The magnetocaloric effect in high-spin paramagnetic rare-earth fluorites

被引：15
作者：
Fernandez, Antonio
Bohigas, Xavier
Tejada, Javier
Sulyanova, Elena A.
Buchinskaya, Irina I.
Sobolev, Boris P.
机构：
[1] Univ Politecn Catalunya, Dept Fis & Engn Nucl, E-08028 Barcelona, Spain
[2] Univ Barcelona, Dept Fis Fonamental, E-08028 Barcelona, Spain
[3] Russian Acad Sci, Shubnikov Inst Crystallog, Moscow 119333, Russia
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2007年 / 105卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
fluorites; rare-earth based materials; magnetocaloric effect; magnetic refrigeration;
D O I：
10.1016/j.matchemphys.2007.04.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic properties of single crystals of non-stoichiometric fluorides Cd0.90R0.10F2.10 (R=Gd, Tb, Dy and Ho) with the fluorite-type structure have been studied for the first time. Isothermal magnetization measurements were made at different temperatures. The magnetic entropy, the magnetic moment and the Curie temperature of these materials were investigated in a temperature range of 5-300 K. The samples are paramagnetic following the Curie-Weiss law in a wide range of temperatures. The results show quite a large magnetic entropy variation was achieved, suggesting a possible candidate for a magnetic refrigerator at temperatures below 20 K. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：62 / 66
页数：5
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