[18p-S2_201-1~8] 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)English Presentation

[18p-S2_201-5] Strain-induced changes in perpendicular magnetic anisotropy probed by X-ray magnetic spectroscopies in GdFeCo film on flexible polyimide sheet

〇Jun Okabayashi¹, Yuki Fujii², Hiroki Yoshikawa², Arata Tsukamoto² (1.UTokyo, 2.Nihon Univ.)

Keywords:

Perpendicular magnetic anisotropy,X-ray magnetic circular dichroism,strain

An amorphous GdFeCo perpendicular magnetic anisotropy film was deposited on a flexible polyimide substrate. It has been found that the magnetic anisotropy changes due to external stress. To investigate the origin of this change for each element, X-ray magnetic circular dichroism (XMCD) was performed under applied stress. Gd and FeCo are antiferro-magnetically coupled, and changes in XMCD due to stress were observed. Changes in interatomic distance were also observed using extended X-ray absorption fine structure (EXAFS), and the stress dependence of the magnetism of each element is discussed.