[17p-Z19-8~24] 10.3 Spin devices, magnetic memories and storages

[17p-Z19-23] Origin and Optical Switching of Perpendicular Magnetization
for Co_100-xGd_x/Pt Multilayers

〇Takeshi Seki^1,2,3, Jian Wang^1,2, Yong Chang Lau^1,2, Yukiko Takahashi³, Koki Takanashi^1,2,4 (1.IMR, Tohoku Univ., 2.CSRN, Tohoku Univ., 3.NIMS, 4.CSIS, Tohoku Univ.)

Keywords:All-optical switching, perpendicular magnetic anisotropy, multilayer

This study shows the origin of perpendicular magnetic anisotropy and the role of induced magnetic moment for the Co-Gd/Pt multilayers with various Co-Gd layer thicknesses and alloy compositions. The Co-Gd/Pt multilayers exhibited the single laser pulse all-optical helicity independent switching in the wide Co-Gd composition range, and the maximum switching probability was obtained around the compensation composition of Co-Gd.