Magnetic properties and magnetocaloric response of mixed valence La2/3Ba1/3Mn1-xFexO3 manganites

被引：11
|
作者：
Betancourt, I. [1 ]
Lopez Maldonado, L. [2 ]
Elizalde Galindo, J. T. [2 ]
机构：
[1] Univ Nacl Autonoma Mexico, Inst Invest Mat, Dept Mat Met & Ceram, Mexico City 04510, DF, Mexico
[2] Univ Autonoma Ciudad Juarez, Inst Ingn & Tecnol, Ciudad Juarez 32310, Mexico
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 401卷
关键词：
Mixed valence manganites; Magnetocaloric effect; Curie temperature; Magnetic entropy; GIANT MAGNETORESISTANCE; TRANSPORT-PROPERTIES; PEROVSKITE;
D O I：
10.1016/j.jmmm.2015.10.137
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Polycrystalline manganites of composition La(2/3)Ba(1/3)Mn(1-x)FexO(3) (x=0.0-0.10) were obtained by the Pechini method. Magnetic properties exhibited a marked dependence with Fe content, showing significant reductions for the saturation magnetization and the Curie temperature. The magnetocaloric effect was quantified for all the samples by means of the magnetic entropy variations, which showed a maximum of 1.46 J/kgK for Fe content of x=0.025. Results were interpreted on the basis of a deleterious effect on the double exchange interaction provoked by the presence of Fe3+ ions within the crystal structure. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：812 / 815
页数：4
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