Large reversible magnetocaloric effect in a Ni-Co-Mn-In magnetic shape memory alloy

被引：101
作者：
Huang, L. [1 ,2 ]
Cong, D. Y. [2 ]
Ma, L. [3 ]
Nie, Z. H. [1 ]
Wang, Z. L. [1 ]
Suo, H. L. [3 ]
Ren, Y. [4 ]
Wang, Y. D. [2 ]
机构：
[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, 30 Xueyuan Rd, Beijing 100083, Peoples R China
[3] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
[4] Argonne Natl Lab, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA
来源：
APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 03期
基金：
中国国家自然科学基金;
关键词：
PHASE; GD-5(SI2GE2); TRANSITIONS;
D O I：
10.1063/1.4940441
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Reversibility of the magnetocaloric effect in materials with first-order magnetostructural transformation is of vital significance for practical magnetic refrigeration applications. Here, we report a large reversible magnetocaloric effect in a Ni49.8Co1.2Mn33.5In15.5 magnetic shape memory alloy. A large reversible magnetic entropy change of 14.6 J/(kg K) and a broad operating temperature window of 18K under 5 T were simultaneously achieved, correlated with the low thermal hysteresis (similar to 8K) and large magnetic-field-induced shift of transformation temperatures (4.9K/T) that lead to a narrow magnetic hysteresis (1.1 T) and small average magnetic hysteresis loss (48.4 J/ kg under 5 T) as well. Furthermore, a large reversible effective refrigeration capacity (76.6 J/ kg under 5 T) was obtained, as a result of the large reversible magnetic entropy change, broad operating temperature window, and small magnetic hysteresis loss. The large reversible magnetic entropy change and large reversible effective refrigeration capacity are important for improving the magnetocaloric performance, and the small magnetic hysteresis loss is beneficial to reducing energy dissipation during magnetic field cycle in potential applications. (C) 2016 AIP Publishing LLC.
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页数：5
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