Large magnetic entropy change in Ni50Mn50-xInx Heusler alloys

被引：197

作者：

Pathak, Arjun Kumar ^{[1
]}

Khan, Mahmud ^{[1
]}

Dubenko, Igor ^{[1
]}

Stadler, Shane ^{[1
]}

Ali, Naushad ^{[1
]}

机构：

[1] So Illinois Univ, Dept Phys, Carbondale, IL 62901 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 26期

关键词：

Polycrystalline materials;

D O I：

10.1063/1.2752720

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetocaloric properties of polycrystalline Ni50Mn50-xInx (15 <= x <= 16) associated with the second order magnetic transition at the Curie temperature and the first order martensitic transition were studied using magnetization measurements. The refrigeration capacity and magnetic entropy change were found to depend on the In concentration and reach a maximum value of refrigeration capacity of 280 J/kg with a magnetic entropy change of -6.8 J/kg K at 318 K for a magnetic field change of 5 T. These values of the magnetocaloric parameters are comparable to that of the largest values reported near the second order transition of metallic magnets near room temperature. (c) 2007 American Institute of Physics.

引用

页数：3

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