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Electric field induced spinwave generation and its magnonics device application

Research Project

Project/Area Number 18H01862
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 29010:Applied physical properties-related
Research InstitutionKyushu Institute of Technology

Principal Investigator

Fukuma Yasuhiro  九州工業大学, 大学院情報工学研究院, 教授 (90513466)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2018: ¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
Keywordsスピントロニクス / 界面磁気異方性 / スピン波 / マグノニクス / パラメトリック励振 / 多数決論理演算 / マグノン / 電界効果 / 干渉
Outline of Final Research Achievements

Electric-field controlled magnetization dynamics and low-relaxation magnetic materials are an important integrant in low power magnonics devices. Firstly, we demonstrate electric-field induced parametric excitation for CoFeB/MgO junctions by using interfacial in-plane magnetic anisotropy. When the in-plane magnetic anisotropy and the external magnetic field is parallel to each other, spinwave is efficiently excited by using electric-field induced parametric excitation. Its wavelength and wavenumber is tuned by changing input power and frequency of the applied voltage. Secondly, we report facet dependent induced magneto-crystalline anisotropy and its effect on magnetization relaxation parameters in 40 nm sputter deposited monocrystalline single phase Y3Fe5O12 thin films. For the (111) oriented sample, the relaxation shows a minimum which is no significant anisotropic direction and then the spinwave with smaller relaxation is observed.

Academic Significance and Societal Importance of the Research Achievements

スピン波とは、双極子であるスピンの歳差運動が位相を変えながら試料中を波のように伝搬する現象である。電荷の移動を伴わないことからジュール損失がない。このために、本研究にて開発した電界効果によるナノ波長スピン波の生成技術を活用して、発熱が極めて少ない低消費電力電子デバイスの開発が期待される。
また、本研究にてスピン波励起に成功したMgO/CoFeB接合は、ハードディスクドライブ用磁気ヘッドや磁気ランダムアクセスメモリ応用におけるトンネル磁気抵抗素子として実用化されている。数十nmサイズまでの素子作製技術が確立されており、既存のCMOS技術とも高い整合性をもつことから、迅速な応用展開が期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (19 results)

All 2020 2019 2018 Other

All Int'l Joint Research (4 results) Journal Article (7 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 7 results) Presentation (8 results) (of which Int'l Joint Research: 8 results,  Invited: 4 results)

  • [Int'l Joint Research] Nanyang Technological University(シンガポール)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Inter University Accelerator Centre/University of Delhi(インド)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Delhi/Inter University Accelerator Center(インド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Nanyang Technological University(シンガポール)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Enhanced Spin Hall Effect in S-Implanted Pt2020

    • Author(s)
      U. Shashank, R. Medwal, T. Shibata, R. Nongjai, J. V. Vas, M. Duchamp, K. Asokan, R. S. Rawat, H. Asada, S. Gupta, Y. Fukuma
    • Journal Title

      Advanced Quantum Technologies

      Volume: 2010453 Issue: 1 Pages: 1-7

    • DOI

      10.1002/qute.202000112

    • NAID

      120007174957

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Magnetoimpedance of epitaxial Y3Fe5O12 (001) thin film in low frequency regime2020

    • Author(s)
      R. Medwal, U. Chaudhuri, J. V. Vas, A. Deka, S. Gupta, M. Duchamp, H. Asada, Y. Fukuma, R. Mahendiran, R. S. Rawat
    • Journal Title

      ACS Applied Materials & interfaces

      Volume: 12 Issue: 37 Pages: 41802-10809

    • DOI

      10.1021/acsami.0c13213

    • NAID

      120007139287

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electric-field control of interfacial in-plane magnetic anisotropy in CoFeB/MgO junctions2020

    • Author(s)
      A. Deka, B. Rana, R. Anami, K. Miura, H. Takahashi, Y. Otani, Y. Fukuma
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 17 Pages: 1744051-8

    • DOI

      10.1103/physrevb.101.174405

    • NAID

      120007041716

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Modulation of Magnetization Precession Trajectories by Perpendicular Magnetic Anisotropy in CoFeB Thin Films2020

    • Author(s)
      A. Deka, I. Tanaka, J. R. Mohan, Y. Fukuma
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 56 Issue: 7 Pages: 43002051-5

    • DOI

      10.1109/tmag.2020.2987288

    • NAID

      120007041715

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simulations on the Effect of Magnetic Anisotropy on Switching of an Easy Cone Magnetized Free Layer2020

    • Author(s)
      A. Deka, K. Sato, I. Tanaka, Y. Fukuma
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 56 Issue: 3 Pages: 67024041-4

    • DOI

      10.1109/tmag.2019.2942339

    • NAID

      120006843477

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin Seebeck Effect in Neodymium Iron Garnet Multilayers2019

    • Author(s)
      S. Tyagi, T. Maeda, K. Kimura, S. Gupta, K. Kishimoto, T. Koyanagi, H. Asada, Y. Fukuma
    • Journal Title

      Sensors and Materials

      Volume: 31 Issue: 8 Pages: 2541

    • DOI

      10.18494/SAM.2019.2335

    • NAID

      120006719303

    • ISSN
      0914-4935, 2435-0869
    • Year and Date
      2019-08-19
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin pumping in asymmetric Fe50Pt50/Cu/Fe20Ni80 trilayer structure2019

    • Author(s)
      R. Medwal, S. Gupta, R. S. Rawat, A. Subramanian, Y. Fukuma
    • Journal Title

      Physica Status Solidi-rapid research letters

      Volume: 1900267 Issue: 10 Pages: 1-9

    • DOI

      10.1002/pssr.201900267

    • NAID

      120006865694

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Spin to charge conversion for terahertz spintronics2020

    • Author(s)
      Y. Fukuma, S. Gupta, R. Medwal, R. S. Rawat, P. Agarwal, R. Singh
    • Organizer
      47th IEEE International conference on Plasma Sciences and 2nd Asia-Pacific conference on Plasma and Terahertz Science
    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Voltage controlled magnetization dynamics of NiFe on PMN-PT single crystal2020

    • Author(s)
      M. J. Rex, K. Ushima, S. Gupta, Y. Fukuma, R .S. Rawat, R. Medwal
    • Organizer
      47th IEEE International conference on Plasma Sciences and 2nd Asia-Pacific conference on Plasma and Terahertz Science
    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High charge-to-spin interconversion in Sulphur implanted Platinum2020

    • Author(s)
      U. Shashank, R. Medwal, T. Shibata, R. Nongjai, J. V. Vas, M. Duchamp, K. Asokan, R. S. Rawat, H. Asada, S. Gupta, Y. Fukuma
    • Organizer
      5th International conference on Emerging Electronics
    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Toward voltage driven spintronic devices2019

    • Author(s)
      Y. Fukuma, A. Deka
    • Organizer
      20th International worshop on the physics of semiconductor devices
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Electric-field induced spin pumping in an in-plane magnetized CoFeB/MgO junction2019

    • Author(s)
      A. Deka, B. Rana, R. Anami, K. Miura, H. Takahashi, Y.C. Otani, Y. Fukuma
    • Organizer
      64th annual conference on Magnetic and Magnetic Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of perpendicular magnetic anisotropy in voltage induced magnetization switching2019

    • Author(s)
      A. Deka, I. Tanaka, K. Sato, Y. Fukuma
    • Organizer
      The 30th Magnetic Recording Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spin current generation by spin pumping2018

    • Author(s)
      Yasuhiro Fukuma
    • Organizer
      International conference on magnetic materials and applications
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Spin pumping, spin Hall effect and spin seebeck effect2018

    • Author(s)
      Yasuhiro Fukuma
    • Organizer
      63rd DAE solid state physics state symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2018-04-23   Modified: 2022-01-27  

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