Magnetic entropy change and large refrigerant capacity of Ce6Ni2Si3-type GdCoSiGe compound

被引：0

作者：

沈俊 ^{[1
]}

张虎 ^{[2
]}

吴剑峰 ^{[1
]}

机构：

[1] Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences

[2] State Key Laboratory for Magnetism,Institute of Physics,Chinese Academy of Sciences

来源：

Chinese Physics B | 2011年 / 20卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Gd6; Co1.67; Si2.5; Ge0.5; compound; magnetocaloric effect; refrigerant capacity;

D O I：

暂无

中图分类号：

O482.5 [磁学性质];

学科分类号：

摘要：

Magnetic entropy change (△S M) and refrigerant capacity (RC) of Ce 6 Ni 2 Si 3-type Gd 6 Co 1.67 Si 2.5 Ge 0.5 compounds have been investigated.The Gd 6 Co 1.67 Si 2.5 Ge 0.5 undergoes a reversible second-order phase transition at the Curie temperature T C=296 K.The high saturation magnetization leads to a large △S M and the maximal value of △S M is found to be 5.9 J/kg · K around T C for a field change of 0-5 T.A broad distribution of the △S M peak is observed and the full width at half maximum of the △S M peak is about 101 K under a magnetic field of 5 T.The large RC is found around T C and its value is 424 J/kg.

引用

页码：486 / 490

页数：5

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