Calorimetric study of the inverse magnetocaloric effect in ferromagnetic Ni-Mn-Sn

被引：57
|
作者：
Moya, X.
Manosa, Ll.
Planes, A.
Krenke, T.
Duman, E.
Acet, M.
Wassermann, E. F.
机构：
[1] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Catalonia, Spain
[2] Univ Duisburg Essen, D-47048 Duisburg, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期
关键词：
Ni-Mn-Sn; Heusler alloy; martensitic transition; magnetocaloric effect;
D O I：
10.1016/j.jmmm.2007.03.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report calorimetric and magnetization results showing that an increase in entropy is induced in a Ni-Mn-Sn ferromagnetic alloy by the application of a magnetic field, thus giving rise to an inverse magnetocaloric effect (MCE). The entropy change found for Ni-Mn-Sn is comparable to that reported for giant magnetocaloric materials but with opposite sign. This inverse MCE has the origin in a crystallographic phase change that modifies the magnetic exchange interactions through the change in the lattice parameters. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：E572 / E574
页数：3
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