STRUCTURAL AND MAGNETIC PROPERTIES OF Sr2FeMoO6 OBTAINED AT LOW TEMPERATURES

被引：0
|
作者：
Bartha, C. [1 ]
Plapcianu, C. [1 ]
Crisan, A. [1 ]
Enculescu, M. [1 ]
Leca, A. [1 ]
机构：
[1] Natl Inst Mat Phys, 405A Atomistilor, Magurele Ilfov 077125, Romania
来源：
DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES | 2016年 / 11卷 / 03期
关键词：
Double-perovskites; Low temperature synthesis; Local interactions; Ferromagnetic couplings; ORDERED SR2FEMOO6; MAGNETORESISTANCE;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The double-perovskite Sr2FeMoO6 has been obtained by solid state method at low temperature (1060 degrees C) and a very short time of synthesis (up to 4h). Both, X-ray diffraction and scanning electron microscopy (SEM) confirmed the formation of Sr2FeMoO6 oxide with grain sizes around 160 mm, and a small amount of SrMoO4 as an impurity. Mossbauer spectroscopy revealed a mixed site population with Fe and Mo ions generating a structure type with population inversion. This structure has a critical influence on the magnetic properties, as confirmed by the magnetization and TC values, i.e 3.56 mu(B)/f.u and 415 K, respectively. The Sr2FeMoO6 behavior was interpreted in terms of ferrimagnetic couplings generated by the various distributions of local interactions between Fe and Mo neighbors while comparing the ideal structure should show antiferromagnetic coupling between the two sublattices.
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页码：773 / 780
页数：8
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