Development of high efficiency oscillators and detectors using nano-spin superstructures

• Project/Area Number: 23360004
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Tohoku University
• Principal Investigator: MIZUGUCHI MASAKI 東北大学, 金属材料研究所, 准教授 (50397759)
• Co-Investigator(Kenkyū-buntansha): SEKI Takeshi 東北大学, 金属材料研究所, 助教 (40579611) ; 三俣 千春 独立行政法人物質・材料研究機構, 元素戦略磁性材料研究拠点, 企画マネージャー (70600542)
• Co-Investigator(Renkei-kenkyūsha): MITSUMATA Chiharu 独立行政法人物質・材料研究機構, 元素戦略磁性材料研究拠点, 企画マネージャー (70600542)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥20,930,000 (Direct Cost: ¥16,100,000、Indirect Cost: ¥4,830,000); Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2012: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000); Fiscal Year 2011: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
• Keywords: 磁性 / スピントロニクス / 高周波 / 発振 / 検波

Research Abstract

This research aimed to develop ultimate spin oscillators and detectors with high Q-values and high efficiency. To realize the purpose, nano-scaled spin-superstructures including ferromagnetic nano-dot arrays were fabricated. The influence of the ac spin current injection on spin torque oscillation has been also investigated within the framework of macro-spin model. Moreover, oscillation spectra were measured for actual nano-scaled GMR devices with large magnetoresistance to develop novel oscillation devices.

Research Products

• [Journal Article] Magneto-optical properties and size effect of ferromagnetic metal nanoparticles (2013)
  • Author(s): T.Kaihara, M.Mizuguchi, K.Takanashi, and H.Shimizu
  • Journal Title: Japanese Journal of Applied Physics Volume: 52 Issue: 7R Pages: 073003-073003
  • DOI: 10.7567/jjap.52.073003
  • NAID: 210000142443
  • Peer Reviewed
• [Journal Article] Relationship between the Microstructure and the Magnetic Properties of Nano-scale Magnetic Particles Formed in a Cu-10 at% Ni-5 at% Co Alloy (2013)
  • Author(s): D.H. Lee, T.Moriki, M.Takeda, S.Kang, D.S.Bae, M.Mizuguchi, and K.Takanashi
  • Journal Title: Journal of the Korean Physical Society Volume: 63 Issue: 3 Pages: 555-558
  • DOI: 10.3938/jkps.63.555
  • Peer Reviewed
• [Journal Article] High power radio frequency oscillation by spin transfer torque in a Co_2MnSi layer: Experiment and macrospinsimulation (2013)
  • Author(s): T. Seki, Y. Sakuraba, R. Okura and K. Takanashi
  • Journal Title: Journal of Applied Physics Volume: 113 Issue: 3
  • DOI: 10.1063/1.4776719
  • Peer Reviewed
• [Journal Article] Simple Analysis for Frequency Increase in Spin Torque Oscillation (2013)
  • Author(s): C.Mitsumata, S.Tomita, T.Seki, and M.Mizuguchi
  • Journal Title: IEEE Transactions on Magnetism Volume: 48 Issue: 11 Pages: 3955-3957
  • DOI: 10.1109/tmag.2012.2201700
  • Peer Reviewed
• [Presentation] Reducing critical spin current on spin torque oscillation in perpendicular magnetization system (2014)
  • Author(s): C.Mitsumata and M.Mizuguchi
  • Organizer: International Magnetics Conference, INTERMAG 2014
  • Place of Presentation: Dresden (Germany)
  • Year and Date: 2014-05-08
• [Presentation] Reducing critical spin current on spin torque oscillation in perpendicular magnetization system (2014)
  • Author(s): C. Mitsumata, M. Mizuguchi
  • Organizer: INTERMAG 2014
  • Place of Presentation: Dresden, Germany
• [Presentation] Analysis of magnetic resonance in term of linearlized Landau-Lifshitz-Gilbert equation for nano-dots indeced by spin transfer torque (2012)
  • Author(s): C.Mitsumata, S.Tomita, T.Seki, and M.Mizuguchi
  • Organizer: International Conference of the Asian Union of Magnetics Societies
  • Place of Presentation: Nara (Japan)
  • Year and Date: 2012-10-04
  • Invited
• [Presentation] Frequency control of spin torque oscillation in magnetic metamaterials for microwave generator (2012)
  • Author(s): C.Mitsumata and S.Tomita
  • Organizer: The 6th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics
  • Place of Presentation: St. Petersburg (Russia)
  • Year and Date: 2012-09-20
• [Presentation] 強磁性金属ナノ粒子の磁気光学効果の評価 (2012)
  • Author(s): 貝原輝則、水口将輝、高梨弘毅、清水大雅
  • Organizer: 第73回応用物理学会学術合講演会
  • Place of Presentation: 松山 (日本)
  • Year and Date: 2012-09-14
• [Presentation] Simple Analysis for Frequency Enhancement in Spin Transfer Oscillation (2012)
  • Author(s): C.Mitsumata, S.Tomita, M.Mizuguchi, and T.Seki
  • Organizer: International Magnetics Conference, INTERMAG 2012
  • Place of Presentation: Vancouver, (Canada)
  • Year and Date: 2012-05-10
• [Presentation] Simple Analysis for Frequency Enhancement in Spin Transfer Oscillation (2012)
  • Author(s): C. Mitsumata, S. Tomita, M. Mizuguchi, and T. Seki
  • Organizer: International Magnetics Conference, INTERMAG 2012
  • Place of Presentation: Vancouver, Canada
• [Presentation] Frequency control of spin torque oscillation in magnetic metamaterials for microwave generator (2012)
  • Author(s): C. Mitsumata and S. Tomita
  • Organizer: The 6th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics
  • Place of Presentation: St. Petersburg, Russia
• [Presentation] Analysis of magnetic resonance in term of linearlized Landau-Lifshitz-Gilbert equation for nano-dots inueced by spin transfer torque (2012)
  • Author(s): C. Mitsumata, S. Tomita, T. Seki, and M. Mizuguchi
  • Organizer: International Conference of the Asian Union of Magnetics Societies
  • Place of Presentation: Nara, Japan
  • Invited
• [Presentation] メタマテリアルにおける磁気共鳴状態の制御とダンピング定数 (2011)
  • Author(s): 三俣千春、冨田知志
  • Organizer: 第35回日本磁気学会学術講演会
  • Place of Presentation: 新潟 (日本)
  • Year and Date: 2011-09-29
• [Presentation] メタマテリアルにおける磁気共鳴状態の制御とダンピング定数 (2011)
  • Author(s): 三俣千春、冨田知志
  • Organizer: 第35回日本磁気学会学術講演会
  • Place of Presentation: 新潟(日本)
  • Year and Date: 2011-09-29