A new laser texturing technique for high performance magnetic disk drives

A novel approach to texturing a landing zone at the inner diameter of a magnetic disk is presented. The technique employs a high repetition rate short-pulsed laser to create discrete topographical features with rounded, dome-like protrusions ("bumps"). These bumps serve as smooth support p...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1995-11, Vol.31 (6), p.2946-2951
Main Authors: Baumgart, P., Krajnovich, D.J., Nguyen, T.A., Tam, A.G.
Format: Article
Language:English
Subjects:
Applied sciences
Disk drives
Electronics
Exact sciences and technology
Laser beams
Laser transitions
Magnetic devices
Magnetic separation
Microscopy
Optical pulses
Other magnetic recording and storage devices (including tapes, disks, and drums)
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Space vector pulse width modulation
Surface cleaning
Surface emitting lasers
Surface topography
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Description
Summary:A novel approach to texturing a landing zone at the inner diameter of a magnetic disk is presented. The technique employs a high repetition rate short-pulsed laser to create discrete topographical features with rounded, dome-like protrusions ("bumps"). These bumps serve as smooth support points for the contacting slider. The laser texture technique provides precision in the landing zone placement while eliminating the transition zone of a mechanically textured landing zone. It also provides excellent tribological performance in terms of low contact start/stop stiction and good durability.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.490199