Micromagnetic studies of interacting Permalloy particles

Author

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

Author_Institution

Dept. of Phys., California Univ., San Diego, La Jolla, CA, USA

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

3168

Lastpage

3170

Abstract

Pairs of interacting Permalloy particles of submicron size have been studied using a micromagnetic code based on the finite element method. The hysteretic properties of the pairs are affected by both the placements and the separations between particles. Plateaus are found in the hysteresis loops of most pairs placed side by side or one on top of the other. They correspond to antiferromagnetically aligned states. Most pairs may be brought to a cross-tie wall state. It is found that cross-tie wall formation is affected by the shapes of the particles at the ends

Keywords

Permalloy; ferromagnetic properties of substances; finite element analysis; magnetic domain walls; magnetic hysteresis; magnetic properties of fine particles; antiferromagnetically aligned states; cross-tie wall state; finite element method; hysteresis loops; hysteretic properties; interacting Permalloy particles; micromagnetic code; particle placement; particle separation; Antiferromagnetic materials; Coercive force; Finite element methods; Hysteresis; Magnetic analysis; Magnetic separation; Magnetization; Micromagnetics; Physics; Shape;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179747

Filename

179747