Title :
Simulation of Magnetic Erasure Due to Transient Slider-Disk Contacts
Author :
Ovcharenko, Andrey ; Yang, Min ; Chun, Kaynam ; Talke, Frank E.
Author_Institution :
Center for Magn. Recording Res., Univ. of California, La Jolla, CA, USA
fDate :
3/1/2010 12:00:00 AM
Abstract :
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.
Keywords :
aluminium; disc drives; glass; magnetic heads; magnetic multilayers; magnetic thin films; mechanical contact; plastic deformation; substrates; Al; SiO2; aluminum substrate; glass substrate; magnetic erasure simulation; magnetic heads; magnetic information erasure; material properties; multilayered thin film disk; plastic strain distribution; temperature distribution; three-dimensional thermal-mechanical model; transient slider-disk contact; Magnetic analysis; Magnetic anisotropy; Magnetic field induced strain; Magnetoelasticity; Magnetostriction; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Plastics; Temperature; Thermal stresses; Magnetic erasure; multilayered media; slider-disk contact; thermal-mechanical model; transient contact;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2035092
