Giant magnetic refrigeration capacity near room temperature in Ni40Co10Mn40Sn10 multifunctional alloy

被引：142

作者：

Huang, L. ^{[1
,2
]}

Cong, D. Y. ^{[1
]}

Suo, H. L. ^{[3
]}

Wang, Y. D. ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[3] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 13期

基金：

中国国家自然科学基金;

关键词：

PHASE-TRANSFORMATION; ENTROPY CHANGE; HEUSLER ALLOYS; TRANSITION; NI50MN34IN16;

D O I：

10.1063/1.4870771

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a giant effective magnetic refrigeration capacity in a Ni40Co10Mn40Sn10 multifunctional alloy. With a large magnetization difference between austenite and martensite, this alloy shows a strong magnetic field dependence of transformation temperatures. Complete magnetic-field-induced structural transformation and a considerable magnetic entropy change are observed in a broad operating temperature window of 33 K near room temperature. Consequently, an effective magnetic refrigeration capacity of 251 J/kg for 5 T is achieved, which is the largest value for Ni-Mn-based Heusler alloys and comparable to that of the high-performance Gd-Si-Ge and La-Fe-Si magnetocaloric materials. Incorporating the advantages of low cost and non-toxicity, this alloy shows very promising prospects for room-temperature magnetic refrigeration. (C) 2014 AIP Publishing LLC.

引用

页数：5

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