Large magnetic entropy change above 300 K in La0.67Sr0.33Mn0.9Cr0.1O3

被引：105

作者：

Sun, Y ^{[1
]}

Tong, W ^{[1
]}

Zhang, YH ^{[1
]}

机构：

[1] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 232卷 / 03期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

magnetocaloric effect; entropy; refrigeration; perovskite; manganite;

D O I：

10.1016/S0304-8853(01)00263-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, we present a study of magnetocaloric effect in the Cr-doped colossal magnetoresistance material Lao(0.67)Sr(0.33)MnO(3). From the measurements of isothermal magnetization at different temperatures, we have discovered a large magnetic entropy change at Curie temperature (328 K) in Lao(0.67)Sr(0.33)Mn(0.9)Cr(0.1)O(3) ceramic sample. The magnetic entropy change under 6T magnetic field is similar to5.8 J/kg IC, which suggests the studied material a possible candidate as working substance in magnetic refrigeration above room temperature. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：205 / 208

页数：4

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