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

页码：369 / 372

页数：4

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