Magnetocaloric effects near room-temperature of Ag-doped La0.833K0.167MnO3 composites

被引：14

作者：

Jian, Wu ^{[1
]}

机构：

[1] Hohai Univ, Coll Sci, Nanjing 210098, Jiangsu, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 476卷 / 1-2期

关键词：

Entropy; Perovskite; Magnetocaloric materials; MAGNETIC REFRIGERANT; THIN-FILMS; TRANSITION;

D O I：

10.1016/j.jallcom.2008.09.118

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A detailed investigation of the thermodynamic properties of Ag-doped La0.833K0.167MnO3 Composites for possible applications in magnetic refrigeration is presented. The adiabatic magnetic entropy change vertical bar Delta S vertical bar is determined fora magnetic field change from 0 to I T using magnetization data. The Curie temperature (T-C) increases with the metal Ag added and shifts to room temperature. A peak behavior of the entropy change is observed with a maximum absolute value 1.86 J/kg K near room temperature for Ag-doped sample. It is shown that the large magnetic entropy change associated with the ferromagnetic-paramagnetic transition. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：859 / 863

页数：5

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