Energy barrier of magnetization reversal in a magnetic wire with defects

Yuejin Zhu; Xian Yu; Shufeng Zhang

doi:10.1103/PhysRevB.78.144411

Energy barrier of magnetization reversal in a magnetic wire with defects

Yuejin Zhu, Xian Yu, Shufeng Zhang

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

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°untwisted domain wall. The possible experimental realization of our results is discussed.

Original language	English (US)
Article number	144411
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.78.144411
State	Published - Oct 9 2008
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.78.144411

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abstract = "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°untwisted domain wall. The possible experimental realization of our results is discussed.",

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AB - 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°untwisted domain wall. The possible experimental realization of our results is discussed.

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Energy barrier of magnetization reversal in a magnetic wire with defects

Abstract

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