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Numerical simulations of the effect of record field pulse length on medium coercivity at finite temperatures

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2 Author(s)
Bertram, H.N. ; Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA ; Qingzhi Peng

Thin film media under consideration for high density recording in the range of 5 Gbit/in2 and beyond will utilize extremely small grains in order to achieve acceptable signal-to-noise ratio limits. Numerical simulations of the reversal process including thermal fluctuations are utilized to determine medium coercivity versus field duration. Typically media with grain diameter 10 nm will have a 23% decrease in coercivity over a 1-100 nsec range

Published in:

Magnetics, IEEE Transactions on  (Volume:34 ,  Issue: 4 )

Date of Publication:

Jul 1998

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