Magnetocaloric and barocaloric effects in a Gd5Si2Ge2 compound

doi:10.1088/1674-1056/21/3/037503

中国物理B ›› 2012, Vol. 21 ›› Issue (3): 37503-037503.doi: 10.1088/1674-1056/21/3/037503

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

邹君鼎

收稿日期:2011-09-09 修回日期:2011-10-12 出版日期:2012-02-15 发布日期:2012-02-15
通讯作者: 邹君鼎,zoujd@buaa.edu.cn E-mail:zoujd@buaa.edu.cn

Magnetocaloric and barocaloric effects in a Gd₅Si₂Ge₂ compound

Zou Jun-Ding(邹君鼎)^†

School of Materials Science and Engineering, Beihang University, Beijing 100191, China

Received:2011-09-09 Revised:2011-10-12 Online:2012-02-15 Published:2012-02-15
Contact: Zou Jun-Ding,zoujd@buaa.edu.cn E-mail:zoujd@buaa.edu.cn
Supported by:
Projected supported by the National Natural Science Foundation of China (Grant Nos. 50801015 and 50921003) and the Fundamental Research Funds for the Central Universities, China (Grant No. YWF-11-03-Q-003).

摘要/Abstract

Abstract: The first-order phase transition in Gd₅Si₂Ge₂ is sensitive to both magnetic field and pressure. It may indicate that the influences of the magnetic field and the pressure on the phase transition are virtually equivalent. Moreover, theoretical analyses reveal that the total entropy change is almost definite at a certain Curie temperature no matter whether the applied external field is a magnetic field or a pressure. The entropy change curve can be broadened dramatically under pressure, and the refrigerant capacity is improved from 284.7 J/kg to 447.0 J/kg.

Key words: magnetic phase transformation, magnetic properties, magnetocaloric effect

中图分类号: (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))

75.30.Kz

75.30.Sg (Magnetocaloric effect, magnetic cooling)

邹君鼎. [J]. 中国物理B, 2012, 21(3): 37503-037503.

Zou Jun-Ding(邹君鼎) . Magnetocaloric and barocaloric effects in a Gd₅Si₂Ge₂ compound[J]. Chin. Phys. B, 2012, 21(3): 37503-037503.

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Magnetocaloric and barocaloric effects in a Gd₅Si₂Ge₂ compound

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