Energy barrier of magnetization reversal in a magnetic wire with defects

Yuejin Zhu, Xian Yu, Shufeng Zhang

Research output: Contribution to journalArticle

4 Citations (Scopus)

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

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Magnetization reversal
Energy barriers
wire
Wire
magnetization
Defects
defects
sine-Gordon equation
Domain walls
domain wall
energy
coefficients

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Energy barrier of magnetization reversal in a magnetic wire with defects. / Zhu, Yuejin; Yu, Xian; Zhang, Shufeng.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 14, 144411, 09.10.2008.

Research output: Contribution to journalArticle

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