Reduction of media noise in thin film metal media by lamination

Author

Lambert, S.E. ; Howard, J.K. ; Sanders, I.L.

Author_Institution

UBM Almaden Res. Center, San Jose, CA, USA

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2706

Lastpage

2708

Abstract

The properties of laminated films of longitudinal Co-alloy media have been investigated. Significant reductions in the media noise are observed compared with single-layer films of the same total thickness, while the signal amplitude is unaffected. There are at least two reasons for this improved performance. Thin media layers exhibit inherently better signal-to-media-noise ratios, which are retained when several thin films are separated by nonmagnetic interlayers. A laminated media structure also offers a media-noise advantage since noise sources in the individual magnetic layers can be independent of one another. It is concluded that lamination can be used to improve the noise performance of metal-film media by simply repeating known process steps

Keywords

cobalt alloys; magnetic recording; magnetic thin films; metallic thin films; noise; laminated films; lamination; media noise; nonmagnetic interlayers; signal amplitude; signal-to-media-noise ratios; thin film metal media; Lamination; Magnetic films; Magnetic heads; Magnetic noise; Magnetic recording; Magnetic separation; Magnetosphere; Noise level; Noise reduction; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104845

Filename

104845