铁磁性
凝聚态物理
磁化
自旋电子学
材料科学
铁磁性
矫顽力
磁场
物理
量子力学
作者
Xu Zhang,Xiaolu Wang,Qisheng Jiang,Wenqing He,Yongqiang Yang,Qianxun Gong,Tengyu Guo,Peng Chen,Jing Zhang,Guoqiang Yu,Xiufeng Han,Kang L. Wang,Yue Wang,Baoshan Cui,Hao Wu
出处
期刊:AIP Advances
[American Institute of Physics]
日期:2023-04-01
卷期号:13 (4)
被引量:2
摘要
Spin–orbit torques (SOTs) provide an efficient way to electrically manipulate the magnetic order in spintronic devices. Compared with conventional ferromagnetic materials, ferrimagnetic materials have the advantages of antiferromagnetically coupled sublattices and induced ultrafast spin dynamics. In this paper, we study the current-induced magnetization switching in the ferrimagnetic Ta/GdFeCo/MgO system. Robust SOT-induced magnetization switching can be achieved at the magnetic compensation temperature point of around 70 K, where the magnetization is nearly zero and the coercivity can reach almost 3 T. The temperature dependence of the SOT efficiency is quantified by the second harmonic method, and the enhanced SOT efficiency near the magnetic compensation temperature is attributed to the negative exchange coupling between the two sublattices of CoFe and Gd. This work demonstrates the SOT switching of the nearly compensated ferrimagnet, with great potential for future magnetic interaction-free and ultrafast ferrimagnetic applications.
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