Structural, magnetic and magnetocaloric study of La0.7-xEuxSr0.3MnO3 (x=0.1, 0.2 and 0.3) manganites

被引：32

作者：

Bouderbala, A. ^{[1
]}

Makni-Chakroun, J. ^{[1
]}

Cheikhrouhou-Koubaa, W. ^{[1
]}

Koubaa, M. ^{[1
]}

Cheikhrouhou, A. ^{[1
,2
]}

Nowak, S. ^{[3
]}

Ammar-Merah, S. ^{[3
]}

机构：

[1] Sfax Univ, Fac Sci Sfax, Lab Phys Mat, Sfax 3000, Tunisia

[2] Sfax Technopk, Res Ctr Comp Multimedia & Digital Data Proc, Sakiet Ezzit, Tunisia

[3] Univ Paris Diderot, ITODYS, CNRS, UMR 7086, F-75205 Paris, France

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 06期

关键词：

X-ray; Manganites; Magnetocaloric effect; COLOSSAL MAGNETORESISTANCE; TRANSPORT; TEMPERATURE; TRANSITION; SR; BEHAVIOR; CA; EU;

D O I：

10.1016/j.ceramint.2015.02.034

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper reports the structural, magnetic and magnetocaloric properties of La0.7-xEuxSr0.3MnO3 (x=0.1, 0.2 and 0.3) polycrystalline manganites elaborated using the solid-state reaction at high temperatures. The X-ray powder diffraction shows that all the prepared compounds are single phase. La0.6Eu0.1Sr0.3MnO3 is crystallized in the rhombohedral symmetry, whereas a structural transition towards orthorhombic system is observed for x >= 0.2. Eu doping was found to induce a decrease of the Curie temperature Tc from 343 K (x=0.1) to 272 K (x=0.3). All compounds undergo a large magnetocaloric effect and have consequently potential applications in magnetic refrigeration domain around room temperature. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：7337 / 7344

页数：8

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