Journal
CHINESE PHYSICS B
Volume 31, Issue 12, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1674-1056/ac891d
Keywords
critical current density; magnetization reversal; perpendicular magnetization; hybrid driving
Categories
Funding
- ISF-NSFC Joint Research Project of International Cooperation and Exchanges
- National Natural Science Foundation of China
- Shaanxi Key Program for International Science and Technology Cooperation Projects
- Youth Innovation Team of Shaanxi Universities
- [51961145305]
- [52171191]
- [51771145]
- [2021KWZ-12]
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In this study, Pd/CoZr/MgO thin films with large perpendicular magnetic anisotropy were successfully prepared, and a method of reducing the critical current density with a low out-of-plane magnetic field was demonstrated. The magnetization reversal is a result of the combined effect of the out-of-plane magnetic field and the current-induced spin-orbital torque, and it is highly relevant to the temperature, with higher efficiency at low temperatures.
High critical current density (> 10(6) A/cm(2)) is one of major obstacles to realize practical applications of the current-driven magnetization reversal devices. In this work, we successfully prepared Pd/CoZr(3.5 nm)/MgO thin films with large perpendicular magnetic anisotropy and demonstrated a way of reducing the critical current density with a low out-of-plane magnetic field in the Pd/CoZr/MgO stack. Under the assistance of an out-of-plane magnetic field, the magnetization can be fully reversed with a current density of about 10(4) A/cm(2). The magnetization reversal is attributed to the combined effect of the out-of-plane magnetic field and the current-induced spin-orbital torque. It is found that the current-driven magnetization reversal is highly relevant to the temperature owing to the varied spin-orbital torque, and the current-driven magnetization reversal will be more efficient in low-temperature range, while the magnetic field is helpful for the magnetization reversal in high-temperature range.
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