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

被引：33

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

共 32 条

[1] Variational mean-field approach to the double-exchange model -: art. no. 054411 [J].

Alonso, JL ;

Fernández, LA ;

Guinea, F ;

Laliena, V ;

Martín-Mayor, V .

PHYSICAL REVIEW B, 2001, 63 (05)

[2] Magnetocaloric effect in Er- and Eu-substituted ferromagnetic La-Sr manganites [J].

Amaral, JS ;

Reis, MS ;

Amaral, VS ;

Mendonça, TM ;

Araújo, JP ;

Sá, MA ;

Tavares, PB ;

Vieira, JM .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2005, 290 :686-689

[3] Magnetoelastic coupling influence on the magnetocaloric effect in ferromagnetic materials [J].

Amaral, VS ;

Amaral, JS .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 :2104-2105

[4] Above room temperature magnetic transition and magnetocaloric effect in La0.66Sr0.34MnO3 [J].

Anwar, M. S. ;

Kumar, Shalendra ;

Ahmed, Faheem ;

Arshi, Nishat ;

Kim, G. W. ;

Koo, Bon Heun .

JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2012, 60 (10) :1587-1592

[5]

Bogdan C., 2004, THESIS U PARIS SUD P

[6] Temperature dependent changes of the Mn 3d and 4p bands near Tc in colossal magnetoresistance systems:: XANES study of La1-xCaxMnO3 [J].

Bridges, F ;

Booth, CH ;

Kwei, GH ;

Neumeier, JJ ;

Sawatzky, GA .

PHYSICAL REVIEW B, 2000, 61 (14) :R9237-R9240

[7] A GENERALIZATION OF THE INOUE-SHIMIZU MODEL [J].

BROMMER, PE .

PHYSICA B, 1989, 154 (02) :197-202

[8] Characterization of transport and magnetic properties in thin film La0.67(CaxSr1-x)0.33 MnO3 mixtures [J].

Broussard, PR ;

Qadri, SB ;

Browning, VM ;

Cestone, VC .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (09) :6563-6566

[9]

Buschow K. H. J., 2003, Physics of Magnetism and Magnetic Materials

[10] Metamagnetism, giant magnetoresistance and magnetocaloric effects in RCO2-based compounds in the vicinity of the Curie temperature [J].

Duc, NH ;

Anh, DTK ;

Brommer, PE .

PHYSICA B-CONDENSED MATTER, 2002, 319 (1-4) :1-8

← 1 2 3 4 →