Exchange-coupled L10-FePt/Fe composite patterns with perpendicular magnetization

被引：24
作者：
Breitling, A. [1 ]
Bublat, T. [1 ]
Goll, D. [1 ]
机构：
[1] Max Planck Inst Met Res, D-70569 Stuttgart, Germany
来源：
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2009年 / 3卷 / 05期
关键词：
FEPT; FIELDS; MEDIA;
D O I：
10.1002/pssr.200903074
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
L1(0)-FePt and exchange-coupled L1(0)-FePt/Fe composite films are grown epitaxially on MgO(001) single crystal substrates and are subsequently large-area patterned utilizing an electron beam lithography process with Ar+ ion etching. The patterning process of the continuous film system leads to a different demagnetization behavior resulting in an increase of the out-of-plane coercivity of the patterned samples. Due to exchange-coupling between L1(0)-FePt and Fe the coercivity of the L1(0)-FePt/Fe composite patterns is reduced by 52% as compared to the coercivity of L1(0)-FePt patterns. From the analysis of the temperature dependence of the coercivity it follows that the dots include regions with reduced anisotropy. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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收藏
页码：130 / 132
页数：3
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