Large conventional and inverse magnetocaloric effects in RE2Ga2Mg (RE = Tm, Er, Ho) compounds

被引：7
|
作者：
Wang, Zhaoxing [1 ,2 ]
Reimann, Maximilian Kai [3 ]
Chen, Wang [1 ,2 ]
Zhang, Yikun [1 ,2 ]
Poettgen, Rainer [3 ]
机构：
[1] Hangzhou Dianzi Univ, Sch Elect & Informat, Hangzhou 310012, Peoples R China
[2] Hangzhou Dianzi Univ, Key Lab Novel Mat Sensor Zhejiang Prov, Hangzhou 310012, Peoples R China
[3] Univ Munster, Inst Anorgan & Analyt Chem, Corrensstr 30, D-48149 Munster, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2024年 / 589卷
基金：
中国国家自然科学基金;
关键词：
Magnetic cooling; Rare earths; Magnetocaloric effect; RE2Ga2Mg; GROUND-STATE; TRANSITION; ACHIEVEMENT; CHEMISTRY;
D O I：
10.1016/j.jmmm.2023.171536
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Mo2FeB2-type compounds RE2Ga2Mg (RE = Tm, Er, Ho) (space group P4/mbm) exhibit a large magnetocaloric (MC) effect which makes them promising for use in cryogenic magnetic cooling applications. They exhibit low temperature metamagnetic nature below their Ne ' el temperatures of 6.8, 11.7 and 18.4 K for Tm2Ga2Mg, Er2Ga2Mg and Ho2Ga2Mg, respectively. The magnetic entropy change, the temperature-averaged entropy change (3 K-lift), and the relative cooling power under a magnetic field change of 0-7 T are 15.6, 15.4 J/kgK and 275.8 J/kg for Tm2Ga2Mg; 13.2, 13.0 J/kgK and 268.0 J/kg for Er2Ga2Mg; as well as 9.1, 9.0 J/kgK and 223.0 J/kg for Ho2Ga2Mg, respectively.
引用
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页数：6
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