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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.

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