Magnetocaloric and magnetoresistance properties of La2/3Sr1/3Mn1-xCoxO3 compounds

被引：10
|
作者：
Tetean, R. [1 ]
Deac, I. G. [1 ]
Burzo, E. [1 ]
Bezergheanu, A. [1 ]
机构：
[1] Univ Babes Bolyai, Fac Phys, RO-400084 Cluj Napoca, Romania
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2008年 / 320卷 / 14期
关键词：
magnetic oxides; colossal magnetoresistance; magnetocaloric effect;
D O I：
10.1016/j.jmmm.2008.02.100
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Structural, magnetic, magnetoresistance and magnetocaloric studies on La2/ 3Sr1/3Mn1-xCoxO3 compounds were reported. The samples were prepared by the conventional ceramic method. X- ray analysis showed the presence of one phase only, in all studied samples. From electrical resistance measurements it was found that the samples show large negative magnetoresistance behavior. The magnetic measurements were performed in a large temperature range, 4.2 -750K and external magnetic. elds up to 5 T. The adiabatic magnetic entropy changes, | Delta S|, were determined from magnetization data. Large magnetocaloric effect (MCE) has been obtained in all studied samples. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：E179 / E182
页数：4
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