Development of time-resolved transmission electron microscopy using highly coherent pulsed electron beams for obversion of magnetic skyrmion motion
| Project/Area Number |
17K14117
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Nagoya University |
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Principal Investigator |
Ishida Takafumi 名古屋大学, 未来材料・システム研究所, 助教 (60766525)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 時間分解電子顕微鏡法 / シングルショットイメージング / ダイレクト電子検出器 / パルス電子線 / ローレンツ顕微鏡法 / 電子顕微鏡 / 時間分解観察 / ダイレクト電子検出 / スキルミオン / 電子線ホログラフィ |
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| Outline of Final Research Achievements |
In order to observe motion of fine magnetic strictures such as magnetic skyrmions, a method of time-resolved observation by a pulsed electron beam with a photocathode type electron gun and a direct electron detector was developed in a low-voltage transmission electron microscope. We have succeeded in generating sub-micro second pulsed electron beams at high intensity. In addition, we have realized single-shot imaging at high signal-to-noise ratio using synchronous measurement. A time-resolved transmission electron microscopy with continuous image acquisition at 500 ns interval was established by using high-speed deflector.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で確立した連続で撮影可能な時間分解電子顕微鏡法により超高速で発現する磁気スキルミオンの可視化が期待できる。また、この手法はスキルミオンダイナミクスの観察のみならず低ドーズ観察が要求される生体試料の観察やガスや液体中でのその場観察にも転用可能である。そのため、本技術の確立は電子顕微鏡を用いた生物系・その場観察分野での貢献も期待される。
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Report
(4 results)
Research Products
(23 results)
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[Journal Article] Smectic Liquid-Crystalline Structure of Skyrmions in Chiral Magnet Co8.5Zn7.5Mn4 (110) Thin Film2019
Author(s)
T. Nagase, M. Komatsu, Y. G. So, T. Ishida, H. Yoshida, Y. Kawaguchi, Y. Tanaka, K. Saitoh, N. Ikarashi, M. Kuwahara, and M. Nagao
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Journal Title
Physical Review Letters
Volume: 123
Issue: 13
Pages: 137203-137203
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] bservation of Anisotropic Skyrmion Interactions Using Lorentz Transmission Electron Microscopy2019
Author(s)
T. Nagase, M. Komatsu, Y. G So, T. Ishida, H. Yoshida, Y. Kawaguchi, Y. Tanaka, K. Saitoh, N. Ikarashi, M. Kuwahara, M. Nagao
Organizer
International Conference on Materials and Systems for Sustainability 2019
Related Report
Int'l Joint Research
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