Energy barrier of magnetization reversal in a magnetic wire with defects

Yuejin Zhu, Xian Yu, Shufeng Zhang

Research output: Contribution to journalArticle

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 languageEnglish (US)
Article number144411
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number14
DOIs
StatePublished - Oct 9 2008

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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