Optimization of laser texture for the head-disk interface

Author

Liu, Jia Jay

Author_Institution

MaxMedia Div., Hyundai Electron. America, San Jose, CA, USA

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3202

Lastpage

3204

Abstract

This study provides the models to predict the relationship between laser process parameters and bump shape parameters. An analytical model and an empirical model to determine the radius of curvature are established. A stiction model which uses curvature information to predict the stiction force for V and W type laser texture is also presented and used for simulation. The results suggest that laser texture generated by a laser system with a smaller focus spot size and shorter pulse width has lower radius of rim curvature and lower stiction. Therefore, interface stiction can be minimized by optimizing the bump spacing arrangement and by proper selection of laser and optics

Keywords

hard discs; interface structure; laser materials processing; magnetic heads; magnetic recording; surface texture; surface topography; V type; W type; analytical model; bump shape parameters; bump spacing arrangement; curvature information; empirical model; head-disk interface; interface stiction; laser process parameters; laser texture; optimization; radius of curvature; radius of rim curvature; shorter pulse width; simulation; smaller focus spot size; stiction force; stiction model; Analytical models; Laser beams; Laser modes; Optical pulse generation; Optical pulse shaping; Optical pulses; Power lasers; Predictive models; Pulse measurements; Shape; Shape measurement; Space vector pulse width modulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617891

Filename

617891