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

Q. X. Guo; Z. C. Zheng; L. H. Wang; K. Wang; X. M. Wang; S. Cheng; W. He; G. H. Yu; H.-W. Lee; Y. Q. Guo; J. Teng; T. Zhu

doi:10.1063/5.0168705

APL Materials (Nov 2023)

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

Q. X. Guo,
Z. C. Zheng,
L. H. Wang,
K. Wang,
X. M. Wang,
S. Cheng,
W. He,
G. H. Yu,
H.-W. Lee,
Y. Q. Guo,
J. Teng,
T. Zhu

Affiliations

Q. X. Guo: Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
Z. C. Zheng: Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China
L. H. Wang: Institute of Microstructure and Property of Advanced Materials, Beijing Key Lab of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
K. Wang: Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China
X. M. Wang: Collaborative Innovation Center of Advanced Steel Technology, University of Science and Technology Beijing, Beijing 100083, China
S. Cheng: Spallation Neutron Source Science Center, Dongguan 523803, China
W. He: Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
G. H. Yu: Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China
H.-W. Lee: Department of Physics, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
Y. Q. Guo: Spallation Neutron Source Science Center, Dongguan 523803, China
J. Teng: Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China
T. Zhu: Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China

DOI: https://doi.org/10.1063/5.0168705
Journal volume & issue: Vol. 11, no. 11
pp. 111126 – 111126-8

Abstract

Read online

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.

Published in APL Materials

ISSN: 2166-532X (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology; Science: Physics
Website: http://aplmaterials.aip.org

About the journal