Strain effect on the perpendicular magnetization switching driven by spin–orbit torque

作者：Yuzhe Chen, Zhuoyi Li, Zhe Zhang, Sicong Hu, Zhihao Li, Junwei Hou, Lei Wang, Yu Yan, Yao Li, Liang He, Jun Du, Rong Zhang, Jing Wu, Xianyang Lu, Hang Xie, Yongbing Xu · 发表于：Applied Physics Letters · 年份：2025 · DOI：10.1063/5.0285337 · 被引用次数：3 · 研究领域：Magnetic properties of thin films、Advanced Memory and Neural Computing、Multiferroics and related materials

In this study, we investigate the influence of strain on spin–orbit torque and current-induced magnetization switching in Ta/Pt/Co/Ta heterostructures deposited on flexible polyimide substrates. By applying strain ranging from −12.5‰ (compressive) to 12.5‰ (tensile), we observe that increasing the strain amplitude reduces coercivity and enhances spin–orbit torque efficiency, collectively leading to a 28.6% reduction in switching current density. The lowest achieved switching current density is 3.07 MA/cm2. Our findings demonstrate strain-mediated tuning of spin–orbit torque and underscore the potential of such heterostructures for flexible spintronic applications.