Giant magnetic refrigeration capacity near room temperature in Ni40Co10Mn40Sn10 multifunctional alloy

被引：140
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.
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页数：5
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