Stoner-Wohlfarth hysteresis model with stochastic input as a model of viscosity in magnetic materials

Author

Friedman, G. ; Mayergoyz, I.D.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

2262

Lastpage

2264

Abstract

The Stoner-Wohlfarth hysteresis model with stochastic input is used to describe viscosity or creep in magnetic materials. An expression for the expected value of the magnetic moment of Stoner-Wohlfarth particles as a function of time is derived. It is found that this expected value for each particle decays exponentially to a history-independent value. An expression for the expected value of the average magnetization as given by the Stoner-Wohlfarth model is derived. The analysis is based on the Preisach-like formalism proposed for the Stoner-Wohlfarth model

Keywords

magnetic hysteresis; magnetic moments; magnetic properties of fine particles; magnetisation; stochastic processes; viscosity; Preisach-like formalism; Stoner-Wohlfarth hysteresis model; Stoner-Wohlfarth particles; average magnetization; creep; magnetic materials; magnetic moment; stochastic input; viscosity; Anisotropic magnetoresistance; Creep; Magnetic anisotropy; Magnetic hysteresis; Magnetic materials; Magnetic moments; Magnetization; Perpendicular magnetic anisotropy; Stochastic processes; Viscosity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179463

Filename

179463