Genesis and evolution of lubricant moguls

Presents studies on lubricant mogul formation when a slider flies over a disk surface. In the range of parameters used in this study, moguls form and reach a steady-state pattern within 100 revolutions. During this period, no significant net lubricant loss is observed in the track. The completion of...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2002-09, Vol.38 (5), p.2111-2113
Main Authors: Qing Dai, Saint-Olive, C., Pit, R., Marchon, B.
Format: Article
Language:English
Subjects:
Applied sciences
Electronics
Exact sciences and technology
Focusing
Frequency
Glass
Lubricants
Magnetic analysis
Magnetic devices
Magnetic thin film devices: magnetic heads (magnetoresistive, inductive, etc.)
domain-motion devices, etc
Magnetism
Optical films
Optical losses
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Steady-state
Substrates
Surface topography
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Description
Summary:Presents studies on lubricant mogul formation when a slider flies over a disk surface. In the range of parameters used in this study, moguls form and reach a steady-state pattern within 100 revolutions. During this period, no significant net lubricant loss is observed in the track. The completion of the full mogul pattern is followed by an asymptotic lubricant loss from the track. The loss was not compensated by an increase in thickness outside the track. It is speculated that this lubricant loss from the disk is initiated when the peak thickness of the moguls exceeds the critical dewetting thickness, therefore allowing an energetically favored process. Theoretical modeling based on Van der Waal's interactions is presented.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2002.802839