Fluctuation fields of reversal in oriented and non-oriented barium ferrite media

Author

Patel, V. ; El-Hilo, M. ; O´Grady, K. ; Chantrell, R.W.

Author_Institution

SEES, Univ. Coll. of North Wales, Bangor, UK

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3622

Lastpage

3624

Abstract

Measurements of time dependent magnetization have been made on samples of partially oriented and nonoriented barium ferrite recording media. From these data and complementary measurements of the irreversible susceptibility, the variation of the fluctuation field H_f with applied field has been obtained. For the nonoriented sample the variation is quite broad whereas for the aligned case a rapid variation is found. These different types of behavior are attributed to the marked differences in the interaction configurations in the two samples. The interaction in the samples has been characterized via the delta I technique

Keywords

barium compounds; ferrimagnetic properties of substances; ferrites; magnetic hysteresis; magnetic properties of fine particles; magnetic recording; magnetic susceptibility; magnetic tapes; magnetisation reversal; BaFe₁₂O₁₉; ferrite powder; fluctuation field reversal; interaction configurations; irreversible susceptibility; magnetic tape sample; nonoriented Ba ferrite recording media; partially oriented recording media; time dependent magnetization; Anisotropic magnetoresistance; Barium; Ferrites; Fluctuations; Magnetic anisotropy; Magnetic field measurement; Magnetic materials; Magnetic recording; Perpendicular magnetic anisotropy; Remanence;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281249

Filename

281249