A flat-head/bump-disk apparatus for evaluating the accuracy of a flying height tester

Author

Li, Yufeng ; Menon, Aric ; Goglia, Peter

Author_Institution

Sengate Technol., Bloomington, MN, USA

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3678

Lastpage

3680

Abstract

A flat-head/bump-disk apparatus, consisting of a 70% catamaran head made of Al₂O₃-TiC material without leading taper, and a BK-7 borosilicate crown glass disk, has been built to investigate the measurement accuracy of a flying height tester. Compared with existing flying height tester calibration standards, this apparatus allows one to estimate the amount of elastic deformation occurring at the bump/disk interface, relax the strict requirements of head rail and disk surface flatness, and eliminate manual load/unload operations. With this apparatus, good agreements have been obtained between profilometer measured bump heights and flying height tester measured head/disk separations under 60 nm

Keywords

calibration; height measurement; magnetic disc storage; magnetic heads; magnetic recording; Al₂O₃-TiC; Al₂O₃-TiC material; K-7 borosilicate crown glass disk; bump/disk interface; calibration standard; catamaran head; elastic deformation; flat-head/bump-disk apparatus; flying height tester; measurement accuracy; profilometer; Bridges; Calibration; Glass; Magnetic heads; Manuals; Materials testing; Measurement standards; Performance evaluation; Rails; Standards development;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.538726

Filename

538726