Dynamics of nonlinearities in high density recording

Author

Che, Xiaodong ; Bertram, H.N.

Author_Institution

Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA

Volume

29

Issue

1

fYear

1993

fDate

1/1/1993 12:00:00 AM

Firstpage

317

Lastpage

323

Abstract

A micromagnetic model is used to study nonlinearities in high-density recording. Head imaging is taken into account approximately to model near contact recording. The simulations are able to show detailed steps of a dibit transition formation and illustrate the effect of the image field. Nonlinear amplitude reduction as a result of zigzag transition percolation is calculated at different recording densities and flying heights. The numerical results agree very well with experiment. Effects of medium exchange coupling and medium orientation on the amplitude loss are also investigated

Keywords

hard discs; magnetic recording; percolation; amplitude loss; dibit transition formation; dynamics of nonlinearities; head imaging; high density recording; image field; medium exchange coupling; medium orientation; micromagnetic model; near contact recording; zigzag transition percolation; Crystallization; Magnetic films; Magnetic heads; Magnetic noise; Magnetic recording; Magnetic separation; Magnetization; Magnetostatic waves; Micromagnetics; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.195588

Filename

195588