Magnetocaloric effect in antiferromagnetic Dy3Co compound

被引：0

作者：

Jun Shen

Jin-Liang Zhao

Feng-Xia Hu

Guang-Hui Rao

Guang-Yao Liu

Jian-Feng Wu

Yang-Xian Li

Ji-Rong Sun

Bao-Gen Shen

机构：

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

[2] Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics and Institute of Physics

[3] Hebei University of Technology,School of Material Science and Engineering

来源：

Applied Physics A | 2010年 / 99卷

关键词：

Magnetocaloric Effect; Magnetic Entropy Change; Physical Property Measurement System; Magnetic Refrigeration; Metamagnetic Transition;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Magnetic properties and magnetocaloric effects (MCEs) of the Dy3Co compound are studied. Two successive magnetic transitions: the antiferromagnetic (AFM)-to-AFM transition at TAF=29 K and the AFM-to-paramagnetic (PM) transition with increasing temperature at the Néel temperature TN=44 K are observed. Dy3Co undergoes a field-induced metamagnetic transition from the AFM to the ferromagnetic (FM) state below TN, giving rise to a large MCE. The maximal value of magnetic entropy change ΔSm is −13.9 J/kg K with a refrigerant capacity (RC) of 498 J/kg around TN for a field change of 0–5 T. A sign change of MCE in Dy3Co with magnetic field and temperature is observed near the critical field where the metamagnetic transition occurs.

引用

页码：853 / 858

页数：5