Influence of Al substitution on the magnetocaloric and magnetoresistance effects of Ni46Co4Mn38Sb12-xAlx(0 ≤ x ≤ 2) alloys

被引：9
|
作者：
Luo, Feng [1 ,2 ]
He, Xiong [2 ]
Rauf, Sajid [1 ]
Yang, Changping [1 ]
Sun, Zhigang [2 ]
Tayyab, Zuhra [1 ]
Wang, Ruilong [1 ]
Liang, Shiheng [1 ]
Zhang, Kongbin [2 ]
Liu, Guoqiang [2 ]
Xiao, Haibo [1 ]
Marchenkov, V. V. [3 ]
机构：
[1] Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Peoples R China
[2] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
[3] Russian Acad Sci, Inst Met Phys, Ural Branch, Ekaterinburg 62990, Russia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 502卷 / 502期
基金：
中国国家自然科学基金;
关键词：
Heulser alloy; Martensitic transformation; Magnetocaloric effects; Magnetoresistance; NiMnSb alloy; NI-MN-GA; ROOM-TEMPERATURE; MAGNETIC REFRIGERATION; GIANT;
D O I：
10.1016/j.jmmm.2019.166277
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ni-Mn-Sb Heusler alloys exhibit a large magnetocaloric effect due to the magnetic structure coupling and are potential candidate for practical application. In this work, the effects of Al substitution for Sb on the magnetocaloric and magnetoresistance properties are investigated in Ni46Co4Mn38Sb12-xAlx(0 <= x <= 2) serial alloys. The results demonstrate that the critical temperature of martensitic transformation gradually increases with increasing Al concentration while the temperature interval between the beginning and ending of martensitic transition decreases till x = 0.5, then increases with further increasing of Al, resulting in the similar nonmonotonic behavior on both magnetic entropy and magnetoresistance for Ni46Co4Mn38Sb12-xAlx(0 <= x <= 2) series. Maximum value of 17.8 J/kg K and - 25.8% at 30 kOe is obtained respectively for magnetic entropy and magnetoresistance in Ni46Co4Mn38Sb12-xAl0.5, for the greatly narrowed temperature interval of phase transition after Al substitution
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页数：8
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