Contribution of the magnetic anisotropy of the stabilization layer to the thermal stability of synthetic ferrimagnetic media

被引：18
|
作者：
Acharya, BR [1 ]
Ajan, A [1 ]
Abarra, EN [1 ]
Inomata, A [1 ]
Okamoto, I [1 ]
机构：
[1] Fujitsu Labs Ltd, Atsugi, Kanagawa 2430197, Japan
来源：
APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 01期
关键词：
D O I：
10.1063/1.1430858
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A study is reported on synthetic ferrimagnetic media, which is made of an initial or stabilization magnetic layer (L1) closer to the substrate and a thicker top magnetic layer (L2) separated by a Ru spacer layer. The effects of the magnetic anisotropy (KU-L1) and the thickness (t(L1)) of the stabilization layer on the thermal stability of synthetic ferrimagnetic media are systematically studied. The magnetic anisotropy KU-L1 is varied by changing the Pt content of CoCrPtB alloy while a constant thickness and the same composition are retained for the L2. Media coercivity, stabilization factor KUV/k(B)T, and thermal stability increase as a function of t(L1). For a particular t(L1) value, these factors are improved for higher KU-L1, though the interlayer antiferromagnetic coupling strength is decreased due to compositional changes. (C) 2002 American Institute of Physics.
引用
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页码：85 / 87
页数：3
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