Journal
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Volume 55, Issue 11, Pages 2030-2032Publisher
SCIENCE PRESS
DOI: 10.1007/s11433-012-4839-x
Keywords
spin-transfer torque; hard-axis anisotropy; Walker breakdown field
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Funding
- 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
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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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