Structure and Mechanics Study of Slider Design for 5-15 nm Head-Disk Spacing

Gang SHENG  Bo LIU  Wei HUA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E82-C   No.12   pp.2125-2131
Publication Date: 1999/12/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Information Storage Technologies for the 21st Century)
Category: 
Keyword: 
magnetic recording,  head-disk interface,  mechanics and tribology,  MEMS,  

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Summary: 
An integrated slider-suspension system was designed and prototyped. The structure of this system has a full flying air-bearing surface in the leading part with a contamination-resistant feature, and it accommodates a slider with a 5-15 nm head-disk spacing at the trailing part. Performance analysis and simulation were conducted to validate the high performances of the design. Two key issues, the rigid motions (vibrations) and the elastic motions of the slider, were investigated systematically. For the rigid motions, it was found that the natural frequencies of the slider system are dependent on the disk contact stiffness and that the slider vibrations under excitation exhibit various nonlinear resonance. For the elastic motions, the average elastic response of the slider body under the random interaction of the interface was derived and characterized.