Magnetic domain controlled by spin wave
| Project/Area Number |
17K19029
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nano/Micro science and related fields
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
Goto Taichi 豊橋技術科学大学, 工学(系)研究科(研究院), 助教 (00721507)
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| Project Period (FY) |
2017-06-30 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | スピン波 / 磁壁 / 磁気ドメイン / 強磁性共鳴 / 磁性絶縁体 / 低消費電力 / 革新デバイス / 磁気光学顕微鏡 / 光スイッチ / ガーネット / レーザー / 磁気光学 / マイクロマグネティックス |
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| Outline of Final Research Achievements |
It is the final purpose to clarify whether the domain wall moves to the right or left by flowing 'spin wave' which is a magnetic wave in the domain wall. From the engineering viewpoint, if the magnetic domain wall in the insulator can be controlled as desired by the spin wave, the magnetic information can be shifted by the magnetism, and unlike the electricity, the dense wiring is unnecessary, and it can be applied to various things. However, there is no demonstration, and the movement of magnetic domain wall has not been confirmed, and there is no experimental basis. The movement of the domain wall is much slower than that of the general spin wave, and it is considered to be difficult in the system widely tested until now. Then, the relationship between spin wave flowing in the magnetic insulator without electric current and domain wall was clarified using sample and observation of nano micro scale.
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| Academic Significance and Societal Importance of the Research Achievements |
私は絶縁磁性体中の磁壁の消失と発生を制御し，光の偏光面状態を高速で切り替えることで，世界で初となる磁壁を使ったQスイッチレーザーを2016年に実証・発表されている。当該レーザー開発の中で，レーザーの出力される周波数（繰り返し周波数）は，100kHzを超えられず，情報処理デバイス応用には障壁がある。本件は，これまで具体の対策がなかった。そこで，着目したのが，電流による磁壁制御である。磁壁のある導体磁性体に電流を流すと，磁壁は移動する。これを絶縁磁性体に適用できれば，アレイ化技術と組み合わせて，レーザーの繰り返し周波数をMHzオーダに増大でき，社会での小型のレーザーの活躍範囲が広がると考えられる。
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Report
(3 results)
Research Products
(105 results)
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[Journal Article] The role of Snell's law for a magnonic majority gate2017
Author(s)
Naoki Kanazawa, Taichi Goto, Koji Sekiguchi, Alexander B. Granovsky, Caroline A. Ross, Hiroyuki Takagi, Yuichi Nakamura, Hironaga Uchida and Mitsuteru Inoue
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Journal Title
Scientific Reports
Volume: 7, 7898
Issue: 1
Pages: 1-8
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] High-power randomly polarized Q-switch laser using magneto-optical film2018
Author(s)
Ryohei Morimoto, Taichi Goto, John W. Pritchard, Mani Mina, Takunori Taira, Yuichi Nakamura, Pang Boey Lim, Hironaga Uchida, Mitsuteru Inoue
Organizer
International Conference of Electrical, Transport, and Optical Properties on Inhomogeneous Media (ETOPIM)
Related Report
Int'l Joint Research
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[Presentation] Plasmonic artificial magnetic lattice2018
Author(s)
Hironaga Uchida, Keisuke Ooki, Shin Saito, Taichi Goto, Hiroyuki Takagi, Pang Boey Lim, Yuichi Nakamura and Mitsuteru Inoue
Organizer
Magnetics and optics research international symposium (MORIS)
Related Report
Int'l Joint Research
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[Presentation] Integrated three-port spin wave waveguide using thin YIG film2017
Author(s)
Takuya Yoshimoto, Taichi Goto, Akihiko Banno, Kei Shimada, Hiroyuki Takagi, Yuichi Nakamura, Hironaga Uchida, Koji Sekiguchi, Caroline A. Ross and Mitsuteru Inoue
Organizer
Institute of Electrical and Electronics Engineers (IEEE) International Magnetics Conference (Intermag)
Related Report
Int'l Joint Research
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[Presentation] Plasmonic artificial magnetic lattice2017
Author(s)
Hironaga Uchida, Keisuke Ooki, Shin Saito, Taichi Goto, Hiroyuki Takagi, Yuichi Nakamura, Pang Boey Lim and Mitsuteru Inoue
Organizer
Moscow International Symposium on Magnetism (MISM)
Related Report
Int'l Joint Research / Invited
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[Presentation] Sekaihatsuno Meirojikuwotsukatta Jikikogaku Qsuicchi laser2017
Author(s)
Ryohei Morimoto, Taichi Goto, John W. Pritchard, Hiroyuki Takagi, Yuichi Nakamura, Pang Boey Lim, Mani Mina, Takunori Taira, Hironaga Uchida and Mitsuteru Inoue
Organizer
Optoelectronics Industry and Technology Development Association (OITDA) Tagengijutu Yugohikari Purosesu Kenkyukai
Related Report
Invited
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