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Simulation of Magnetic Erasure Due to Transient Slider-Disk Contacts

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4 Author(s)
Ovcharenko, A. ; Center for Magn. Recording Res., Univ. of California, La Jolla, CA, USA ; Min Yang ; Chun, K. ; Talke, F.E.

Erasure of magnetic information due to transient slider-disk contacts is investigated. A three-dimensional thermal-mechanical model of a transient contact between a slider and a multilayered thin film disk is developed. Temperature and plastic strain distributions in the contact zone are evaluated and erasure of information is determined based on a simplified erasure criterion. The effect of material properties and impact conditions on erasure is determined for disks with glass and aluminum substrate. Design recommendations for minimization of erasure are discussed.

Published in:

Magnetics, IEEE Transactions on  (Volume:46 ,  Issue: 3 )

Date of Publication:

March 2010

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