Synthesis and characterization of La(Cr,Fe,Mn)O3 nanoparticles obtained by co-precipitation method

被引：28
|
作者：
Fabian, F. A. [1 ]
Pedra, P. P. [1 ]
Filho, J. L. S. [1 ]
Duque, J. G. S. [2 ]
Meneses, C. T. [2 ]
机构：
[1] Univ Fed Sergipe, Dept Fis, BR-49100000 Sao Cristovao, SE, Brazil
[2] Univ Fed Sergipe, Dept Fis, BR-49500000 Itabaiana, SE, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 379卷
关键词：
Synthesis; Perovskites; Magnetic properties; X-ray diffraction; MAGNETIC-PROPERTIES;
D O I：
10.1016/j.jmmm.2014.12.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic and structural properties have been investigated in La(Cr,Fe,Mn)O-3 nanoparticles obtained by co-precipitation method. The X-ray diffraction measurements allied to Rietveld method confirm the formation of LaCrO3, LaFeO3 and LaMnO3 nanoparticles with crystal structure orthorhombic (Pbnm), orthorhombic (Prima) and rhombohedral (R-3c), respectively. We also verified an decreasing in the average crystallite size from 73 to 26 nm, depending of the transition metal. The magnetic measurements reveal an antiferromagnetic behavior for the LaCrO3 sample with T-N similar to 289 K, and a weak ferromagnetic ordering for the LaMnO3 sample with T-c similar to 200 K. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：80 / 83
页数：4
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