Authors

K. R. Coffey; T. Thomson;J. U. Thiele

Comments

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Abbreviated Journal Title

J. Appl. Phys.

Keywords

SWITCHING FIELD; Physics, Applied

Abstract

The results of angular measurements of the remanent switching fields for granular longitudinal and perpendicular magnetic recording media are presented and compared to idealized models of magnetic switching. Co alloy longitudinal and perpendicular recording media are found primarily to have a Stoner-Wohlfarth switching character at vibrating sample magnetometer time scales. Since the Stoner-Wohlfarth model does not consider the effects of thermal activation, the angular dependence of the time independent switching field H-swro(theta) was determined from a Sharrock analysis. This approach shows a closer agreement between experimental data and model. For the case of a representative high density longitudinal recording medium, we additionally investigate the switching field distribution.

Journal Title

Journal of Applied Physics

Volume

18

Issue/Number

10

Publication Date

1-1-2003

Document Type

Article

Language

English

First Page

8471

Last Page

8473

WOS Identifier

WOS:000180999100005

ISSN

0021-8979

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