Magnetocaloric effect in Gd6Co1.67Si3 compound with a second-order phase transition

Magnetocaloric effect in Gd6Co1.67Si3 compound

with a second-order phase transition

Shen Jun; Li Yang-Xian; Dong Qiao-Yan; Wang Fang; Sun Ji-Rong

【期刊名称】《《中国物理：英文版》》 【年(卷),期】2008(017)006

【摘要】The magnetic properties and the magnetic entropy change ΔS have been investigated for Gd6Co1.67Si3 compounds with a second-order phase transition. The saturation moment at 5 K and the Curie temperature TC are 38.1μB and 298 K, respectively. The AS originates from a reversible second-order magnetic transition around TC and its value reaches 5.2J/kg.K for a magnetic field change from 0 to 5T. The refrigerant capacity (RC) of Gd6Co1.67Si3 are calculated by using the methods given in Refs.[12] and [21], respectively, for a field change of 0-5 T and its values are 310 and 440 J/kg, which is larger than those of some magnetocaloric materials with a first-order phase transition. 【总页数】4页(2268-2271)

【关键词】Gd6Co1.67Si3 compound; magnetic properties; magnetic entropy change

【作者】Shen Jun; Li Yang-Xian; Dong Qiao-Yan; Wang Fang; Sun Ji-Rong

【作者单位】School of Material Science and Engineering Hebei University of Technology Tianjin 300130 China; State Key Laboratory

for Magnetism Institute of Physics Chinese Academy of Sciences Beijing 100190 China 【正文语种】中文 【中图分类】O4 【相关文献】

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