Development of frequency-modulation type oscillation devices using perpendicular magnetic anisotropy and spin mode-lock

• Project/Area Number: 20686001
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• 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)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000); Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2009: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000); Fiscal Year 2008: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
• Keywords: 磁性 / スピントロニクス / 高周波 / モードロック / 発振

Research Abstract

This research aimed to develop ultimate spin oscillation devices with high Q-value in which frequency modulation is possible, and an external magnetic field is not needed. To realize the purpose, nano-scaled magnetic superstructures including full-epitaxial crystals were fabricated. Then, high frequency spin response of these elements was measured, and oscillation conditions were investigated. Moreover, oscillation spectra were measured for actual nano-scaled devices with large magnetoresistance to develop novel oscillation devices.

Research Products

• [Journal Article] Ferromagnetic resonance study on FePt thin films with in-plane magnetization using coplanar waveguide (2012)
  • Author(s): J. G Kang, M. Mizuguchi K. Takanashi
  • Journal Title: Key Engineering Materials Volume: 508 Pages: 261-265
  • Peer Reviewed
• [Journal Article] High-power rf oscillation induced in half-metallic Co_2 MnSi layer by spin-transfer torque (2011)
  • Author(s): R. Okura, Y. Sakuraba, T. Seki, K. Izumi, M. Mizuguchi, K. Takanashi
  • Journal Title: Applied Physics Letters Volume: 99
  • Peer Reviewed
• [Journal Article] Ferromagnetic resonance of epitaxial Fe nanodots grown on MgO measured using coplanar waveguides (2011)
  • Author(s): M. Mizuguchiand K. Takanashi
  • Journal Title: Journal of Physics D: Applied Physics Volume: 44
  • Peer Reviewed
• [Journal Article] 金属スピントロニクスと表面科学 (2011)
  • Author(s): 水口将輝
  • Journal Title: 表面科学 Volume: 32 Pages: 145-151
  • NAID: 10027904873
  • Peer Reviewed
• [Journal Article] Ferromagnetic resonance of epitaxial Fe nanodots grown on MgO measured using coplanar waveguides (2011)
  • Author(s): M.Mizuguchi, K.Takanashi
  • Journal Title: Journal of Physics D : Applied Physics Volume: 44
  • Peer Reviewed
• [Journal Article] High-power rf oscillation induced in half-metallic Co_2MnSi layer by spin-transfer torque (2011)
  • Author(s): R.Okura, Y.Sakuraba, T.Seki, K.Izumi, M.Mizuguchi, K.Takanashi
  • Journal Title: Applied Physics Letters Volume: 99
  • Peer Reviewed
• [Journal Article] Transmission of electric signals by spin-wave interconversion in a magnetic insulator (2010)
  • Author(s): Y. Kajiwara, K. Harii, S. Takahashi, J. Ohe, K. Uchida, M. Mizuguchi, H. Umezawa, H. Kawai, K. Ando, K. Takanashi, S. Maekawa E. Saitoh
  • Journal Title: Nature Volume: 464 Pages: 262-266
  • Peer Reviewed
• [Journal Article] Transmission of electric signals by spin-wave interconversion in a magnetic insulator (2010)
  • Author(s): Y.Kajiwara, K.Harii, S.Takahashi, J.Ohe, K.Uchida, M.Mizuguchi, H.Umezawa, H.Kawai, K.Ando, K.Takanashi, S.Maekawa, E.Saitoh
  • Journal Title: Nature 464 Pages: 262-266
  • Peer Reviewed
• [Presentation] Spin-torque induced rf-oscillationin half-metallic Co_2MnSi-based CPP-GMR devices (2011)
  • Author(s): Y. Sakuraba, R. Okura, T. Seki, M. Mizuguchi, K. Takanashi
  • Organizer: 56th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: Scottsdale, USA
  • Year and Date: 2011-11-03
• [Presentation] Spin-torque induced rf-oscillation in half-metallic Co_2MnSi-based CPP-GMR devices (2011)
  • Author(s): Y.Sakuraba, R.Okura, T.Seki, M.Mizuguchi, K.Takanashi
  • Organizer: 56th Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: Scottsdale (USA)
  • Year and Date: 2011-11-03
• [Presentation] Spin-torque induced magnetization switching and oscillation in half-metallic Co_2MnSi-based CPP-GMR devices (2011)
  • Author(s): Y. Sakuraba, R. Okura, S. Bosu, F. Yang, T. Seki, M. Mizuguchi, K. Saito, K. Takanashi
  • Organizer: 2011 International Conference on Solid State Devices and Materials (SSDM2011)
  • Place of Presentation: Nagoya, Japan
  • Year and Date: 2011-09-30
• [Presentation] Spin-torque induced magnetization switching and oscillation in half-metallic Co_2MnSi-based CPP-GMR devices (2011)
  • Author(s): Y.Sakuraba, R.Okura, S.Bosu, F.Yang, T.Seki, M.Mizuguchi, K.Saito, K.Takanashi
  • Organizer: 2011 International Conference on Solid State Devices and Materials (SSDM2011)
  • Place of Presentation: Nagoya (Japan)(招待講演)
  • Year and Date: 2011-09-30
• [Presentation] Spin dynamics in ferromagnetic nano-scaled dots (2010)
  • Author(s): M. Mizuguchi, K. Takanashi
  • Organizer: The 2nd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA 2010)
  • Place of Presentation: Sendai, Japan
  • Year and Date: 2010-07-16
• [Presentation] Spin dynamics in ferromagnetic nano-scaled dots (2010)
  • Author(s): M.Mizuguchi, K.Takanashi
  • Organizer: The 2nd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA 2010)
  • Place of Presentation: Sendai (Japan)(招待講演)
  • Year and Date: 2010-07-16
• [Presentation] 格子不整合を用いた磁性ナノ粒子集合体の創製 (2010)
  • Author(s): 水口将輝、大道悟、高梨弘毅
  • Organizer: 磁気学会第172回研究会
  • Place of Presentation: 東京
  • Year and Date: 2010-05-27
• [Presentation] 格子不整合を用いた磁性ナノ粒子集合体の創製 (2010)
  • Author(s): 水口将輝、大道悟、高梨弘毅
  • Organizer: 磁気学会第172回研究会
  • Place of Presentation: 東京(日本)(招待講演)
  • Year and Date: 2010-05-27
• [Presentation] 強磁性ナノ粒子集合体の創製とスピン共鳴現象 (2009)
  • Author(s): 水口将輝、岡航平、高梨弘毅
  • Organizer: 第33回日本磁気学会学術講演会
  • Place of Presentation: 長崎市
  • Year and Date: 2009-09-13
• [Presentation] 強磁性ナノ粒子集合体の創製とスピン共鳴現象 (2009)
  • Author(s): 水口将輝、岡航平、高梨弘毅
  • Organizer: 第33回日本磁気学会学術講演会
  • Place of Presentation: 長崎大学
  • Year and Date: 2009-09-13
• [Presentation] 二次元Feグラニュラー構造におけるスピン共鳴現象 (2009)
  • Author(s): 水口将輝、岡航平、高梨弘毅
  • Organizer: 第70回応用物理学会学術講演会
  • Place of Presentation: 富山市
  • Year and Date: 2009-09-10
• [Presentation] 二次元Feグラニュラー構造におけるスピン共鳴現象 (2009)
  • Author(s): 水口将輝、岡航平、高梨弘毅
  • Organizer: 第70回応用物理学会学術講演会
  • Place of Presentation: 富山大学
  • Year and Date: 2009-09-10
• [Presentation] Growth and characterization of epitaxial Co nano-dots on insulating layers (2009)
  • Author(s): M. Mizuguchi, K. Takanashi
  • Organizer: International Conference on Magnetism 2009 (ICM 2009)
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 2009-07-28
• [Presentation] Growth and characterization of epitaxial Co nano-dots oninsulating layers (2009)
  • Author(s): 水口将輝, 高梨弘毅
  • Organizer: International Conference on Magnetism 2009
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 2009-07-28
• [Presentation] Fabrication and spin resonant phenomena of self-assembled epitaxial ferromagnetic nano-dots fabrication and spin resonant (2009)
  • Author(s): M. Mizuguchi, K.Oka, K. Takanashi
  • Organizer: 20th International Colloquium on Magnetic Films and Surfaces(ICMFS2009)
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2009-07-23
• [Presentation] FABRICATION AND SPIN RESONANT PHENOMENA OF SELF-ASSEMBLED EPITAXIAL FERROMAGNETIC NANO-DOTS FABRICATION AND SPIN RESONANT (2009)
  • Author(s): 水口将輝, 岡航平, 高梨弘毅
  • Organizer: 20th International Colloquium on Magnetic Films and Surfaces
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2009-07-23
• [Presentation] Fabrication of two-dimensional assembly of well-isolated epitaxial Co-nanoparticles on insulating layers (2008)
  • Author(s): M. Mizuguchi, S. Mitani, K. Takanashi
  • Organizer: 53rd Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: Austin, USA
  • Year and Date: 2008-11-14
• [Presentation] Fabrication of two-dimensional assembly of well-isolated epitaxial Co-nanoparticles on insulating layers (2008)
  • Author(s): M. Mizuguchi, S. Mitani, and K. Takanashi
  • Organizer: 53rd Annual Conference on Magnetism & Magnetic Materials
  • Place of Presentation: Austin, U.S.A
  • Year and Date: 2008-11-14
• [Presentation] ナノサイズCo微粒子を含む二次元グラニュラー薄膜の伝導特性 (2008)
  • Author(s): 水口将輝、三谷誠司、高梨弘毅
  • Organizer: 第69回応用物理学学術講演会
  • Place of Presentation: 春日井市
  • Year and Date: 2008-09-02
• [Presentation] ナノサイズCo微粒子を含む二次元グラニュラー薄膜の伝導特性 (2008)
  • Author(s): 水口将輝、三谷誠司、高梨弘毅
  • Organizer: 第69回応用物理学学術講演会
  • Place of Presentation: 愛知県春日井市
  • Year and Date: 2008-09-02