In-Situ Technology for Evaluating the Stability of a Slider in 2 Dimensions

Wei ZHANG  Bo LIU  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E86-C   No.9   pp.1874-1878
Publication Date: 2003/09/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Recent Progress of High-Density Disk Storage)
Category: 
Keyword: 
flying stability,  head position stability,  high density magnetic recording,  magnetic disk drives,  

Full Text: PDF>>
Buy this Article




Summary: 
As head-disk spacing is reduced, the effects caused by inter-molecular level interactions between head-slider and disk media are becoming a severe stability concern of head-slider's positioning in both flying height and track following directions. Therefore, there is a need to explore simple but effective methods for characterizing two dimensional (2D) stability. Ideally methods should be easy to implement in both the laboratory and in the quality control of disk drive and component manufacturing. A reading process based in-situ method is explored in this work. The method is simple and can effectively reveal the 2D stability of the head-slider in both laboratory and manufacturing environments. The results obtained also suggest that the observable sway mode vibration of the suspension can be excited earlier than the air-bearing vibration mode, when the flying height is reduced.