀, 小田洋平, 伊藤啓太, 梅津理恵, 孫銘嶺, 水口将輝, 高梨弘毅

    第43回日本磁気学会学術講演会　2019/09

  62. 垂直磁化Ni/Pt金属人工格子

    関剛斎, 野尻英史, 窪田崇秀, 伊藤啓太, 紅林秀和, 内田健一, 桜庭裕弥, 三浦飛鳥, 辻川雅人, 白井正文, 高梨弘毅

    日本金属学会2019年秋季(第165回)講演大会　2019/09

  63. XMCDによるfcc-CoNi多層膜の磁気異方性の研究

    池田啓祐, 伊藤啓太, 関剛斎, 芝田悟朗, 坂本 祥哉, 野中洋亮, 池震棟, 万宇軒, 鈴木雅弘, 鈴木真粧子, 雨宮健太, 高梨弘毅, 和達大樹, 藤森 淳

    第80回応用物理学会秋季学術講演会　2019/09

  64. Cr-concentration dependence of perpendicular magnetic anisotropy in Cu2Sb-type (Mn-Cr)AlGe films

    Takahide Kubota, Yohei Kota, Keita Ito, Rie Umetsu, Mingling Sun, Masaki Mizuguchi, Koki Takanashi

    第80回応用物理学会秋季学術講演会　2019/09

  65. Fabrication of L10-FeNi films by nitrogen topotactic extraction from FeNiN films

    Keita Ito, Masahiro Hayashida, Masaki Mizuguichi, Hideto Yanagihara, Koki Takanashi

    第80回応用物理学会秋季学術講演会　2019/09

  66. MBE法により成膜したFeNiN薄膜からの 脱窒素によるL10-FeNi薄膜の作製 Invited

    伊藤啓太, 林田誠弘, 水口将輝, 柳原英人, 高梨弘毅

    第85回ナノマグネティックス専門研究会　2019/05

  67. FeNiN薄膜の作製と脱窒素法によるL10-FeNi相の形成

    林田誠弘, 伊藤啓太, 水口将輝, 柳原英人, 高梨弘毅

    日本金属学会2019年春季(第164回)講演大会　2019/03

  68. X線磁気円二色性によるfcc-CoNi多層膜の結晶磁気異方性の研究

    池田啓祐, 伊藤啓太, 関剛斎, 芝田悟朗, 坂本祥哉, 野中洋亮, 池震棟, 万宇軒, 鈴木雅弘, 酒巻真粧子, 雨宮健太, 高梨弘毅, 和達大樹, 藤森淳

    第66回応用物理学会春季学術講演会　2019/03

  69. Growth of Fe4N/Cu/Fe4N tri-layer structure for current-perpendicular-to-plane giant magnetoresistance devices

    Keita Ito, Takahide Kubota, Koki Takanashi

    第66回応用物理学会春季学術講演会　2019/03

  70. 脱窒素法で作製したL10-FeNi薄膜の評価 Invited

    伊藤啓太, 林田誠弘, 水口将輝, 柳原英人, 高梨弘毅

    第70回スピンエレクトロニクス専門研究会　2018/12

  71. Spintronics and spin-caloritronics in ordered-alloy systems

    Koki Takanashi, Masaki Mizuguchi, Takeshi Seki, Takahide Kubota, Keita Ito, Zhenchao Wen

    Summit of Materials Science 2018　2018/10

  72. Growth of FeNiN films and formation of L10-ordered FeNi films by denitriding

    Keia Ito, Masahiro Hayashida, Masaki Mizuguchi, Hideto Yanagihara, Koki Takanashi

    Summit of Materials Science 2018　2018/10

  73. 磁場角度依存XMCDによるエピタキシャルCoNi多層膜の結晶磁気異方性の研究

    池田啓祐, 伊藤啓太, 関剛斎, 芝田悟朗, 坂本祥哉, 野中洋亮, 池震棟, 万宇軒, 鈴木雅弘, 酒巻真粧子, 雨宮健太, 高梨弘毅, 和達大樹, 藤森淳

    第79回応用物理学会秋季学術講演会　2018/09

  74. BaSi2薄膜への磁性3d遷移金属添加の試み

    伊藤啓太, 召田雅実, 倉持豪人, 末益崇, 高梨弘毅

    第79回応用物理学会秋季学術講演会　2018/09

  75. 脱窒素法によるL10-FeNi薄膜の作製

    伊藤啓太, 林田誠弘, 水口将輝, 末益崇, 柳原英人, 高梨弘毅

    日本金属学会2018年秋季(第163回)講演大会　2018/09

  76. FeNiN薄膜からの脱窒素によるL10-FeNi薄膜の形成

    伊藤啓太, 林田誠弘, 水口将輝, 末益崇, 柳原英人, 高梨弘毅

    第42回日本磁気学会学術講演会　2018/09

  77. Growth of FeNiN films toward formation of L10-ordered FeNi films by nitrogen topotactic extraction

    Keita Ito, Masaki Mizuguchi, Fumiya Takata, Takashi Suemasu, Hideto Yanagihara, Koki Takanashi

    21st International Conference on Magnetism　2018/07

  78. FeNi窒化物薄膜のエピタキシャル成長と磁気特性 Invited

    伊藤啓太, 末益崇, 高梨弘毅

    第25回みちのく磁性談話会　2018/05

  79. 高規則度L10-FeNi薄膜の作製に向けたFeNiN薄膜の作製

    伊藤啓太, 高梨弘毅

    第65回応用物理学会春季学術講演会　2018/03

  80. hcp-Ru下地層上に作製したCo/Ni人工格子の構造と磁気特性

    伊藤啓太, 菊池直登, 関剛斎, 高梨弘毅

    日本金属学会2018年春季(第162回)講演大会　2018/03

  81. Magnetic properties of CoNi superlattices on Ru/Al2O3(11-20)

    Naoto Kikuchi, Keita Ito, Takeshi Seki, Koki Takanashi

    Junjiro Kanamori Memorial International Symposium　2017/09

  82. Nitrogen insertion to L10-ordered FeNi alloys

    Keita Ito, Koki Takanashi

    Junjiro Kanamori Memorial International Symposium　2017/09

  83. Ru下地層上のCoNi人工格子の磁気特性

    菊池直登, 伊藤啓太, 関剛斎, 高梨弘毅

    第41回日本磁気学会学術講演会　2017/09

  84. XMCD測定によるNixFe4-xN(x = 1, 3)薄膜中の3d元素の優先占有サイトの評価

    高田郁弥, 伊藤啓太, 都甲薫, 竹田幸治, 斎藤祐児, 高梨弘毅, 木村昭夫, 末益崇

    第78回応用物理学会秋季学術講演会　2017/09

  85. L10-FeNi規則合金への窒素添加効果

    伊藤啓太, 高梨弘毅

    第78回応用物理学会秋季学術講演会　2017/09

  86. Ru下地層上に作製したCo/Ni人工格子の構造および磁気特性

    菊池直登, 伊藤啓太, 関剛斎, 高梨弘毅

    日本金属学会2017年春季(第160回)講演大会　2017/03

  87. Minority spin transport in epitaxially grown NiFe3N and Ni3FeN films

    Keita Ito, Fumiya Takata, Kazuki Kabara, Masakiyo Tsunoda, Takashi Suemasu

    4th JSPS Core-to-Core Workshop on "New-Concept spintronics Devices"　2016/11

  88. NixFe4-xN(x = 1, 3)薄膜の負の異方性磁気抵抗効果

    高田郁弥, 伊藤啓太, 鹿原和樹, 東小薗創真, 具志俊希, 都甲薫, 角田匡清, 末益崇

    第77回応用物理学会秋季学術講演会　2016/09

  89. MBE法で作製したα'-Fe16-xMnxN2(x=0,1,2)薄膜の磁気特性

    東小薗創真, 伊藤啓太, 具志俊希, 高田郁弥, 都甲薫, 末益崇

    第77回応用物理学会秋季学術講演会　2016/09

  90. Minority spin transport in epitaxially grown nickel-iron nitride films

    FumiyaTakata, Keita Ito, Kazuki Kabara, Soma Higashikozono, Toshiki Gushi, Kaoru Toko, Masakiyo Tsunoda, Takashi Suemasu

    International Conference on Solid State Devices and Materials 2016　2016/09

  91. エピタキシャルNixFe4-xN(x = 0, 1, 3, 4)薄膜の磁気物性の評価

    伊藤啓太, 鹿原和樹, 高田郁弥, 東小薗創真, 具志俊希, 都甲薫, 角田匡清, 末益崇

    第40回日本磁気学会学術講演会　2016/09

  92. Highly oriented epitaxial (α''+α')-Fe16N2 films on α-Fe(001) buffered MgAl2O4(001) substrates and their magnetizations

    Soma Higashikozono, Keita Ito, Fumiya Takata, Toshiki Gushi, Kaoru Toko, Takashi Suemasu

    18th International Conference on Crystal Growth and Epitaxy　2016/08

  93. Band alignments at native oxide/BaSi2 and amorphous-Si/BaSi2 interfaces measured by hard x-ray photoelectron spectroscopy

    Ryota Takabe, Hiroki Takeuchi, Weijie Du, Keita Ito, Kaoru Toko, Shigenori Ueda, Akio Kimura, Takashi Suemasu

    43rd IEEE Photovoltaic Specialists Conference　2016/08

  94. MgAl2O4基板上への高配向(α''+α')-Fe16N2薄膜のエピタキシャル成長

    東小薗創真, 伊藤啓太, 具志俊希, 都甲薫, 末益崇

    第63回応用物理学会春季学術講演会　2016/03

  95. MBE法による強磁性窒化物NixFe4-xN薄膜のエピタキシャル成長

    高田郁弥, 伊藤啓太, 具志俊希, 東小薗創真, 都甲薫, 末益崇

    第63回応用物理学会春季学術講演会　2016/03

  96. 異方性磁気抵抗効果を利用したFe4N細線における磁壁の電流検出

    具志俊希, 伊藤啓太, 東小薗創真, 都甲薫, 大里啓孝, 杉本喜正, 本多周太, 末益崇

    第63回応用物理学会春季学術講演会　2016/03

  97. 硬X線光電子分光法によるa-Si/BaSi2のバンドアライメント測定

    高部涼太, 武内大樹, Weijie Du, 伊藤啓太, 都甲薫, 上田茂典, 木村昭夫, 末益崇

    第63回応用物理学会春季学術講演会　2016/03

  98. 垂直磁気異方性をもつ正方晶フェリ磁性Mn4N薄膜の磁気構造

    伊藤啓太, 具志俊希, 東小薗創真, 都甲薫, 白井正文, 角田匡清, 末益崇

    第63回応用物理学会春季学術講演会　2016/03

  99. Perpendicular magnetic anisotropy of CoxMn4-xN (x = 0 and 0.2) epitaxial films on SrTiO3(001) substrates

    Keita Ito, Yoko Yasutomi, Kazuki Kabara, Toshiki Gushi, Soma Higashikozono, Kaoru Toko, Masakiyo Tsunoda, Takashi Suemasu

    13th Joint Conference on Magnetism and Magnetic Materials and Intermag　2016/01

  100. 硬X線光電子分光法による自然酸化膜/BaSi2のバンドオフセット測定

    高部涼太, 伊藤啓太, Weijie Du, 都甲薫, 上田茂典, 木村昭夫, 末益崇

    第76回応用物理学会秋季学術講演会　2015/09

  101. Fe4N細線における磁壁物性の細線形状依存性の評価

    具志俊希, 伊藤啓太, 東小薗創真, 都甲薫, 大里啓孝, 杉本喜正, 本多周太, 末益崇

    第76回応用物理学会秋季学術講演会　2015/09

  102. α-Fe下地を用いたMgAl2O4基板上へのα '-Fe-N のエピタキシャル成長

    東小薗創真, 伊藤啓太, 具志俊希, 都甲薫, 末益崇

    第76回応用物理学会秋季学術講演会　2015/09

  103. Fe4Nエピタキシャル薄膜の窒素原子占有度の評価

    伊藤啓太, 具志俊希, 東小薗創真, 竹田幸治, 斎藤祐児, 都甲薫, 柳原英人, 角田匡清, 小口多美夫, 木村昭夫, 喜多英治, 末益崇

    第39回日本磁気学会学術講演会　2015/09

  104. Observation and control of magnetic domain structure in Fe4N ferromagnetic nanowire

    Toshiki Gushi, Keita Ito, Syuta Honda, Yoko Yasutomi, Somo Higashikozono, Kaoru Toko, Hirotalka Oosato, Yoshimasa Sugimoto, Kiyoshi Asakawa, Norio Ota, Takashi Suemasu

    Asian School-Conference on Physics and Technology of Nanostructured Materials 2015　2015/08

  105. Epitaxial growth of (α"+α')-Fe-N films by molecular beam epitaxy and their saturation magnetizations

    Soma Higashikozono, Keita Ito, Toshiki Gushi, Kaoru Toko, Takashi Suemasu

    第34回電子材料シンポジウム　2015/07

  106. Control of domain wall position in L-shaped Fe4N negatively spin polarized ferromagnetic nanowire

    Toshiki Gushi, Keita Ito, Syuta Honda, Yoko Yasutomi, Soma Higashikozono, Kaoru Toko, Hirotaka Oosato, Yoshimasa Sugimoto, Kiyoshi Asakawa, Norio Ota, Takashi Suemasu

    IEEE International Magnetics Conference 2015　2015/05

  107. 負のスピン分極率を有するFe4N強磁性細線の磁壁形成位置の制御

    具志俊希, 伊藤啓太, 安富陽子, 東小薗創真, 都甲薫, 大里啓孝, 杉本喜正, 浅川潔, 太田憲雄, 本多周太, 末益崇

    第62回応用物理学会春季学術講演会　2015/03

  108. MBE法によるα"-Fe16N2薄膜のエピタキシャル成長

    東小薗創真, 伊藤啓太, 安富陽子, 具志俊希, 都甲薫, 末益崇

    第62回応用物理学会春季学術講演会　2015/03

  109. CoxMn4-xN エピタキシャル薄膜の飽和磁化と垂直磁気異方性の評価

    伊藤啓太, 安富陽子, 鹿原 和樹, 具志俊希, 東小薗創真, 都甲薫, 角田匡清, 末益崇

    第62回応用物理学会春季学術講演会　2015/03

  110. Mössbauer study on epitaxial CoxFe4-xN films grown by molecular beam epitaxy

    Keita Ito, Tatsunori Sanai, Yoko Yasutomi, Toshiki Gushi, Kaoru Toko, Hideto Yanagihara, Masakiyo Tsunoda, Eiji Kita, Takashi Suemasu

    59th Annual Conference on Magnetism and Magnetic Materials　2014/11

  111. Magnetic properties of anti-perovskite type transition metal ferromagnetic nitrides Invited

    Keita Ito, Takashi Suemasu

    226th Meeting of the Electrochemical Society　2014/10

  112. くの字型及び円弧状Fe4N強磁性細線の作製と磁区観察

    具志俊希, 伊藤啓太, 安富陽子, 都甲薫, 大里啓孝, 杉本喜正, 浅川潔, 太田憲雄, 本多周太, 末益崇

    第75回応用物理学会秋季学術講演会　2014/09

  113. CoxMn4-xN薄膜における磁気特性のCo/Mn比依存性

    安富陽子, 伊藤啓太, 具志俊希, 都甲薫, 末益崇

    第75回応用物理学会秋季学術講演会　2014/09

  114. CoxFe4-xN(x = 0, 1, 3)エピタキシャル膜のメスバウアー測定

    伊藤啓太, 佐内辰徳, 安富陽子, 具志俊希, 都甲薫, 柳原英人, 角田匡清, 喜多英治, 末益崇

    第75回応用物理学会秋季学術講演会　2014/09

  115. Fabrication and control of magnetic domain structure in Fe4N ferromagnetic nanowires

    Toshiki Gushi, Keita Ito, Tatsunori Sanai, Yoko Yasutomi, Kaoru Toko, Hirotaka Osato, Yoshimasa Sugimoto, Kiyoshi Asakawa, Norio Ota, Syuta Honda, Takashi Suemasu

    第33回電子材料シンポジウム　2014/07

  116. Growth and magnetic characterization of CoxMn4-xN thin films by molecular beam epitaxy

    Yoko Yasutomi, Keita Ito, Toshiki Gushi, Kaoru Toko, Takashi Suemasu

    第33回電子材料シンポジウム　2014/07

  117. Magnetic properties of CoxFe4-xN and CoxMn4-xN thin films by molecular beam epitaxy

    Keita Ito,Yoko Yasutomi,Toshiki Gushi,Siyuan Zhu,Munisa Nurmamat,Kaoru Toko,Yukiharu Takeda,Yuji Saitoh,Akio Kimura,Eiji Kita,Takashi Suemasu

    第33回電子材料シンポジウム　2014/07

  118. Fe4N強磁性細線の作製と磁気力顕微鏡による磁区観察

    具志俊希, 伊藤啓太, 佐内辰徳, 安富陽子, 都甲薫, 大里啓孝, 杉本喜正, 浅川潔, 太田憲雄, 本多周太, 末益崇

    第61回応用物理学会春季学術講演会　2014/03

  119. MBE法により作製したCoxMn4-xN薄膜の磁気特性評価

    安富陽子, 伊藤啓太, 佐内辰徳, 具志俊希, 都甲薫, 末益崇

    第61回応用物理学会春季学術講演会　2014/03

  120. CoxMn4-xN(x = 0, 0.8)薄膜のX線磁気円二色性

    伊藤啓太, 安富陽子, 朱思源, Munisa Nurmamat, 佐内辰徳, 都甲薫, 竹田幸治, 斎藤祐児, 木村昭夫, 末益崇

    第61回応用物理学会春季学術講演会　2014/03

  121. Perpendicular magnetic anisotropy of Mn4N films on SrTiO3(001)

    Yoko Yasutomi, Keita Ito, Tatsunori Sanai, Kaoru Toko, Takashi Suemasu

    58th Annual Conference on Magnetism and Magnetic Materials　2013/11

  122. X-ray magnetic circular dichroism for Co3FeN films grown by molecular beam epitaxy

    Keita Ito, Tatsunori Sanai, Yoko Yasutomi, Siyuan Zhu, Kaoru Toko, Yukiharu Takeda, Yuji Saitoh, Akio Kimura, Takashi Suemasu

    58th Annual Conference on Magnetism and Magnetic Materials　2013/11

  123. 放射光を利用した強磁性体(Co,Fe)4N薄膜の物性評価 Invited

    伊藤啓太, 都甲薫, 上田茂典, 竹田幸治, 斎藤祐児, 宮本幸治, 奥田太一, 今井庸二, 木村昭夫, 末益崇

    SPring-8シンポジウム2013　2013/09

  124. MBE法により作製したCoxFe1-xNエピタキシャル膜の磁気異方性

    佐内辰徳, 伊藤啓太, 安富陽子, 都甲薫, 末益崇

    第74回応用物理学会学術講演会　2013/09

  125. MBE法により作製したMn4N薄膜の垂直磁気異方性の評価

    安富陽子, 佐内辰徳, 伊藤啓太, 都甲薫, 末益崇

    第74回応用物理学会学術講演会　2013/09

  126. XMCDスペクトル形状から見るFe4N薄膜の局所電子構造

    伊藤啓太, 佐内辰徳, 安富陽子, 都甲薫, 竹田幸治, 斎藤祐児, 小口多美夫, 木村昭夫, 末益崇

    第74回応用物理学会秋季学術講演会　2013/09

  127. Epitaxial growth and magnetic characterization of Co4-xFexN(x=0.4~2.9) thin films grown by molecular beam epitaxy

    Tatsunori Sanai, Keita Ito, Yoko Yasutomi, Kaoru Toko, Takashi Suemasu

    第32回電子材料シンポジウム　2013/07

  128. Epitaxial growth of (CoMn)4N thin films by molecular beam epitaxy

    Yoko Yasutomi, Tatsunori Sanai, Keita Ito, Kaoru Toko, Takashi Suemasu

    第32回電子材料シンポジウム　2013/07

  129. Negative spin-polarization in Fe4N grown by molecular beam epitaxy

    Keita Ito,Kazunori Harada,Tatsunori Sanai,Kazuaki Okamoto,Kazuki Kabara,Hirokazu Takahashi,Kaoru Toko,Shigenori Ueda,Yoji Imai,Koji Miyamoto,Taichi Okuda,Masakiyo Tsunoda,Akio Kimura,Takashi Suemasu

    第32回電子材料シンポジウム　2013/07

  130. MBE法により作製したエピタキシャルCo3FeN薄膜の負のAMR効果

    佐内辰徳, 伊藤啓太, 都甲薫, 鹿原和樹, 角田匡清, 末益崇

    第60回応用物理学会春季学術講演会　2013/03

  131. MBE法によるMn4N薄膜の成長

    安富陽子, 佐内辰徳, 伊藤啓太, 都甲薫, 末益崇

    第60回応用物理学会春季学術講演会　2013/03

  132. MBE法により作製したエピタキシャルCo3FeN薄膜のXMCD測定

    伊藤啓太, 佐内辰徳, 安富陽子, 都甲薫, 竹田幸治, 齋藤祐児, 今井庸二, 木村昭夫, 末益崇

    第60回応用物理学会春季学術講演会　2013/03

  133. MBE法により作製した(Co, Fe)4Nエピタキシャル膜の磁気特性評価

    佐内辰徳, 伊藤啓太, 都甲薫, 末益崇

    第73回応用物理学会学術講演会　2012/09

  134. Epitaxial growth of CoxFe4-xN (0.4<x<2.9) thin films on SrTiO3(001) grown by molecular beam epitaxy

    Tatsunori Sanai, Keita Ito, Kaoru Toko, Takashi Suemasu

    17th International Conference of Molecular Beam Epitaxy　2012/09

  135. Negative spin polarization of Fe4N observed by spin resolved photoemission spectroscopy

    Keita Ito, Kazunori Harada, Kazuaki Okamoto, Tatsunori Sanai, Kaoru Toko, Shigenori Ueda, Yoji Imai, Koji Miyamoto, Taichi Okuda, Akio Kimura, Tahashi Suemasu

    19th International Conference on Magnetism　2012/07

  136. Negative spin-polarization in ferromagnetic Fe4N films

    Keita Ito, Kazunori Harada, Tatsunori Sanai, Kazuaki Okamoto, Kazuki Kabara, Hirokazu Takahashi, Kaoru Toko, Shigenori Ueda, Yoji Imai, Koji Miyamoto, Taichi Okuda, Masakiyo Tsunoda, Akio Kimura, Takashi Suemasu

    8th International Nanotechnology Conference on Communication and Cooperation　2012/05

  137. 光電子分光法を用いたFe3Siの価電子帯スペクトルとスピン偏極度の評価

    原田一範, 伊藤啓太, 眞壁健司, 岡本和晃, 都甲薫, 叶茂, 宮本幸司, 奥田太一, 上田茂典, 木村昭夫, 末益崇

    第59回応用物理学関係連合講演会　2012/03

  138. MBE法による強磁性(Fe,Co)4N薄膜のエピタキシャル成長

    佐内辰徳, 伊藤啓太, 都甲薫, 末益崇

    第59回応用物理学関係連合講演会　2012/03

  139. スピン分解光電子分光によるFe4N薄膜の負のスピン分極の観測

    伊藤啓太, 原田一範, 佐内辰徳, 岡本和晃, 都甲薫, 上田茂典, 今井庸二, 宮本幸治, 奥田太一, 木村昭夫, 末益崇

    第59回応用物理学関係連合講演会　2012/03

  140. MBE法により成長したエピタキシャル強磁性窒化物薄膜のXMCD測定

    伊藤啓太, 原田一範, 竹田幸治, 齋藤祐児, 都甲薫, 末益崇, 木村昭夫, 秋永広幸

    第72回応用物理学会学術講演会　2011/08

  141. XMCD measurement for γ'-Fe4N thin films grown by MBE

    Keita Ito, Geun Hyoung Lee, Kazunori Harada, Mao Ye, Yukiharu Takeda, Yuji Saitoh, Takashi Suemasu, Akio Kimura, Hiro Akinaga

    Asian School-Conference on Physics and Technology of Nanostructured Materials 2011　2011/08

  142. Magnetic moment of γ’-Fe4N thin films by XMCD

    Keita Ito, Geun Hyoung Lee, Kazunori Harada, Mitsushi Suzuno, Mao Ye, Yukiharu Takeda, Yuji Saitoh, Takashi Suemasu, Akio Kimura, Hiro Akinaga

    5th International Workshop on Spin Currents　2011/07

  143. XMCD measurement of molecular beam epitaxy γ’-Fe4N thin films on LaAlO3(100) and MgO(100) substrates

    Keita Ito, Geun Hyoung Lee, Kazunori Harada, Mao Ye, Yukiharu Takeda, Yuji Saitoh, Takashi Suemasu, Akio Kimura, Hiro Akinaga

    Electronic Materials Conference 2011　2011/06

  144. XMCD measurement of γ’-Fe4N thin films on LAO(001) and MgO(001) substrates by molecular beam epitaxy

    Keita Ito, Geun Hyoung Lee, Kazunori Harada, Mitsushi Suzuno, Mao Ye, Takashi Suemasu, Akio Kimura, Hiro Akinaga

    IEEE International Magnetics Conference 2011　2011/05

  145. MBE法により作製したエピタキシャルFe4N薄膜のXMCD測定

    伊藤啓太, 李根衡, 原田一範, 叶茂, 竹田幸治, 齋藤祐児, 末益崇, 木村昭夫, 秋永広幸

    第58回応用物理学関係連合講演会　2011/03

  146. 異種基板上への強磁性Fe4N薄膜の分子線エピタキシーと磁気特性

    伊藤啓太, 李根衡, 叶茂, 原田一範, 末益崇, 木村昭夫, 秋永広幸

    第15回半導体スピン工学の基礎と応用　2010/12

  147. Spintronic materials and the application to Si-based devices Invited

    Hiro Akinaga, Hisashi Shima, Kenji Sadakuni-Makabe, Kazunori Harada, Keita Ito, Takashi Suemasu

    1st International Conference of Asian Union of Magnetics Societies　2010/12

  148. MBE法によるSi(100)基板上への強磁性体γ'-Fe4Nのエピタキシャル成長

    李根衡, 伊藤啓太, 末益崇

    第71回応用物理学会学術講演会　2010/09

  149. SrTiO3(001)基板上に作製したエピタキシャルFe4N薄膜のXMCD測定

    伊藤啓太, 叶茂, 鈴野光史, 原田一範, 李根衡, 末益崇, 木村昭夫, 秋永広幸

    第71回応用物理学会学術講演会　2010/09

  150. Toward the epitaxial growth of ferromagnetic γ'-Fe4N on Si(001) substrates by molecular beam epitaxy

    Geun Hyoung Lee, Keita Ito, Takashi Suemasu

    Asia-Pacific Conference on Semiconducting Silicides and Related Materials Science and Technology Towards Sustainable Optelectronics 2010　2010/07

  151. Epitaxial growth of ferromagnetic Fe4N thin films on SrTiO3(001) substrates by molecular beam epitaxy

    Keita Ito, Geun Hyoung Lee, Takashi Suemasu

    International Symposium on Advanced Magnetic Materials and Applications 2010　2010/07

  152. MgO(001)基板への高配向強磁性Fe4N薄膜のMBE成長

    伊藤啓太, 李根衡, 末益崇

    第57回応用物理学関係連合講演会　2010/03

  153. ECR-NH3を用いた強磁性Fe4N薄膜のエピタキシャル成長

    伊藤啓太, 李根衡, 末益崇, 高橋有紀子, 宝野和博

    第70回応用物理学会学術講演会　2009/09

  154. Molecular beam epitaxy and magnetoresistance in Fe4N/MgO/Fe4N magnetic tunnel junction

    Keita Ito, Akari Narahara, Hiro Akinaga, Takashi Suemasu

    18th International Conference on Electronic Properties of Two-Dimensional Systems　2009/07

  155. MgO基板上の強磁性窒化鉄Fe4Nを用いたMTJ構造の作製と評価

    楢原明理, 伊藤啓太, 末益崇, Ammanabrolu Rajanikanth, 高橋有紀子, 宝野和博

    第56回応用物理学関係連合講演会　2009/04

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Industrial Property Rights 3

  1. 正方晶系薄膜構造体

    西尾 隆宏, 伊藤 啓太, 高梨 弘毅

    特許第7587795号

    Property Type: Patent

  2. 正方晶系薄膜構造体

    西尾 隆宏, 藏 裕彰, 伊藤 啓太, 高梨 弘毅, 市村 匠, 柳原 英人

    Property Type: Patent

  3. 磁気装置

    Syuta Honda, Takashi Suemasu, Keita Ito

    Property Type: Patent

Research Projects 7

  1. 強磁性窒化鉄薄膜への第三元素添加と多層構造化による異常ネルンスト効果の増大

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    2021/04 - 2024/03

  2. Renaissance of Metallic Superlattices

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: Tohoku University

    2018/06 - 2023/03

  3. シリコン基板上への軽元素侵入型垂直磁化膜の創製

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Tohoku University

    2017/04 - 2020/03

  4. Fabrication of Antiferromagnetically-coupled metallic superlattices for highly efficient spin orbit torque

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2018/04 - 2019/03

  5. 垂直磁気異方性を有する軽元素侵入型強磁性体薄膜の成長と磁気特性の評価

    伊藤啓太

    Offer Organization: 公益財団法人 村田学術振興財団

    System: 第33回(平成29年度)研究助成

    2017/04 - 2018/03

  6. シリコン基板上への高スピン偏極強磁性薄膜の創製とスピントロニクスデバイスへの展開

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows (PD)

    Category: Grant-in-Aid for JSPS Fellows

    Institution: Tohoku University

    2014/04 - 2016/08

  7. 高スピン偏極強磁性窒化物のエピタキシャル成長とスピントロニクスデバイスの作製

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows (DC2)

    Category: Grant-in-Aid for JSPS Fellows

    Institution: University of Tsukuba

    2012 - 2013

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Social Activities 1

  1. 平成30年度 東北大学金属材料研究所出前授業

    2018/11 -

Media Coverage 2

  1. 東北大、窒化鉄の磁気正負反転 ひずみを変調

    日刊工業新聞社　日刊工業新聞　紙面

    2025/04/10

    Type: Newspaper, magazine

  2. 東北大、NIMSと共同で強磁性窒化鉄において磁気ひずみの巨大変調を実証

    日本経済新聞社　日本経済新聞 電子版

    2025/04/03

    Type: Internet