Exchange coupled rare-earth free Mn-Al/Fe nanocomposite magnets by spark plasma sintering

被引：8
|
作者：
Saravanan, P. [1 ]
Vinod, V. T. P. [2 ]
Cernik, Miroslav [2 ]
Chakravarty, Dibyendu [3 ]
Ghosal, P. [1 ]
Kamat, S. V. [1 ]
机构：
[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India
[2] Tech Univ Liberec, Dept Nat Sci, Inst Nanomat Adv Technol & Innovat, Liberec 46117 1, Czech Republic
[3] Int Adv Res Ctr Powder Met & New Mat, Hyderabad 500005, Andhra Pradesh, India
来源：
MATERIALS LETTERS | 2014年 / 137卷
关键词：
Metallic composites; Magnetic materials; Nanocomposites; Sintering;
D O I：
10.1016/j.matlet.2014.09.053
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structural and magnetic properties of Mn-Al/Fe nanocomposites fabricated by spark plasma sintering (SPS) followed by short annealing (SA) were investigated by varying the soft phase, Fe-content from 0 to 10 wt.%. The SPSed samples mainly revealed equilibrium beta-phase with some traces of gamma(2), epsilon and tau-phases and the intensity of tau-phase peaks tends to improve with the SA process. Upon increasing the Fe-content, the saturation magnetization (M-s) values of Mn-Al/Fe nanocomposites tend to increase; while their coercivity (H-c) values are found to be decreased. A good combination of H-c (2.3 kOe) and M-s (40.3 emu/g) values was obtained for the Mn-Al+5 wt.% Fe nanocomposite magnet. (c) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：369 / 372
页数：4
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