2D wall profiles in exchange coupled bilayers

Author

Labrune, M. ; Miltat, J.

Author_Institution

Univ. Paris-Sud, Orsay, France

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

2569

Lastpage

2571

Abstract

Two-dimensional wall configurations in exchange coupled bilayers are calculated using numerical micromagnetic simulations. Starting with a 180° domain arrangement in zero field, full saturation is, under hard axis field, only reached for field values large with respect to the anisotropy field, due to the nucleation of 360° walls. Their collapse field is computed versus the magnitude of the interlayer exchange coupling. A novel hysteresis mechanism, specifically for large coupling constants and involving superposed 360° walls, is described

Keywords

Permalloy; exchange interactions (electron); ferromagnetic properties of substances; magnetic anisotropy; magnetic domain walls; magnetic hysteresis; magnetic multilayers; magnetic thin films; nucleation; numerical analysis; 2D wall profiles; NiFe; Permalloy; anisotropy field; collapse field; coupling constants; domain arrangement; exchange coupled bilayers; ferromagnetic coupling; hard axis field; hysteresis mechanism; interlayer exchange coupling; magnetic domain wall; nucleation; numerical micromagnetic simulations; two-dimensional wall configuration; Computational modeling; Couplings; Equations; Magnetic anisotropy; Magnetic separation; Magnetization; Magnetosphere; Magnetostatics; Micromagnetics; Perpendicular magnetic anisotropy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280951

Filename

280951