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Development of the electric-field controlled magneto-optical effect

Research Project

Project/Area Number 26709046
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypePartial Multi-year Fund
Research Field Physical properties of metals/Metal-base materials
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

NOZAKI TAKAYUKI  国立研究開発法人産業技術総合研究所, スピントロニクス研究センター, 研究チーム長 (60452405)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥20,670,000 (Direct Cost: ¥15,900,000、Indirect Cost: ¥4,770,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsスピントロニクス / 磁気光学効果 / 電圧制御 / 磁性薄膜 / 電界制御 / Spintronics / Magneto-optical effect / Voltage effect / 電圧効果 / 磁気異方性 / Spintronics / magneto-optical effect / electric-field effect
Outline of Final Research Achievements

This project aimed to develop the technique of electric-field control of magneto-optical effect in a ferromagnetic metal layer. We prepared junction structure by the combination of pulse laser deposition for dielectric materials and molecular beam epitaxy or sputtering techniques for metal materials. We found that SrHfO3 can exhibit a relatively high dielectric constant of about 25 with low leak current, which is suitable for voltage-controlled devices. In the device with FeB ferromagnetic layer, we realized the modification of Kerr rotation angle of 0.03 degree, which corresponds to about 60 fJ/Vm as the voltage-induced anisotropy change. We also found that Pt doping at the Fe/MgO interface is effective to enhance the voltage effect as well as the interface magnetic anisotropy. By combining the developed technique, highly-efficient electric-field control of magneto-optical effects can be expected.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (10 results)

All 2017 2016 2015

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 2 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Journal Article] Large Voltage-Induced Changes in the Perpendicular Magnetic Anisotropy of an MgO-Based Tunnel Junction with an Ultrathin Fe Layer2016

    • Author(s)
      T. Nozaki, A. Koziol-Rachwal, W. Skowronski, V. Zayets, Y. Shiota, S. Tamaru, H. Kubota, A. Fukushima, S. Yuasa, Y. Suzuki
    • Journal Title

      Phys. Rev. Appl.

      Volume: 5 Issue: 4

    • DOI

      10.1103/physrevapplied.5.044006

    • Related Report
      2016 Annual Research Report 2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The effect of the MgO buffer layer thickness on magnetic anisotropy in MgO/Fe/Cr/MgO buffer/MgO(001)2016

    • Author(s)
      A. Koziol-Rachwal, T. Nozaki, V. Zayets, H. Kubota, A. Fukushima, S. Yuasa, Y. Suzuki
    • Journal Title

      J. Appl. Phys.

      Volume: 120 Issue: 8

    • DOI

      10.1063/1.4961203

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Influence of Cr doping on voltage-controlled magnetic anisotropy effect at an ultrathin Fe/MgO interface2017

    • Author(s)
      T. Nozaki, A. Koziol-Rachwal, Y. Shiota, S. Tamaru, H. Kubota, A. Fukushima, Y. Suzuki, S. Yuasa
    • Organizer
      日本応用物理学会
    • Place of Presentation
      パシフィコ横浜、横浜市
    • Year and Date
      2017-03-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] Towards the realization of voltage-torque MRAM ~Prospects and future challenges~2016

    • Author(s)
      T. Nozaki, Y. Shiota, A. Koziol-Rachwal, W. Skowronski, V. Zayets, S. Tamaru, H. Kubota, A. Fukushima, Y. Suzuki, S. Yuasa
    • Organizer
      IEDM2016
    • Place of Presentation
      サンフランシスコ、カリフォルニア州、USA
    • Year and Date
      2016-12-05
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Large voltage-controlled magnetic anisotropy change in epitaxial Cr/ultrathin Fe/MgO/Fe magnetic tunnel junctions2016

    • Author(s)
      T. Nozaki, A. Koziol-Rachwal, W. Skowronski, V. Zayets, Y. Shiota, S. Tamaru, H. Kubota, A. Fukushima, Y. Suzuki, S. Yuasa
    • Organizer
      日本磁気学会
    • Place of Presentation
      金沢大学、金沢市
    • Year and Date
      2016-09-05
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Voltage-controlled magnetic anisotropy in an ultrathin Fe layer sandwiched between Cr and MgO layers2016

    • Author(s)
      T. Nozaki, A. Koziol-Rachwal, W. Skowronski, V. Zayets, Y. Shiota, S. Tamaru, H. Kubota, A. Fukushima, Y. Suzuki, S. Yuasa
    • Organizer
      ICAUMS2016
    • Place of Presentation
      成功大学、台南、台湾
    • Year and Date
      2016-08-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Large voltage-induced anisotropy change in Cr/ultrathin Fe/MgO/Fe magnetic tunnel junctionsⅡ2016

    • Author(s)
      T. Nozaki, A. Koziol-Rachwal, W. Skowronski, K. Yakushiji, Y. Shiota, Z. Zayets, S. Tamaru, H. Kubota, A. Fukushima, Y. Suzuki, and S. Yuasa
    • Organizer
      応用物理学会春季講演会
    • Place of Presentation
      東京都, 東工大大岡山キャンパス
    • Year and Date
      2016-03-22
    • Related Report
      2015 Annual Research Report
  • [Presentation] Large voltage-induced magnetic anisotropy in epitaxial Cr/ultrathin Fe/MgO/Fe magnetic tunnel junction2016

    • Author(s)
      T. Nozaki, A. Koziol-Rachwal, W. Skowronski, K. Yakushiji, Y. Shiota, Z. Zayets, S. Tamaru, H. Kubota, A. Fukushima, Y. Suzuki, and S. Yuasa
    • Organizer
      MMM/INTERMAG 2016 Joint Conference
    • Place of Presentation
      SanDiego, USA, Hilton SanDiego
    • Year and Date
      2016-01-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Large voltage-induced anisotropy change in Cr/ultrathin Fe/MgO/Fe magnetic tunnel junctions2015

    • Author(s)
      T. Nozaki, A. Koziol-Rachwal, W. Skowronski, K. Yakushiji, Y. Shiota, Z. Zayets, S. Tamaru, H. Kubota, A. Fukushima, Y. Suzuki, and S. Yuasa
    • Organizer
      応用物理学会秋季講演会
    • Place of Presentation
      愛知県, 名古屋国際会議場
    • Year and Date
      2015-09-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] Voltage-control of magnetic anisotropy ~What's the next target?~2015

    • Author(s)
      T. Nozaki, A. Koziol-Rachwal, W. Skowronski, K. Yakushiji, Y. Shiota, Z. Zayets, S. Tamaru, H. Kubota, A. Fukushima, Y. Suzuki, and S. Yuasa
    • Organizer
      ICMFS2015
    • Place of Presentation
      Krakow, Poland, AGH Univ.
    • Year and Date
      2015-07-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2014-04-04   Modified: 2018-03-22  

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