Precise stiction mapping

Author

Best, G.L.

Author_Institution

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

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

5169

Lastpage

5171

Abstract

A technique for mapping the stiction on an entire disk is presented. A map is created by measuring the stiction at predetermined points on the disk. These points are precisely located and taken in a random order to prevent any alteration of the measurement occurring from sequential movement of the slider on the disk. From this map the statistical distribution of stiction on the disk is determined. Stiction mapping is also shown to reveal nonuniformities in the physical properties of the disk. Experimental mapping results show the effect of texture and start/stop wear on stiction. A special disk was fabricated with different textures in the inner and outer diameter regions. These two textures are easily detected by a stiction map even though both had the same coating types and thicknesses. A start/stop wear experiment is performed on the outer diameter region of this disk

Keywords

friction; hard discs; magnetic disc storage; magnetic heads; statistical analysis; wear testing; effect of texture; head/disc interface; magnetic discs; nonuniformities; outer diameter region; precise stiction mapping; rigid discs; start/stop wear; statistical distribution; Automatic control; Coatings; Force measurement; Humidity; Magnetic recording; Motion control; Position control; Position measurement; Statistical distributions; Strain measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278776

Filename

278776