Field-induced magnetization structure in small isotropic spheres

Author

Aharoni, Amikarn ; Jakubovics, J.P.

Author_Institution

Dept. of Electron., Weizmann Inst. of Sci., Rehovot, Israel

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4463

Lastpage

4468

Abstract

Computations of cylindrically-symmetric magnetization distributions are reported for a perfect and isotropic ferromagnetic sphere. The total energy is minimized numerically for various applied fields, with no constraint other than imposing that symmetry. It is found that the curling configuration at zero field is maintained throughout the whole magnetization process, with only a tilt towards the field direction, which increases with increasing field. There is no hysteresis in such an ideally-soft sphere, and the theoretical initial susceptibility is infinite

Keywords

amorphous magnetic materials; ferromagnetism; magnetic particles; magnetic susceptibility; magnetisation; amorphous particles; applied fields; curling configuration; cylindrically-symmetric magnetization distributions; field direction; field-induced magnetization structure; hysteresis; ideally-soft sphere; initial susceptibility; isotropic ferromagnetic sphere; small isotropic spheres; total energy; zero field; Amorphous materials; Anisotropic magnetoresistance; Electronic mail; H infinity control; Hysteresis; Magnetic materials; Magnetic susceptibility; Magnetization; Magnetostriction; Shape;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.538899

Filename

538899