1. Spin-orbit torques in perpendicularly magnetized Ir22Mn78/Co20Fe60B20/MgO multilayer.
- Author
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Guoqiang Yu, Razavi, Seyed Armin, Qiming Shao, Xiang Li, Wong, Kin L., Congli He, Wang, Kang L., Di Wu, Amiri, Pedram Khalili, Ching-Tzu Chen, Bingcheng Zhao, and Zongzhi Zhang
- Subjects
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SPIN Hall effect , *TORQUE , *MAGNETIC materials , *IRIDIUM compounds , *COBALT compounds , *MAGNETIC properties of transition metal compounds , *MAGNESIUM oxide - Abstract
The current-induced spin-orbit torques (SOTs) in the perpendicularly magnetized Ir22Mn78/Co20Fe60B20/MgO structures are investigated. The damping- and field-like torques are characterized using a harmonic technique. The spin Hall angle of Ir22Mn78 is determined to be θSHE = +0.057 ± 0.002. The SOT-driven magnetization switching is also demonstrated with the assistance of an external in-plane field. Furthermore, the magneto-optical Kerr effect imaging experiments show that the magnetization switching is realized through domain nucleation and domain wall motion. These results may promise potential practical applications in high-performance SOT devices based on the antiferromagnetic materials. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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