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

页数：6

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