Title :
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
fDate :
11/1/1990 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
