期刊
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
卷 55, 期 11, 页码 2030-2032出版社
SCIENCE PRESS
DOI: 10.1007/s11433-012-4839-x
关键词
spin-transfer torque; hard-axis anisotropy; Walker breakdown field
资金
- National Natural Science Foundation of China [50831002, 50971025, 51071022, 11174031]
- Program for Changjiang Scholars and Innovative Research Team in University [2011031]
- Beijing Municipal Natural Science Foundation [2102032]
- Fundamental Research Funds for Central Universities
The current-driven domain wall motion was investigated on permalloy nanowires with different dimensions by micromagnetic simulations. The critical current density increased with the reduction in both the width and thickness of nanowires because of the enhanced hard-axis anisotropy. At a thickness of 5 nm, the critical current density decreased with the reduction of the nanowire width because of the reduced domain wall width.
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