Dynamic coupling of SGEMP cavity fields to particulate magnetic media

Author

Markes, M.E. ; Book, P.S.

Author_Institution

Kaman Sci. Corp., Colorado Springs, CO, USA

Volume

36

Issue

6

fYear

1989

fDate

12/1/1989 12:00:00 AM

Firstpage

2058

Lastpage

2065

Abstract

An idealized dynamic model for magnetization reversal of a magnetic recording particle is solved numerically for damped oscillating fields over a range of frequencies. The adjustable parameters in the model are set by matching the model response to measurements obtained from published data. For the particular media studied, the results indicate that the dynamic switching threshold is not significantly lower than the quasi-static threshold and that dynamic upset by box IEMP (interior electromagnetic pulse) fields is unlikely

Keywords

electromagnetic pulse; magnetic disc storage; magnetic recording; magnetisation reversal; numerical methods; SGEMP cavity fields; box IEMP; damped oscillating fields; dynamic coupling; dynamic switching threshold; dynamic upset; idealized dynamic model; interior electromagnetic pulse; magnetic recording particle; magnetization reversal; model response; numerical method; particulate magnetic media; quasi-static threshold; Coercive force; Couplings; Frequency; Magnetic domains; Magnetic field measurement; Magnetic particles; Magnetic resonance; Magnetization reversal; Perpendicular magnetic recording; Shape;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.45405

Filename

45405