Effect of Sb-doping on martensitic transformation and magnetocaloric effect in Mn-rich Mn50Ni40Sn10-xSbx(x=1,2,3,and 4) alloys

被引：0

作者：

Ishfaq Ahmad Shah ^{[1
]}

Najam ul Hassan ^{[1
]}

刘俊 ^{[1
]}

龚元元 ^{[1
]}

徐桂舟 ^{[1
]}

徐锋 ^{[1
]}

机构：

[1] Jiangsu Key Laboratory of Advanced Micro & Nano Materials and Technology,School of Materials Science and Engineering,Nanjing University of Science and Technology

来源：

Chinese Physics B | 2017年 / 26卷 / 01期

基金：

中国国家自然科学基金; 中央高校基本科研业务费专项资金资助; 中国博士后科学基金;

关键词：

Mn-rich Heusler alloys; martensitic transformation; magnetocaloric effect; magnetic entropy change;

D O I：

暂无

中图分类号：

O482.5 [磁学性质];

学科分类号：

070205 ; 0805 ; 080502 ; 0809 ;

摘要：

We investigate the influence of Sb-doping on the martensitic transformation and magnetocaloric effect in Mn50Ni40Sn10-xSbx(x = 1, 2, 3, and 4) alloys. All the prepared samples exhibit a B2-type structure with the space group F m3 m at room temperature. The substitution of Sb increases the valence electron concentration and decreases the unit cell volume. As a result, the magnetostructural transformation shifts rapidly towards higher temperatures as x increases.The changes in magnetic entropy under different magnetic field variations are explored around this transformation. The isothermal magnetization curves exhibit typical metamagnetic behavior, indicating that the magnetostructural transformation can be induced by a magnetic field. The tunable martensitic transformation and magnetic entropy changes suggest that Mn50Ni40Sn10-xSbxalloys are attractive candidates for applications in solid-state refrigeration.

引用

页码：448 / 452

页数：5

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