Micromagnetic modeling of permalloy particles: thickness effects

Author

Koehler, T.R. ; Fredkin, D.R.

Author_Institution

IBM Almaden Res. Center, San Jose, CA, USA

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4763

Lastpage

4765

Abstract

The authors simulated magnetization reversal in high aspect ratio, rectangular permalloy particles in the thickness range 125 Å to 1500 Å. There is significant variation of behaviour over this range. Trends for coercivity, hysteresis loops, reversal mechanism, and remanent states, especially as they are influenced by the increased three-dimensionality of the particle, are presented. Special attention is given to the formation of a low moment state when an in-plane, transverse field is applied

Keywords

Permalloy; coercive force; ferromagnetic properties of substances; magnetic hysteresis; magnetic properties of fine particles; magnetisation reversal; remanence; 125 to 1500 angstroms; aspect ratio; coercivity; hysteresis loops; magnetisation reversal simulation; micromagnetic modelling; rectangular permalloy particles; remanent states; reversal mechanism; thickness effects; transverse field; Coercive force; Magnetic field measurement; Magnetic hysteresis; Magnetic recording; Magnetization reversal; Micromagnetics; Numerical simulation; Particle measurements; Physics; Remanence;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278939

Filename

278939