Time-Resolved Imaging of Magnetoelastic Waves by the Cotton-Mouton Effect

Authors

Tomosato Hioki, Tohoku University
Yusuke Hashimoto, Tohoku University
Tom H. Johansen, University of Wollongong, University of OsloFollow
Eiji Saitoh, Tohoku University, Japan Atomic Energy Agency

RIS ID

137084

Publication Details

Hioki, T., Hashimoto, Y., Johansen, T. H. & Saitoh, E. (2019). Time-Resolved Imaging of Magnetoelastic Waves by the Cotton-Mouton Effect. Physical Review Applied, 11 (6), 061007-1-061007-5.

Abstract

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 (m), which can be measured through birefringence induced by m, 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.