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)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Oct 9 2008|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics