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
收藏
页码：7337 / 7344
页数：8
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