Micromagnetic calculation of the transverse susceptibility of patterned media

Author

Spinu, L. ; Cimpoesu, D. ; Stoleriu, L. ; Stancu, A.

Author_Institution

Dept. of Phys., Univ. of New Orleans, LA, USA

Volume

39

Issue

5

fYear

2003

Firstpage

2516

Lastpage

2518

Abstract

A micromagnetic model based on the Landau-Lifshitz-Gilbert (LLG) equation for the transverse susceptibility (TS) of particulate media is presented. The model is able to take into account virtually any type of anisotropy including uniaxial, cubic, and unidirectional (exchange anisotropy), or any combinations of these anisotropies. The magnetostatic interaction between particles is also considered using a fast Fourier technique. The model is used to calculate the TS signal for two-dimensional arrays of particles (patterned media) with uniaxial and cubic anisotropy. It is shown that the effect of interaction strongly affects the TS signal for these magnetic systems.

Keywords

magnetic anisotropy; magnetic particles; magnetic susceptibility; micromagnetics; Landau-Lifshitz-Gilbert equation; cubic anisotropy; exchange anisotropy; fast Fourier technique; magnetostatic interaction; micromagnetic model; particulate media; transverse susceptibility; two-dimensional arrays; uniaxial anisotropy; Anisotropic magnetoresistance; Atmospheric modeling; Equations; Magnetic anisotropy; Magnetic materials; Magnetization; Magnetostatics; Micromagnetics; Perpendicular magnetic anisotropy; Physics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.816459

Filename

1233128