Energy barrier of magnetization reversal in a magnetic wire with defects

被引：6

作者：

Zhu, Yuejin ^{[1
]}

Yu, Xian ^{[1
]}

Zhang, Shufeng ^{[1
,2
]}

机构：

[1] Ningbo Univ, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China

[2] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 14期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevB.78.144411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider the energy barrier to magnetization reversal in a one-dimensional (1D) magnetic wire with defects. By solving the variable coefficient double Sine-Gordon equation, we obtain the dependence of the energy barrier on the strength and the range of a defect potential. We find that there is a minimum-energy barrier for two defects placed at an optimal distance which is correlated with the width of a 360 degrees untwisted domain wall. The possible experimental realization of our results is discussed.

引用

页数：5

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