Title :
Numerical simulations of the effect of record field pulse length on medium coercivity at finite temperatures
Author :
Bertram, H. Neal ; Peng, Qingzhi
Author_Institution :
Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA
fDate :
7/1/1998 12:00:00 AM
Abstract :
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
Keywords :
coercive force; grain size; magnetic recording; magnetic recording noise; magnetic thin films; acceptable signal-to-noise ratio limits; extremely small grains; finite temperatures; high density recording; medium coercivity; record field pulse length; reversal process; thermal fluctuations; Anisotropic magnetoresistance; Coercive force; Fluctuations; Grain size; Magnetic films; Magnetic recording; Magnetization; Numerical simulation; Pulse measurements; Signal to noise ratio;
Journal_Title :
Magnetics, IEEE Transactions on
