Time-resolved imaging of magnetoelastic waves by the cotton-mouton effect

Hioki, Tomosato*; Hashimoto, Yusuke*; Johansen, T. H.*; Saito, Eiji

We investigate the propagation dynamics of magneto-elastic waves in an out-of-plane (OP) magnetized film using time-resolved magneto-optical (TRMO) microscopy based on the Cotton-Mouton effect. In OP magnetized films, spin precession induces a temporal change in the in-plane component of magnetization ( $mathbf{m}_perp$ ), which can be measured through birefringence induced by $mathbf{m}_perp$ , or the Cotton-Mouton effect (CME). Here we develop an imaging method based on CME, realizing the observation of stress-driven magneto-elastic waves in an OP magnetized film. This result expands the focus of TRMO microscopy, allowing investigation of magneto-elastic waves in OP magnetized films.

Language	:	English
Journal	:	Physical Review Applied (Internet)
Volume	:	11
Number	:	6
Pages	:	p.061007_1 - 061007_5
Publication Year/Month	:	2019/06
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Paper URL	:	https://doi.org/10.1103/PhysRevApplied.11.061007
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Keywords	:	コットンムートン効果; 時間分解測定; 磁気弾性波
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Registration No. : AA20220596
JAEA Abstracts No. :
Paper Submission No. : 25946

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