Dynamic effects of quenched disorder on domain wall motion in magnetic nanowires

被引：5
作者：
He, Y. Y. [1 ]
Zheng, B. [1 ]
Zhou, N. J. [2 ]
机构：
[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China
[2] Hangzhou Normal Univ, Dept Phys, Hangzhou 310036, Zhejiang, Peoples R China
来源：
PHYSICAL REVIEW B | 2016年 / 94卷 / 13期
基金：
中国国家自然科学基金;
关键词：
TRANSITION;
D O I：
10.1103/PhysRevB.94.134302
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The domain wall dynamics in magnetic nanowires is numerically studied with the Landau-Lifshitz-Gilbert equation. Below the Walker breakdown threshold, the domain wall presents a stable propagation, while above the threshold where the retrograde mode dominates, the oscillation period is controlled by the external field and anisotropy. More importantly, the dynamic effects of quenched disorder on the domain wall motion are explored. A continuous pinning-depinning phase transition is detected. The dynamic scaling form is analyzed with the data collapse of the domain wall velocity, and both the static and dynamic critical exponents are extracted.
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页数：7
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