Magnetocaloric properties in the Cr-doped La0.7Sr0.3MnO3 manganites

被引：92

作者：

Kallel, Nabil ^{[1
]}

Kallel, Sami ^{[1
]}

Hagaza, Ahmed ^{[1
]}

Oumezzine, Mohamed ^{[1
]}

机构：

[1] Fac Sci Monastir, Dept Phys, Lab Physicochim Mat, Monastir 5019, Tunisia

来源：

PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 02期

关键词：

Perovskites; Magnetic materials; Magnetocaloric effect; Magnetic refrigeration; MAGNETIC-ENTROPY CHANGE; MAGNETORESISTANCE; VACANCIES; MN;

D O I：

10.1016/j.physb.2008.10.049

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Single-phase polycrystalline samples of La0.7Sr0.3Mn1-xCrxO3 with nominal composition of x = 0.00, 0.20, 0.40 and 0.50 were prepared by a conventional solid-state reaction method in air. Investigations of magnetization were carried out in the temperature range 5-400 K and magnetic field range 0-8 T. It was found that the Curie temperature T-C decreases with increasing x and the maximum magnetic entropy change (-Delta S-M) for x = 0.20 is similar to 1.203 and similar to 2.653 J/kg K, respectively for 2 and 6 T magnetic field near the temperature of 280 K. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：285 / 288

页数：4

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