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2016 Fiscal Year Annual Research Report

High performance GMR sensors using spin-control by anti-ferromagnetic NiO layer

Research Project

Project/Area Number 26289102
Research InstitutionNagoya University

Principal Investigator

岩田 聡  名古屋大学, 未来材料・システム研究所, 教授 (60151742)

Co-Investigator(Kenkyū-buntansha) 加藤 剛志  名古屋大学, 工学(系)研究科(研究院), 准教授 (50303665)
大島 大輝  名古屋大学, 未来材料・システム研究所, 助教 (60736528)
Project Period (FY) 2014-04-01 – 2017-03-31
KeywordsNiO反強磁性層 / 歪みセンサ / 巨大磁気抵抗効果 / スピンバルブ膜 / 一方向異方性 / 触覚センサ
Outline of Annual Research Achievements

本年度は,GMR磁気センサの高感度のための1つの手段として,反強磁性NiO層を介した交換結合膜を利用したGMR素子の開発を行なった。まず,Si基板上にTa(5nm)/CoFeB(10nm)/CoFe(4nm)/NiO(3nm)/CoFeB(5nm)/Ta(5nm)の積層膜をマグネトロンスパッタで作製し,その磁化ループを測定したところ,NiO層を介して2つの磁性層が交換結合し,外部磁界に対して同一の磁化変化することを確認した。そのため,この交換結合膜を磁化自由層とするスピンバルブ膜,すなわちSi基板上にTa(5nm)/CoFeB(10nm)/CoFe(4nm)/NiO(3nm)/CoFeB(5nm)/Cu(2.2nm)/CoFe(3nm)/MnIr(10nm)/Ta(2nm)を作製したところ,2.8%の磁気抵抗変化が得られた。NiOを介したスピンバルブ膜においても,磁気抵抗変が得られることが確認されたが,今回作製した構造では,NiO層の下の磁性層の厚さが14nmと薄いため,今後,厚膜化を図る必要がある。
一方,逆磁歪効果を利用した歪みセンサについては,高磁歪材料を利用して,カバーガラス上にTa(5nm)/FeSiB(20nm)/CoFeB(1.5nm)/Cu(2.0nm)/CoFe(3nm)/MnIr(10nm)/Ta(2nm)膜をスパッタ成膜し,幅100μm,長さ2000μmの細線に加工した。この素子に直流磁界とともに1kHzの交流磁界を加えて,素子に歪みを加えたところ,交流出力が大きく変化した。素子の磁気異方性と直流磁界の角度をパラメータとして出力特性を測定し,逆磁歪効果を考慮したシミュレーションを行なったところ,実験結果をほぼ説明できることが明らかとなった。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Causes of Carryover

28年度が最終年度であるため、記入しない。

Expenditure Plan for Carryover Budget

28年度が最終年度であるため、記入しない。

  • Research Products

    (27 results)

All 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Acknowledgement Compliant: 3 results,  Open Access: 1 results) Presentation (21 results) (of which Int'l Joint Research: 11 results,  Invited: 2 results)

  • [Journal Article] Ion irradiation induced magnetic transition of MnGa alloy films studied by X-ray magnetic circular dichroism and low-temperature hysteresis loops2016

    • Author(s)
      D. Oshima, M. Tanimoto, T. Kato, Y. Fujiwara, T. Nakamura, Y. Kotani, S. Tsunashima, S. Iwata
    • Journal Title

      IEEE Trans. Magn.

      Volume: 52 Pages: 3201804-1-4

    • DOI

      10.1109/TMAG.2016.2527050

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effective Damping Constant and Current Induced Magnetization Switching of GdFeCo / TbFe Exchange-Coupled Bilayer2016

    • Author(s)
      T. Higashide, B. Dai, T. Kato, D. Oshima, S. Iwata
    • Journal Title

      IEEE Magn. Lett.

      Volume: 7 Pages: 3505605-1-5

    • DOI

      10.1109/LMAG.2016.2595502

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Ferromagnetic Resonance of a Single Magnetochiral Metamolecule of Permalloy2016

    • Author(s)
      T. Kodama, S. Tomita, T. Kato, D. Oshima, S. Iwata, S. Okamoto, N. Kikuchi, O. Kitakami, N. Hosoito, H. Yanagi
    • Journal Title

      Phys. Rev. Appl.

      Volume: 6 Pages: 024016-1-9

    • DOI

      10.1103/PhysRevApplied.6.024016

    • Peer Reviewed
  • [Journal Article] Nano spin-diodes using FePt-NDs with huge on/off current ratio at room temperature2016

    • Author(s)
      K. Makihara, T. Kato, Y. Kabeya, Y. Mitsuyuki, A. Ohta, D. Oshima, S. Iwata, Y. Darma, M. Ikeda, S. Miyazaki
    • Journal Title

      Scientific Reports

      Volume: 6 Pages: 33409-1-7

    • DOI

      10.1038/srep33409

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Spin-orbit torques in ferrimagnetic GdFeCo alloys2016

    • Author(s)
      N. Roschewsky, T. Matsumura, S. Cheema, F. Hellman, T. Kato, S. Iwata, S. Salahuddin
    • Journal Title

      Appl. Phys. Lett.

      Volume: 109 Pages: 112403-1-4

    • DOI

      10.1063/1.4962812

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The calcination temperature dependence of microstructural, vibrational spectra and magnetic properties of nanocrystalline Mn0.5Zn0.5Fe2O42016

    • Author(s)
      I. P. T. Indrayana, N. Siregar, E. Suharyadi, T. Kato, S. Iwata
    • Journal Title

      J. Phys.: Conference Series

      Volume: 776 Pages: 012021-1-7

    • DOI

      10.1088/1742-6596/776/1/012021

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Magnetic strain sensor using GMR films with magnetostrictive FeSiB free layer2017

    • Author(s)
      Y. Hashimoto, N. Yamamoto, T. Kato, D. Oshima, S. Iwata
    • Organizer
      IEEE International Magnetics Conference
    • Place of Presentation
      Dublin, Ireland
    • Year and Date
      2017-04-24 – 2017-04-28
    • Int'l Joint Research
  • [Presentation] Local switching field and magnetic state of ion-irradiation bit patterned L10-MnGa film probed by scanning X-ray magnetic circular dichroism2017

    • Author(s)
      T. Ishikawa, K. Fukuta, D. Oshima, T. Kato, T. Nakamura, Y. Kotani, K. Toyoki, S. Iwata
    • Organizer
      IEEE International Magnetics Conference
    • Place of Presentation
      Dublin, Ireland
    • Year and Date
      2017-04-24 – 2017-04-28
    • Int'l Joint Research
  • [Presentation] First order reversal curve diagram analysis of ion irradiated bit patterned MnGa film2017

    • Author(s)
      D. Oshima, T. Kato, S. Iwata
    • Organizer
      IEEE International Magnetics Conference
    • Place of Presentation
      Dublin, Ireland
    • Year and Date
      2017-04-24 – 2017-04-28
    • Int'l Joint Research
  • [Presentation] FeSiBアモルファス層を有するGMR素子を用いた歪みセンサ2017

    • Author(s)
      橋本侑也,山本直樹,加藤剛志,大島大輝,岩田聡
    • Organizer
      電気学会マグネティックス研究会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2017-03-10 – 2017-03-10
  • [Presentation] 垂直磁化GdFeCoアモルファス膜のスピン軌道トルクによる磁化反転2017

    • Author(s)
      松村智矢, 大島大輝, 加藤剛志, 岩田聡
    • Organizer
      IEEE Magnetics Society 名古屋支部若手研究会
    • Place of Presentation
      豊田工業大学
    • Year and Date
      2017-01-27 – 2017-01-27
  • [Presentation] Time resolved magneto-optical Kerr effect of magnetic materials with high perpendicular magnetic anisotropy2016

    • Author(s)
      T. Kato
    • Organizer
      International Workshop on Novel Photo Induced Phenomena and Applications
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      2016-11-11 – 2016-11-12
    • Int'l Joint Research / Invited
  • [Presentation] Fabrication of High Sensitive Magnetic Field Sensor with Amorphous Wire and Fine Pitch Coils2016

    • Author(s)
      T. Kato, S. Iwata, Y. Honkura
    • Organizer
      29th International Microprocesses and Nanotechnology Conference
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2016-11-08 – 2016-11-11
    • Int'l Joint Research
  • [Presentation] Sign of Spin-Orbit Torques in ferrimagnetic GdFeCo2016

    • Author(s)
      N. Roschewsky, T. Matsumura, S. Cheema, T. Kato, S. Iwata, S. Salahuddin
    • Organizer
      61st Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2016-10-31 – 2016-11-04
    • Int'l Joint Research
  • [Presentation] Magnetization switching induced by spin-orbit torques in perpendicularly magnetized Ta / GdFeCo bilayers2016

    • Author(s)
      T. Matsumura, D. Oshima, T. Kato, N. Roschewsky, S. Salahuddin, S. Iwata
    • Organizer
      61st Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2016-10-31 – 2016-11-04
    • Int'l Joint Research
  • [Presentation] [CoPd/Pd] and [Co/Pd] hybrid stacks for the memory layer of high density magnetic random access memory cells2016

    • Author(s)
      X. Dong, D. Oshima, T. Kato, Y. Sonobe, S. Iwata
    • Organizer
      61st Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2016-10-31 – 2016-11-04
    • Int'l Joint Research
  • [Presentation] First order reversal curve diagrams of bit patterned MnGa fabricated by local ion irradiation2016

    • Author(s)
      D. Oshima, T. Kato, S. Iwata
    • Organizer
      61st Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2016-10-31 – 2016-11-04
    • Int'l Joint Research
  • [Presentation] Magnetization dynamics and magnetic anisotropy of ion irradiated L10-MnGa films2016

    • Author(s)
      H. Kano, T. Kato, D. Oshima, S. Takahashi, Y. Sonobe, S. Iwata
    • Organizer
      61st Annual Conference on Magnetism and Magnetic Materials
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2016-10-31 – 2016-11-04
    • Int'l Joint Research
  • [Presentation] Time resolved magneto-optical Kerr effect and spin transfer torque switching of GdFeCo / TbFe exchange coupled bilayers2016

    • Author(s)
      T. Kato, T. Higashide, B. Dai, D. Oshima, S. Iwata
    • Organizer
      第40回日本磁気学会学術講演会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-05 – 2016-09-08
    • Invited
  • [Presentation] Kr+イオンを照射したL10-MnGa膜の時間分解磁気光学Kerr効果2016

    • Author(s)
      加納秀紀,加藤剛志,大島大輝,高橋茂樹,園部義明,岩田聡
    • Organizer
      第40回日本磁気学会学術講演会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-05 – 2016-09-08
  • [Presentation] 垂直磁化GdFeCo膜のスピンホール効果による磁化反転2016

    • Author(s)
      松村智矢,大島大輝,加藤剛志,岩田聡
    • Organizer
      第40回日本磁気学会学術講演会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-05 – 2016-09-08
  • [Presentation] イオン照射によるSi基板上MnGa (001)配向膜の磁気パターニング2016

    • Author(s)
      石川徹,根来翼,大島大輝,加藤剛志,岩田聡
    • Organizer
      第40回日本磁気学会学術講演会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-05 – 2016-09-08
  • [Presentation] イオン照射したMnGa膜の磁気特性の温度依存性2016

    • Author(s)
      大島大輝,加藤剛志,岩田聡
    • Organizer
      第40回日本磁気学会学術講演会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-05 – 2016-09-08
  • [Presentation] 低キュリー温度CoPd/Pd多層膜を用いた交換結合膜の磁化反転2016

    • Author(s)
      董夏茵,大島大輝,加藤剛志,園部義明,岩田聡
    • Organizer
      第40回日本磁気学会学術講演会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-05 – 2016-09-08
  • [Presentation] 低エネルギーKr+イオン照射によるMnGaビットパターン構造の作製2016

    • Author(s)
      福田憲吾,松永隆雅,大島大輝,加藤剛志,岩田聡
    • Organizer
      第40回日本磁気学会学術講演会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-05 – 2016-09-08
  • [Presentation] The calcination temperature dependence of microstructural, vibrational spectra and magnetic properties of nanocrystalline Mn0.5Zn0.5Fe2O42016

    • Author(s)
      I. P. T. Indrayana, N. Siregar, E. Suharyadi, T. Kato, S. Iwata
    • Organizer
      8th International Conference on Physics and its Applications
    • Place of Presentation
      Denpasar, Indonesia
    • Year and Date
      2016-08-23 – 2016-08-23
    • Int'l Joint Research
  • [Presentation] MnGa膜を用いたイオン照射型ビットパターン媒体の高密度化の検討2016

    • Author(s)
      大島大輝,福田憲吾,加藤剛志,岩田聡
    • Organizer
      電気学会マグネティックス研究会
    • Place of Presentation
      豊橋技術科学大学
    • Year and Date
      2016-08-09 – 2016-08-10

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Published: 2018-01-16  

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