Spin-orbit torque induced magnetization switching in the W/CoFeB/Zr/MgO multilayers with high thermal stability

被引：1
|
作者：
Guo, Q. X. [1 ,2 ,3 ]
Zheng, Z. C. [3 ]
Wang, L. H. [4 ]
Wang, K. [3 ]
Wang, X. M. [5 ]
Cheng, S. [6 ]
He, W. [1 ,2 ]
Yu, G. H. [3 ]
Lee, H. -W. [7 ]
Guo, Y. Q. [6 ]
Teng, J. [3 ]
Zhu, T. [1 ,2 ,6 ,8 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[3] Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China
[4] Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[5] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
[6] Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China
[7] Pohang Univ Sci & Technol, Dept Phys, Pohang 37673, South Korea
[8] Songshan Lake Mat Lab, Dongguan 523808, Peoples R China
来源：
APL MATERIALS | 2023年 / 11卷 / 11期
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
ANISOTROPY;
D O I：
10.1063/5.0168705
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We demonstrate the spin-orbit torque (SOT) induced perpendicular magnetization switching in an annealed W/CoFeB/Zr/MgO multilayer with high thermal stability. It is found that the thermal stability factor can reach 79 after annealing at 540 degrees C. With an increase in the annealing temperature, the absolute damping-like efficiency almost keeps a high constant value (about 0.3). The tungsten in the W/CoFeB/Zr/MgO multilayer could convert from the high resistive beta-W to a mediate resistive amorphous-like structure. Therefore, the absolute spin Hall conductance increases from 765 of beta-W to 1420 ((h) over bar /e)(Omega cm)(-1) of the amorphous-like tungsten. These results pave a realistic way for the practical application of tungsten in the SOT-based spintronics devices with high thermal stability and SOT efficiency. (c) 2023 Author(s).
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页数：8
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