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Elucidation of physical properties of spin current thermoelectric phenomena using magnetic insulator thin films fabricated by wet process

Research Project

Project/Area Number 20K05255
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 28020:Nanostructural physics-related
Research InstitutionGifu University

Principal Investigator

Yamada Keisuke  岐阜大学, 工学部, 助教 (50721792)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsスピンゼーベック効果 / 磁性ナノ粒子 / 微細構造 / 共沈法 / ゾルゲル法 / グラニュラー / 化学合成プロセス / 熱電変換効率 / YIG / ポリオール法 / グラニュラー構造 / 熱電変換性能 / スピン軌道相互作用 / マグノン / スピントロニクス / 磁性 / マイクロ・ナノデバイス
Outline of Research at the Start

スピントロニクス分野では、エネルギーハーベスティング技術の一つであるスピンゼーベック効果の基礎物性やその効果を上手く利用した熱電素子・温度センサーに関するデバイス開発の研究が盛んに行われている。
本研究では、試料作製プロセスである共沈法を用いて作製した磁性絶縁体ナノ粒子を薄膜化する技術を活用し、スピンゼーベック効果の物性解明と起電力の向上を目指した研究を行う。特にナノ粒子から形成される薄膜の特徴を上手く利用することで、今までに報告されている研究とは異なる角度により「表面微細構造と磁気特性の相関解明」を目指し、スピンゼーベック効果の物性解明に迫る。

Outline of Final Research Achievements

We have fabricated a magnetic thin film composed of nanoparticles by using a chemical fabrication method, and measured the spin Seebeck effect (SSE) and correlated the physical properties of the structure, magnetic properties, and SSE voltage. The purpose of our study is the elucidation of each correlation. (1) In the YIG films prepared by the coprecipitation method, the correlation between the fine structure of the sample and the SSE electromotive force was clarified. (2) In the Bi-YIG films fabricated by the sol-gel method, the spin current conversion efficiency for the Bi-YIG samples increased due to Bi substitution, and the SSE voltage also increased. (3) YIG-Pt granular films were prepared by coprecipitation method and polyol method, and the thermoelectric conversion performance was improved by increasing the ratio of Pt fine particles. We could not only clarify the physical properties of SSE, but also show a technology that can contribute to energy harvesting technology.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果の学術的意義は、様々な化学的プロセスを用いて磁性ナノ粒子を作製、薄膜化し、結晶構造、微細構造、磁気特性、スピン流熱電現象の相関を明らかにしたことである。このことは簡易かつ大量生産が化学プロセスを用いた試料作製によっても、十分にスピン熱電現象が得られることを示した結果で、応用展開や開発の指針となる。また世界で先駆けて化学プロセスによって作製した試料でスピン流熱電現象の観測に成功したことは今後の研究展開にも大きな期待をもてる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (25 results)

All 2023 2022 2021 2020

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 2 results) Presentation (14 results) (of which Int'l Joint Research: 6 results) Book (1 results)

  • [Journal Article] Bismuth composition, thickness, and annealing temperature dependence of the spin Seebeck voltage in Bi-YIG films prepared using sol?gel solution and spin-coating method2022

    • Author(s)
      Yamamoto Mikiya、Masaki Shinya、Shiota Yoichi、Moriyama Takahiro、Kato Takeshi、Ono Teruo、Shima Mutsuhiro、Yamada Keisuke
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 556 Pages: 169416-169416

    • DOI

      10.1016/j.jmmm.2022.169416

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultra-wide-band millimeter-wave generator using spin torque oscillator with strong interlayer exchange couplings2022

    • Author(s)
      Kurokawa Yuichiro、Yamada Keisuke、Taniguchi Tomohiro、Horiike Shu、Tanaka Terumitsu、Yuasa Hiromi
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 10849-10849

    • DOI

      10.1038/s41598-022-15014-y

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Uniaxial in-plane magnetic anisotropy mechanism in Ni, Fe, and Ni-Fe alloy films deposited on single crystal Y-cut 128° LiNbO3 using magnetron sputtering2022

    • Author(s)
      Ito Masayoshi、Ono Shota、Fukui Hayato、Kogirima Keiichi、Maki Natsumi、Hikage Tatsuo、Kato Takeshi、Ohkochi Takuo、Yamaguchi Akinobu、Shima Mutsuhiro、Yamada Keisuke
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 564 Pages: 170177-170177

    • DOI

      10.1016/j.jmmm.2022.170177

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhancement of spin?orbit torques by change in uniaxial in-plane magnetic anisotropy of Py/Pt bilayers on single crystal 128° Y-Cut LiNbO<sub>3</sub> substrate2021

    • Author(s)
      Ito Masayoshi、Yamaguchi Akinobu、Oshima Daiki、Kato Takeshi、Shima Mutsuhiro、Yamada Keisuke
    • Journal Title

      Applied Physics Letters

      Volume: 119 Issue: 15 Pages: 152407-152407

    • DOI

      10.1063/5.0063207

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Textured growth of Co-Fe-Ga alloy films via topotactic transformation from highly oriented precursor and spinel oxide2021

    • Author(s)
      Ohno Yuta、Hayashi Kensuke、Yamada Keisuke、Shima Mutsuhiro
    • Journal Title

      Materials Letters

      Volume: 302 Pages: 130306-130306

    • DOI

      10.1016/j.matlet.2021.130306

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Change of longitudinal spin Seebeck voltage with annealing in Y3Fe5O12 films formed by densely packed nanocrystals2021

    • Author(s)
      Yamada Keisuke、Masaki Shinya、Yamamoto Mikiya、Kondo Keita、Kurokawa Yuichiro、Shiota Yoichi、Moriyama Takahiro、Ono Teruo、Yuasa Hiromi、Shima Mutsuhiro
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 535 Pages: 168093-168093

    • DOI

      10.1016/j.jmmm.2021.168093

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Discrimination of skyrmion chirality via spin?orbit and ?transfer torques for logic operation2021

    • Author(s)
      Nakatani Yoshinobu、Yamada Keisuke、Hirohata Atsufumi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 8415-8415

    • DOI

      10.1038/s41598-021-87742-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dependence of Gilbert damping constant on microstructure in nanocrystalline YIG coatings prepared by co-precipitation and spin-coating on a Si substrate2020

    • Author(s)
      Yamada Keisuke、Kogiso Kazuma、Shiota Yoichi、Yamamoto Mikiya、Yamaguchi Akinobu、Moriyama Takahiro、Ono Teruo、Shima Mutsuhiro
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 513 Pages: 167253-167253

    • DOI

      10.1016/j.jmmm.2020.167253

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Control of current-induced skyrmion motion in ratchet-type skyrmion-based racetrack memory with a loop structure2020

    • Author(s)
      Yamaguchi Riki、Yamada Keisuke、Nakatani Yoshinobu
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: 1 Pages: 010904-010904

    • DOI

      10.35848/1347-4065/abd115

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Controlling skyrmion motion in an angelfish-type racetrack memory by an AC magnetic field2020

    • Author(s)
      Migita Koudai、Yamada Keisuke、Nakatani Yoshinobu
    • Journal Title

      Applied Physics Express

      Volume: 13 Issue: 7 Pages: 073003-073003

    • DOI

      10.35848/1882-0786/ab9efb

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 共沈法とポリオール法で作製したYIG-Ptグラニュラー膜の構造とスピンゼーベック起電力の相関解明2023

    • Author(s)
      松居 秀樹, 嶋 睦宏, 山田 啓介
    • Organizer
      IEEE Magnetics Society 名古屋支部 若手研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Change in longitudinal spin Seebeck voltage with microstructure in YIG films prepared by sol-gel method2022

    • Author(s)
      M. Yamamoto, S. Masaki, H. Matsui, Y. Shiota, T. Moriyama, T. Kato, T. Ono, M. Shima, and K. Yamada
    • Organizer
      2022 Joint MMM-Intermag Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electrical discrimination of magnetic-skyrmion chirality via spin-orbit and -transfer torques in a branched nanowire2022

    • Author(s)
      K. Yamada, A. Hirohata, and Y. Nakatani
    • Organizer
      2022 Joint MMM-Intermag Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Composition dependence of in-plane uniaxial magnetic anisotropy and magnetization reversal behavior in Ni-Fe alloy thin films on a single crystal 128° Y-Cut LiNbO3 substrate2022

    • Author(s)
      M. Ito, N. Maki, A. Yamaguchi, M. Shima, and K. Yamada
    • Organizer
      2022 Joint MMM-Intermag Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Textured growth of Co-Fe-Ga alloy films via topotactic transformation from highly oriented precursor and spinel oxide2022

    • Author(s)
      Y. Ohno, K. Yamada, and M. Shima
    • Organizer
      2022 Joint MMM-Intermag Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Annealing temperature dependence of longitudinal spin Seebeck voltage in YIG films prepared by sol-gel spin coating method2021

    • Author(s)
      K. Yamada, S. Masaki, M. Yamamoto, H. Matsui, and M. Shima
    • Organizer
      IEEE International Magnetics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Discrimination of skyrmion chirality via spin-orbit and -transfer torques for logic operation2021

    • Author(s)
      K. Yamada, A. Hirohata, and Y. Nakatani
    • Organizer
      CRIM 2021: Magnetic Skyrmions
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] スピン軌道トルクおよびスピン移行トルクによる磁気スキルミオンのカイラリティの識別2021

    • Author(s)
      山田啓介,廣畑貴文,仲谷栄伸
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] スピン軌道およびスピン移行トルクによる磁気スキルミオンの電気的なカイラリティの識別2021

    • Author(s)
      山田啓介,廣畑貴文,仲谷栄伸
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 高配向前駆体を用いたトポタクティック変態によるCo-Fe-Ga合金膜の配向制御2021

    • Author(s)
      大野悠太, 山田啓介, 嶋睦宏
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] LiNbO3単結晶基板上の2層構造Py/Ptにおける面内一軸磁気異方性によるスピン軌道トルクの変化2021

    • Author(s)
      伊藤将慶, 山口明啓, 大島大輝, 加藤剛志, 嶋睦宏, 山田啓介
    • Organizer
      第45回 日本磁気学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] LiNbO3単結晶基板上の2層構造Py/Ptにおけるスピン軌道トルクの評価2021

    • Author(s)
      伊藤 将慶, 近藤 慶太, 山口 明啓, 大島 大輝, 加藤 剛志, 嶋 睦宏, 山田 啓介
    • Organizer
      第68回 応用物理学会 春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] YIG ナノ結晶体から形成された薄膜における微細構造とスピンゼーベック起電力の相関解明2020

    • Author(s)
      正木信也, 山本幹也, 近藤慶太, 山田啓介, 黒川雄一郎, 塩田陽一, 森山貴広, 小野輝男, 湯浅裕美, 嶋睦宏
    • Organizer
      第44回 日本磁気学会学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] ナノ結晶体から形成されたCo2FeGa 合金薄膜の配向制御と磁性2020

    • Author(s)
      大野悠太, 山田啓介, 嶋睦宏
    • Organizer
      第44回 日本磁気学会学術講演会
    • Related Report
      2020 Research-status Report
  • [Book] Nanomagnetic materials : fabrication, characterization and application2021

    • Author(s)
      edited by Akinobu Yamaguchi, Atsufumi Hirohata, Bethanie J.H. Stadler
    • Total Pages
      748
    • Publisher
      Elsevier
    • ISBN
      9780128223499
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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