The design of laser texture media using acoustic emission measurements

Author

Goh, Wilfred ; Jiaa, Chi ; Teng, Edward ; Eltoukhy, Atef

Author_Institution

StorMedia Inc., Santa Clara, CA, USA

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3199

Lastpage

3201

Abstract

Investigates the flying and contact phenomena of proximity contact recording and flying sliders. The tribological performance of thin film laser textured media is studied with acoustic emission analysis. The laser bump height and density were controlled to achieve a desired tribological performance. The relationship between the laser bump height/density and acoustic emission energy during drag and start/stop testing for different slider designs was studied. Emphasis was also placed on identifying the critical parameters of media and slider designs for tribological performance improvements. Reliability and glide height avalanche testing results were found to correlate well with the acoustic emission energy data

Keywords

acoustic emission testing; density; hard discs; laser materials processing; magnetic heads; magnetic recording; mechanical contact; sliding friction; surface texture; wear; acoustic emission energy; acoustic emission measurements; critical parameters; density; disk drives; drag; flying sliders; glide height avalanche testing results; laser bump height; laser texture media; magnetic recording head; proximity contact recording; reliability; rigid disks; slider designs; start/stop testing; thin film laser textured media; tribological performance; ultra high magnetic recording density; Acoustic emission; Acoustic testing; Cascading style sheets; Disk recording; Magnetic heads; Magnetic recording; Optical control; Optical design; Optical pulse generation; Performance analysis; Surface emitting lasers; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617890

Filename

617890