Domain wall structures and dynamics in thin films

Author

Yuan, Samuel W. ; Bertram, H. Neal

Author_Institution

Center for Magnetic Recording Res., California Univ., San Diego, CA, USA

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

5511

Lastpage

5513

Abstract

Computer simulation is used to study two-dimensional domain wall structures and dynamics in Permalloy thin films with easy axis parallel to the film plane. The effective wall mass and the viscosity coefficient are found to be one or two orders of magnitude greater than for one-dimensional bulk material. For external easy axis fields much larger than the anisotropy field, the wall motion exhibits turbulent behavior with vortex breakdown as a precursor, with an increasing hard axis field, the wall configuration changes from an asymmetric Bloch wall to a Neel wall

Keywords

Permalloy; magnetic domain walls; magnetic thin films; physics computing; Neel wall; Permalloy thin films; anisotropy field; asymmetric Bloch wall; computer simulation; easy axis fields; effective wall mass; hard axis field; turbulent behavior; two-dimensional domain wall structures; viscosity coefficient; vortex breakdown; wall configuration; wall motion; Anisotropic magnetoresistance; Magnetic anisotropy; Magnetic domain walls; Magnetic films; Magnetic flux; Magnetostatics; Perpendicular magnetic anisotropy; Saturation magnetization; Transistors; Viscosity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278886

Filename

278886