Transverse susceptibility and remanence characteristics of barium ferrite hand spread coatings as a function of milling time

Author

Sollis, P.M. ; Bissell, P.R. ; Chantrell, R.W.

Author_Institution

Univ. of Central Lancashire, Preston, UK

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4101

Lastpage

4103

Abstract

Transverse susceptibility measurements have been carried out on a series of hand spread coatings made from a barium ferrite dispersion as a function of milling time. In the initial stages of the dispersion the anisotropy peak was suppressed. This could be attributed to the variation of the internal field in individual barium ferrite particles. As stacking developed in the system during dispersion, the anisotropy peak became more pronounced. The position of the maximum also moved to higher fields consistent with a change in shape anisotropy contribution

Keywords

barium compounds; disperse systems; ferrites; magnetic anisotropy; magnetic particles; magnetic recording noise; magnetic susceptibility; magnetic thin films; remanence; Ba ferrite; BaFe₁₂O₁₉; anisotropy peak; hand spread coatings; milling time; particle platelets; particulate recording media; recording noise; remanence characteristics; shape anisotropy contribution; stacking; transverse susceptibility; Anisotropic magnetoresistance; Barium; Coatings; Dispersion; Ferrites; Milling; Remanence; Shape; Stacking; Time measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334002

Filename

334002