A mean field Stoner-Wohlfarth hysteresis model

Author

Atherton, David L. ; Beattie, J.R.

Author_Institution

Dept. of Phys., Queen´´s Univ., Kingston, Ont., Canada

Volume

26

Issue

6

fYear

1990

fDate

11/1/1990 12:00:00 AM

Firstpage

3059

Lastpage

3063

Abstract

A model of magnetic hysteresis is proposed. It is based on the Stoner-Wohlfarth coherent rotation model, but with a macroscopic mean field interaction (similar to Weiss´s molecular field theory), added to represent interaction between domains. Rotation of domain magnetization vectors gives both reversible and irreversible changes in bulk magnetization. A qualitative correlation is obtained between hysteresis curves calculated using this theoretical model and experimentally measured hysteresis curves of a ferrite permanent magnet

Keywords

magnetic domains; magnetic hysteresis; magnetisation reversal; Stoner-Wohlfarth coherent rotation model; domain interaction; domain magnetisation vector rotation; ferrite permanent magnet; irreversible changes; macroscopic mean field interaction; magnetic hysteresis; mean field Stoner-Wohlfarth hysteresis model; reversible changes; Anisotropic magnetoresistance; Ferrimagnetic materials; Ferrites; Magnetic anisotropy; Magnetic hysteresis; Magnetic materials; Magnetic recording; Mathematical model; Perpendicular magnetic anisotropy; Saturation magnetization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.102891

Filename

102891