Spin–orbit torque induced magnetization switching in the W/CoFeB/Zr/MgO multilayers with high thermal stability
Source abstract
Abstract
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 °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 β-W to a mediate resistive amorphous-like structure. Therefore, the absolute spin Hall conductance increases from 765 of β-W to 1420 (ℏ/e)(Ω 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.
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Research context
OpenAlex topics: Magnetic properties of thin films · ZnO doping and properties · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences 1 , Beijing 100190, China
Department of Materials Physics and Chemistry, University of Science and Technology Beijing 2 , Beijing 100083, China
Institute of Microstructure and Property of Advanced Materials, Beijing Key Lab of Microstructure and Property of Advanced Materials, Beijing University of Technology 3 , Beijing 100124, China
Collaborative Innovation Center of Advanced Steel Technology, University of Science and Technology Beijing 4 , Beijing 100083, China
Spallation Neutron Source Science Center 5 , Dongguan 523803, China
Department of Physics, Pohang University of Science and Technology 6 , Pohang 37673, Republic of Korea
Songshan Lake Materials Laboratory 7 , Dongguan 523808, China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China · Beijing Outstanding Young Talents · National Research Foundation of Korea
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