Title :
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
fDate :
9/1/1996 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
