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TECHNICAL PAPERS

Load/Unload Systems With Multiple Flying Height States

[+] Author and Article Information
M. Suk, O. Ruiz, D. Gillis

Storage Technology Division, International Business Machines, 5600 Cottle Road, San Jose, CA 95193

J. Tribol 126(2), 367-371 (Apr 19, 2004) (5 pages) doi:10.1115/1.1576426 History: Received March 13, 2002; Revised October 08, 2002; Online April 19, 2004
Copyright © 2003 by ASME
Topics: Stress , Disks
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References

Figures

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A typical negative pressure slider used in simulation and experiments
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Multiple flying height states showing critical pre-load level for different PSA
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Dynamic load history compared to bi-stable states static solution. Jump to the lower state occurs after critical level is attained
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Spacing evolution during loading for various PSAs showing jump to lower state
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Relationship between critical PSA and pre-load
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Critical PSA value as a function of radial location
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Full transition of one load/unload cycle for a slider that initially loads at the high flying height state as measured by full body capacitance
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Change in the TE spacing as the slider changes from high flying state to low flying state
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Unload dynamics from high flying and low flying states
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Pitch evolution during loading for various PSAs showing negative pitching during the jump from HFHS to NFHS
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Air-bearing forces acting on the slider during loading for various PSAs

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