Thermal relaxation in antiferromagnetically coupled granular magnetic media

被引：10
|
作者：
Moser, A [1 ]
Margulies, DT [1 ]
Fullerton, EE [1 ]
机构：
[1] IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA
来源：
PHYSICAL REVIEW B | 2002年 / 66卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.66.092410
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using a conventional recording system we have characterized the thermally activated transition formation process in the lower layer of antiferromagnetically coupled magnetic recording media. We find that this thermal relaxation time depends strongly on the transition density, lower layer alloy composition, and layer thickness. A one-dimensional analytic model of coupled granular media that includes interlayer exchange, intergranular exchange, and magnetostatic energies is able to reproduce the observed results.
引用
收藏
页码：1 / 4
页数：4
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