[P] P152~P165 Electric/Magnetic Materials

[P164] Effect of Ta/W Layer Structure in Ta/W-Based Heavy-Metal/CoFeB Multilayers on Spin-Orbit-Torque Switching and Power consumption

○Shoma Komatsu¹, MIzue Ishikawa^1,2, Masashi Matsuura¹, Nobuki Tezuka¹ (1. Tohoku Univ., 2. Nihon Univ.)

Keywords:

Spintronics,Spin-Orbit Torque,MRAM,Spin-Orbit Torque Switching,CoFeB

Ta/W-based heavy-metal/CoFeB multilayers with varied Ta thickness were prepared by magnetron sputtering. Effects of Ta/W layer structure on SOT switching and the power index were evaluated. Low-power operation requires low resistivity and preservation of the W/CoFeB interface.