A new laser texturing technique for high performance magnetic disk drives

Abstract

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. © 1995 IEEE