Influence of different substrates on potential magnetic degradation during slider-disk impact

Author

Wang, Ji-Wen ; Yuan, Zhi-Min ; Liu, Bo ; Ding, Jun

Author_Institution

Dept. of Mater. Sci., Nat. Univ. of Singapore, Singapore

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2686

Lastpage

2688

Abstract

Slider-disk impact causes flash temperature rise on the disk surface, which may lead to magnetic erasure. The substrates with different thermal conductivity and Young´s modulus show different influences on the flash temperature rise and magnetic erasure. The simulation results show that substrates with low thermal conductivity and high Young´s modulus will cause higher flash temperature rise and larger thermal stress. It is suggested to use the substrate or intermediate layer with high thermal conductivity in magnetic media in order to reduce the probability of magnetic erasure by slider-disk impact

Keywords

Young´s modulus; impact (mechanical); magnetic disc storage; magnetic heads; substrates; thermal conductivity; thermal stresses; Young modulus; flash temperature; magnetic erasure; magnetic recording head; slider-disk impact; substrate; thermal conductivity; thermal stress; Equations; Magnetic flux; Magnetic heads; Magnetic recording; Magnetostriction; Material properties; Temperature dependence; Thermal conductivity; Thermal degradation; Thermal stresses;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908559

Filename

908559