[17p-Z19-8~24] 10.3 スピンデバイス・磁気メモリ・ストレージ技術

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

〇関 剛斎^1,2,3、Wang Jian^1,2、Lau Yong Chang^1,2、高橋 有紀子³、高梨 弘毅^1,2,4 (1.東北大金研、2.東北大CSRN、3.物材機構、4.東北大CSIS)

キーワード：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.