The effect of curvature on domain wall energy and thickness

Author

Jatau, James A. ; Della Torre, Edward

Author_Institution

Inst. for Magnetics Res., George Washington Univ., Washington, DC, USA

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4927

Lastpage

4929

Abstract

The variation in energy and thickness of a domain wall under the action of an applied magnetic field is investigated using a two-dimensional micromagnetic model, where it is assumed that the wall is pinned by inclusions. It is shown that there is an increase in wall energy due to the curvature produced in the wall, but that the change in this energy is small, It is also shown that although there is an appreciable variation in the thickness of the domain wall at the pinning points there is no change in thickness at its midpoint with increasing magnetic field. The curvature of the wall was found to depend on the pinning strength of the inclusions

Keywords

coercive force; magnetic domain walls; magnetic domains; 2D micromagnetic model; applied magnetic field; curvature; domain wall energy; domain wall thickness; inclusions; pinning strength; Anisotropic magnetoresistance; Coercive force; Deformable models; Magnetic domain walls; Magnetic fields; Magnetic materials; Magnetization; Micromagnetics; Numerical models; Structural rods;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334268

Filename

334268