Hard magnetic FePt thin films and nanostructures in L10 phase

被引：5
|
作者：
Goll, D. [1 ]
Breitling, A. [1 ]
Goo, N. H. [1 ]
Sigle, W. [1 ]
Hirscher, M. [1 ]
Schuetz, G. [1 ]
机构：
[1] Max Planck Inst Met Res, D-70569 Stuttgart, Germany
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2006年 / 13卷
关键词：
nanostructure; hard magnetic film; coercivity; L1(0) structure;
D O I：
10.1016/S1006-706X(08)60166-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
By using high-resolution transmission electron microscopy the formation of the L1(0) phase in Fe-Pt multilayer can be studied in-situ during annealing. The formation of L1(0)-FePt nuclei starts in the Pt layers by diffusion of Fe into the Pt layers. During annealing the L1(0)-FePt nuclei grow in size and expand over the whole film. By using electron lithography patterned L1(0)-Fe54Pt46 nanostructures have been produced. Below a critical dot thickness during post-annealing at high temperatures the dots split into an accumulation of isolated (single-domain) particles of irregular shape resulting in large coercivities of mu H-0(c) = 2.4 T.
引用
收藏
页码：97 / 101
页数：5
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