Inverse magnetocaloric effect in ferromagnetic Ni50Mn37+xSb13-x Heusler alloys

被引：168
|
作者：
Khan, Mahmud [1 ]
Ali, Naushad [1 ]
Stadler, Shane [1 ]
机构：
[1] So Illinois Univ, Dept Phys, Carbondale, IL 62901 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 05期
关键词：
D O I：
10.1063/1.2710779
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A study of the magnetocaloric effect (MCE) in the ferromagnetic Heusler alloys Ni50Mn37+xSb13-x (x=0,0.5,1) has been carried out through magnetization measurements. An inverse magnetocaloric effect was observed in the vicinity of the first order martensitic transition. A maximum positive magnetic entropy change of Delta S-m approximate to 19 J/kg K at approximately 297 K for a magnetic field change of 5 T was observed. It is demonstrated that the martensitic transformation temperature, and the corresponding Delta S-m, can be tuned through a slight variation in composition. (c) 2007 American Institute of Physics.
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