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Development of New Energy Harvesting Thin Film Materials Utilizing Effect of Magnetic Easy Axis Switching

Research Project

Project/Area Number 16K14372
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Physical properties of metals/Metal-base materials
Research InstitutionTokyo Institute of Technology

Principal Investigator

SHI JI  東京工業大学, 物質理工学院, 教授 (70293123)

Co-Investigator(Kenkyū-buntansha) 春本 高志  東京工業大学, 物質理工学院, 助教 (80632611)
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords磁気異方性 / 磁気弾性効果 / エネルギー変換 / 応力・歪み測定 / 応力導入 / 応力 / 金属物性 / 磁性
Outline of Final Research Achievements

In this work, we try to establish a new energy harvesting technique by utilizing the effect that the magnetization easy axis of CoPt/AlN multilayers can be change from in-plane direction to perpendicular direction by changing the sign of elastic strain inside the CoPt layers. We tried several methods to introduce elastic strain externally to the CoPt layers, which include deposition of an extra Pd layer, hydrogen absorbing of the Pd layer, or using flexible substrate materials that can be bent mechanically. The results have shown that by introducing strain to the CoPt/AlN multilayer, we definitely can switch the magnetic easy axis from perpendicular direction to in-plane direction. This opens the possibility of using such material as an energy harvesting material that transfers vibration energy into electricity.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (10 results)

All 2017

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Acknowledgement Compliant: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] In-situ X-ray diffraction study of hydrogen absorption and desorption processes in Pd thin films: Hydrogen composition dependent anisotropic expansion and its quantitative description2017

    • Author(s)
      Harumoto Takashi、Ohnishi Yusuke、Nishio Keishi、Ishiguro Takashi、Shi Ji、Nakamura Yoshio
    • Journal Title

      AIP Advances

      Volume: 7 Issue: 6 Pages: 065108-065108

    • DOI

      10.1063/1.4986214

    • NAID

      120006582606

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] X-ray diffraction study on a (111)-textured palladium thin film under hydrogen loading and unloading: film structure evolution and its mechanism2017

    • Author(s)
      Harumoto Takashi、Suzuki Yuichi、Shi Ji、Nakamura Yoshio
    • Journal Title

      Journal of Applied Crystallography

      Volume: 50 Issue: 5 Pages: 1478-1489

    • DOI

      10.1107/s1600576717012638

    • NAID

      120006582636

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of nitrogen incorporation on the ordering transformation of CoPt in CoPt/TiN bilayer films2017

    • Author(s)
      Caesario Petrus、Harumoto Takashi、Nakamura Yoshio、Shi Ji
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 443 Pages: 22-28

    • DOI

      10.1016/j.jmmm.2017.07.038

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] NiO spacer mediated anisotropy in L10-FePt/NiO/A1-FePt trilayer structures2017

    • Author(s)
      Tenghua Gao, Takashi Harumoto, Song Zhang, Rong Tu, Liangmeng Zhang, Yoshio Nakamura, Ji Shi
    • Journal Title

      Physical Review B

      Volume: 95 Issue: 13

    • DOI

      10.1103/physrevb.95.134406

    • Related Report
      2017 Annual Research Report 2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Rhombohedral distortion analysis on Pd(111) films under hydrogen loading2017

    • Author(s)
      Takashi Harumoto, Takashi Ishiguro, Ji Shi, Yoshio Nakamura
    • Organizer
      IUCr 2017 Congress
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Film structure evolution during metal-metal hydride phase transformation: in-situ diffraction study on (111) textured Pd films2017

    • Author(s)
      Takashi Harumoto, Ji Shi and Yoshio Nakamura
    • Organizer
      PCOS 2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 水素化におけるPd(111)配向薄膜の異方的格子伸縮とその定量評価2017

    • Author(s)
      春本高志
    • Organizer
      日本金属学会2017年秋期講演大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] スパッタリング法により作製したPt 膜中の 混入ガス放出過程 高温その場XRD 観察2017

    • Author(s)
      加藤広基, 春本高志, 史蹟, 中村吉男
    • Organizer
      日本金属学会2017年秋期講演大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Nitrogen Enhanced Ordering Transformation of CoPt in CoPt/TiN Bilayer Films2017

    • Author(s)
      Caesario Petrus、Harumoto Takashi、Nakamura Yoshio、Shi Ji
    • Organizer
      62nd Annual Conference on Magnetism and Magnetic Materials
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Perpendicular Magnetic anisotropy and Room Temperature Perpendicular exchange bias in CoNi/(Co,Ni)O multilayers2017

    • Author(s)
      Hangxian Gao,Takashi Harumoto, Yoshio Nakamura, Ji Shi
    • Organizer
      62nd Annual Conference on Magnetism and Magnetic Materials
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2019-03-29  

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