Measurement of sliding behavior of a magnetic head slider in CSS test

Author

Yanabe, S. ; Ito, M. ; Tanaka, K. ; Shinohara, T. ; Tsunematsu, H.

Author_Institution

Dept. of Mech. Eng., Technol. Univ. of Nagaoka, Niigata, Japan

Volume

24

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

2635

Lastpage

2637

Abstract

The sliding behavior of a magnetic head slider in contact-start-stop (CSS) operation is closely related to disk wear and disk failure. Two independent simple optical systems, each composed of a position photosensor and a laser, have been developed to measure the sliding motion. One is for detecting absolute vertical displacement with 0.04-μm resolution and the other measures absolute angular displacements with 1-s resolution. In the experiments, 5 1/4 in sputter disks, which are made to be easily damaged, and mini-Winchester sliders are used, and the slider motions in the contact-start-stop process are measured. Abnormal pitching motion of the slider, which seems to cause the disk damage, is found in the first rotation after the disk starts

Keywords

angular measurement; displacement measurement; magnetic heads; measurement by laser beam; wear testing; 0.04 micron; 5 1/4 in sputter disks; absolute angular displacements; absolute vertical displacement; contact-start-stop process; disk damage; disk failure; disk wear; laser; magnetic disc storage; magnetic head slider; mini-Winchester sliders; optical systems; pitching motion; position photosensor; sliding behavior; Cascading style sheets; Disk drives; Displacement measurement; Frequency; Magnetic films; Magnetic heads; Motion measurement; Optical interferometry; Rotation measurement; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92196

Filename

92196