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Electric field assited magnetization switching and development of efficient memory devices

Research Project

Project/Area Number 24656229
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Electron device/Electronic equipment
Research InstitutionNagoya University

Principal Investigator

KATO Takeshi  名古屋大学, 工学(系)研究科(研究院), 准教授 (50303665)

Co-Investigator(Kenkyū-buntansha) IWATA Satoshi  名古屋大学, エコトピア科学研究所, 教授 (60151742)
Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords電気・電子材料 / データストレージ / 磁性 / 電子・電気材料
Research Abstract

Temperature dependence of the critical current density of spin transfer torque switching for the CPP-GMR device with rare earth - transition metal alloys has been investigated to show the possibility of the energy efficient writing by controlling the energy barrier of the magnetization switching, and the reduction of the critical current density with temperature was confirmed. Moreover, the ultra-thin Co films were micro-fabricated by the lithography technique and their hysteresis loops with and without an electric field were measured by the anomalous Hall effect to study the effect of the electric field on the energy barrier of the magnetization switching of the ultra thin Co layer.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (21 results)

All 2014 2013 2012 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (12 results) (of which Invited: 5 results) Remarks (3 results)

  • [Journal Article] Controlling the Magnetic Properties of Cr-Implanted Co/Pt2014

    • Author(s)
      E. Suharyadi, T. Kato, S. Iwata
    • Journal Title

      IEEE Trans. Magn.

      Volume: 50 Issue: 1 Pages: 1-4

    • DOI

      10.1109/tmag.2013.2279272

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pulse width and temperature dependences of critical current density of spin transfer torque switching amorphous GdFeCo for thermally assisted MRAM2013

    • Author(s)
      B. Dai
    • Journal Title

      IEEE Trans. Magn.

      Volume: 49 Issue: 7 Pages: 4359-4362

    • DOI

      10.1109/tmag.2013.2240380

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Control of magnetic properties of MnGa films by Kr+ ion irradiation for application to bit patterned media2013

    • Author(s)
      D. Oshima
    • Journal Title

      IEEE Trans. Magn.

      Volume: 49 Issue: 7 Pages: 3608-3611

    • DOI

      10.1109/tmag.2013.2249501

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin transfer torque switching of amorphous GdFeCo with perpendicular magnetic anisotropy for thermally assisted magnetic memories2012

    • Author(s)
      B.Dai
    • Journal Title

      IEEE Trans. Magn.

      Volume: 48 Issue: 11 Pages: 3223-3226

    • DOI

      10.1109/tmag.2012.2196988

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Perpendicular anisotropy and Gilbert damping in sputtered Co/Pd multilayers2012

    • Author(s)
      T. Kato
    • Journal Title

      IEEE Trans. Magn.

      Volume: 48 Issue: 11 Pages: 3288-3291

    • DOI

      10.1109/tmag.2012.2198446

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bit patterned structure fabricated by Kr+ ion irradiation onto MnBiCu films2012

    • Author(s)
      Q. Xu
    • Journal Title

      IEEE Trans. Magn.

      Volume: 48 Issue: 11 Pages: 3406-3409

    • DOI

      10.1109/tmag.2012.2198052

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Ion beam irradiation for the fabrication of planer bit patterned media2013

    • Author(s)
      T. Kato, D. Oshima, M. Tanimoto, S. Iwata, S. Tsunashima
    • Organizer
      Collaborative Conference on Materials Research
    • Place of Presentation
      Jeju island, South Korea
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Patterning of magnetic films by ion irradiation for ultra high density data storage2013

    • Author(s)
      T. Kato, D. Oshima, M. Tanimoto, S. Iwata, S. Tsunashima
    • Organizer
      2nd International Congress on Advanced Materials
    • Place of Presentation
      Zhenjiang, China
    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Invited
  • [Presentation] Pulse width and temperature dependences of critical current density of spin transfer torque switching amorphous GdFeCo for thermally assisted MRAM2013

    • Author(s)
      B. Dai, T. Kato, S. Iwata, S. Tsunashima
    • Organizer
      12th Joint MMM/Intermag Conference
    • Place of Presentation
      Chicago, USA
    • Related Report
      2013 Final Research Report
  • [Presentation] Ion beam irradiation for the fabrication of planer bit patterned media2013

    • Author(s)
      T. Kato, D. Oshima, M. Tanimoto, S. Iwata, S. Tsunashima
    • Organizer
      Collaborative Conference on Materials Research 2013
    • Place of Presentation
      Jeju island, South Korea
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Effect of Kr+ Ion Irradiation on Orbital Moment of CrPt3 Alloy Film2013

    • Author(s)
      T. Kato, D. Oshima, M. Tanimoto, Y. Fujiwara, T. Nakamura, S. Iwata
    • Organizer
      International Symposium on Advanced Magnetic Materials and Applications 2013
    • Place of Presentation
      Taichung, Taiwan
    • Related Report
      2013 Annual Research Report
  • [Presentation] Switching field distribution measurement of ion beam patterned MnGa film2013

    • Author(s)
      D. Oshima, T. Kato, S. Iwata, S. Tsunashima
    • Organizer
      International Symposium on Advanced Magnetic Materials and Applications 2013
    • Place of Presentation
      Taichung, Taiwan
    • Related Report
      2013 Annual Research Report
  • [Presentation] Switching field distribution of bit patterned MnGa films fabricated by ion irradiation2013

    • Author(s)
      D. Oshima, T. Kato, S. Iwata, S. Tsunashima
    • Organizer
      The 58th Magnetism and Magnetic Materials Conference
    • Place of Presentation
      Denver, Colorado, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] Planar bit patterned media fabricated by ion beam irradiation2012

    • Author(s)
      T. Kato, D. Oshima, M. Tanimoto, Q. Xu, S. Iwata, S. Tsunashima
    • Organizer
      2012 Energy Materials Nanotechnology Fall Meeting
    • Place of Presentation
      Las Vegas, USA(A20)
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Current induced magnetization switching of amorphous GdFeCo with perpendicular magnetic anisotropy2012

    • Author(s)
      B. Dai, T. Kato, S. Iwata, S.Tsunashima
    • Organizer
      International Conference of the Asian Union of Magnetics Societies 2012
    • Place of Presentation
      Nara, Japan
    • Related Report
      2013 Final Research Report 2012 Research-status Report
  • [Presentation] Gilbert damping of Co/Pd multilayers with perpendicular anisotropy2012

    • Author(s)
      S. Kashima, T. Kato, Y. Matsumoto, S. Okamoto, N. Kikuchi, O. Kitakami, S. Iwata, S. Tsunashima
    • Organizer
      International Conference of the Asian Union of Magnetics Societies 2012
    • Place of Presentation
      Nara, Japan
    • Related Report
      2012 Research-status Report
  • [Presentation] Control of magnetic properties of MnGa films by Kr+ ion irradiation2012

    • Author(s)
      D. Oshima, T. Kato, S. Iwata, S. Tsunashima
    • Organizer
      International Conference of the Asian Union of Magnetics Societies 2012
    • Place of Presentation
      Nara, Japan
    • Related Report
      2012 Research-status Report
  • [Presentation] Planar bit patterned media fabricated by ion beam irradiation (Invited)2012

    • Author(s)
      T. Kato, D. Oshima, M. Tanimoto, Q. Xu, S. Iwata, S. Tsunashima
    • Organizer
      2012 Energy Materials Nanotechnology Fall Meeting
    • Place of Presentation
      Las Vegas, USA
    • Related Report
      2012 Research-status Report
    • Invited
  • [Remarks]

    • URL

      http://www.nuee.nagoya-u.ac.jp/labs/iwatalab/

    • Related Report
      2013 Final Research Report
  • [Remarks] 名古屋大学エコトピア科学研究所岩田研究室

    • URL

      http://www.nuee.nagoya-u.ac.jp/iwatalab/

    • Related Report
      2013 Annual Research Report
  • [Remarks] 名古屋大学工学研究科量子工学専攻岩田研究室

    • URL

      http://www.nuee.nagoya-u.ac.jp/labs/iwatalab/

    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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