Low field induced giant magnetocaloric effect in TmGa compound

被引：90
|
作者：
Mo, Zhao-Jun [1 ,2 ]
Shen, Jun [1 ]
Yan, Li-Qin [3 ,4 ]
Tang, Cheng-Chun [2 ]
Lin, Jing [2 ]
Wu, Jian-Feng [1 ]
Sun, Ji-Rong [3 ,4 ]
Wang, Li-Chen [3 ,4 ]
Zheng, Xin-Qi [3 ,4 ]
Shen, Bao-Gen [3 ,4 ]
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing, Peoples R China
[2] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin, Peoples R China
[3] Chinese Acad Sci, State Key Lab Magnetism, Beijing Natl Lab Condensed Matter, Beijing, Peoples R China
[4] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 05期
基金：
中国国家自然科学基金;
关键词：
MAGNETIC ENTROPY CHANGE; ROOM-TEMPERATURE; MAGNETORESISTANCE; TRANSITION;
D O I：
10.1063/1.4816729
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic properties and magnetocaloric effect in TmGa compound are investigated. TmGa exhibits two successive magnetic transitions: ferromagnetic-antiferromagnetic at T-FA = 12 K and antiferromagnetic-paramagnetic transition at T-N = 15 K. Under field changes of 1 and 2 T, giant reversible values of magnetic entropy change (12.9 and 20.6 J/kg K) and large values of refrigerant capacity (69 and 149 J/kg) are observed, respectively. Additionally, the maximal values of adiabatic temperature change are 3.2 and 5 K for field changes of 1 and 2 T, respectively. The TmGa compound with excellent magnetocaloric effect is expected to have effective applications in low temperature magnetic refrigeration. (C) 2013 AIP Publishing LLC.
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页数：4
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