Title :
Measurement of head-disk spacing using laser heterodyne interferometry. II. Simulation and experiments
Author :
Smith, P.W. ; Ganapathi, S.K. ; Veillard, D.H.
Author_Institution :
Applied Magnetics Corp., Goleta, CA, USA
fDate :
11/1/1993 12:00:00 AM
Abstract :
For pt.I, see ibid., vol.29, pp.3909-3911 (Nov. 1993). Air bearing simulation and a laser heterodyne interferometer are used to investigate the air bearing features that may be effective in lowering takeoff velocity and thus reducing sliding wear. Slider dynamics, takeoff velocity and pitch angle of the slider during the initial stages are considered. The parameters studied include taper angle and load placement. Correlation between theory and experiment in the sub-0.25-μm range is shown and discussed
Keywords :
light interferometry; magnetic disc storage; measurement by laser beam; position measurement; air bearing features; head-disk spacing; laser heterodyne interferometry; load placement; pitch angle; slider dynamics; sliding wear; takeoff velocity; taper angle; Finite element methods; Instruments; Interferometry; Laser beams; Laser modes; Laser transitions; Magnetic heads; Rotation measurement; Steady-state; Velocity measurement;
Journal_Title :
Magnetics, IEEE Transactions on
