Title :
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
fDate :
11/1/1988 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
