論文 Circularly Polarized Light-Induced Magnetization Reversal in Bi,Ga-Substituted Magnetic Garnet Films

R. Asatani (Research Center for Magnetic and Spintronic Materials/Magnetic Recording Materials Group, National Institute for Materials Science) ; S. Suzuki (Research Center for Magnetic and Spintronic Materials/Magnetic Recording Materials Group, National Institute for Materials Science) ; A. Hata (Research Center for Magnetic and Spintronic Materials/Magnetic Recording Materials Group, National Institute for Materials Science) ; M. A. A. Masud (Nagaoka University of Technology) ; H. Sakaguchi (Research Center for Magnetic and Spintronic Materials/Magnetic Recording Materials Group, National Institute for Materials Science) ; S. Isogami SAMURAI ORCID (Research Center for Magnetic and Spintronic Materials/Magnetic Recording Materials Group, National Institute for Materials Science) ; T. Ishibashi (Research Center for Magnetic and Spintronic Materials/Magnetic Recording Materials Group, National Institute for Materials Science)

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引用
R. Asatani, S. Suzuki, A. Hata, M. A. A. Masud, H. Sakaguchi, S. Isogami, T. Ishibashi. Circularly Polarized Light-Induced Magnetization Reversal in Bi,Ga-Substituted Magnetic Garnet Films. Journal of the Magnetics Society of Japan. 2026, 50 (2), 30-33. https://doi.org/10.48505/nims.6206

説明:

(abstract)

All-optical magnetization switching (AOS) in magneto-optical materials is promising phenomena for applications such as high-speed optical modulation technology, as it allows for magnetization reversal using only ultrashort laser pulses. We report on AOS induced by circularly polarized light in Bi,Ga-substituted magnetic garnet, Bi2.5R0.5Fe4GaO12 (R = Eu, Nd and Y), thin films prepared by the metal-organic decomposition method, which possess both large Faraday effect and perpendicular magnetic anisotropy. The experiments for circularly polarized light-induced magnetization reversal were performed using laser pulses with a wavelength of 514 nm and a pulse width of 230 fs. Helicity-dependent ring-shaped magnetic domains were formed around demagnetized domains for all samples, when approximately 200 pulses were cumulatively irradiated onto a single spot on the samples.

権利情報:

キーワード: All optical switching, Rare earch iron garnet

刊行年月日: 2026-03-01

出版者: Magnetics Society of Japan

掲載誌:

  • Journal of the Magnetics Society of Japan (ISSN: 18822932) vol. 50 issue. 2 p. 30-33

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6206

公開URL: https://www.magnetics.jp/publication/j_2026_5002/

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更新時刻: 2026-03-05 16:30:04 +0900

MDRでの公開時刻: 2026-03-05 13:42:55 +0900

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