Lubricant Dynamics in the Sub-Nanometer Clearance Regime

This paper reviews the present state of understanding of lubricant-slider interactions in a rigid disk drive. As slider flying heights are rapidly approaching the intrinsic limit of a disk topography (1-3 nm), it has become apparent that disk-slider clearance of less than a nanometer can be achieved...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2007-09, Vol.43 (9), p.3694-3698
Main Authors: Marchon, B.., Qing Dai, Knigge, B.., Pit, R..
Format: Article
Language:English
Subjects:
Clearances
Coils
Disk drive
Disk drives
Disks
Flying
Laboratories
Lubricant films
Lubricants
Lubrication
Magnetic heads
Magnetism
Sliders
Surface topography
Topography
Tribology
Viscosity
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Summary:This paper reviews the present state of understanding of lubricant-slider interactions in a rigid disk drive. As slider flying heights are rapidly approaching the intrinsic limit of a disk topography (1-3 nm), it has become apparent that disk-slider clearance of less than a nanometer can be achieved, at least on a laboratory setup. We will discuss the implication of such low spacing on the lubricant film behavior, and provide general physical arguments that attempt to highlight lubricant attributes that are relevant under those clearance conditions.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2007.902972