Synthesis, structure and magnetic properties of Sr2Fe1-xGaxMoO6 (0 ≤ x ≤ 0.6) double perovskites

被引：3
|
作者：
Azad, Abul K. [1 ]
Khan, Abdullah [2 ]
Eriksson, Sten-G [3 ]
Irvine, John T. S. [1 ]
机构：
[1] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland
[2] Univ Balochistan, Dept Chem, Balochistan, Pakistan
[3] Chalmers, Dept Environm Inorgan Chem, SE-41296 Gothenburg, Sweden
来源：
MATERIALS RESEARCH BULLETIN | 2009年 / 44卷 / 12期
基金：
英国工程与自然科学研究理事会;
关键词：
Oxides; Chemical synthesis; Neutron diffraction; Crystal structure; Magnetic properties; ROOM-TEMPERATURE; CURIE-TEMPERATURE; MAGNETORESISTANCE; SR2FEMOO6; BA;
D O I：
10.1016/j.materresbull.2009.08.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Polycrystalline Sr2Fe1-xGaxMoO6 (0 <= x <= 0.6) materials have been synthesized by solid state reaction method and studied by neutron powder diffraction (NPD) and magnetization measurements. Rietveld analysis of the temperature dependent NPD data shows that the compounds crystallize in the tetragonal symmetry in the space group 14/m. The anti-site (AS) defects concentration increases with Ga doping, giving rise to highly B-site disordered materials. Ga doping at the Fe-site decreases the cell volume. The evolution of bond lengths and the cation oxidation states was determined from the Rietveld refinement data. The saturation magnetization and Curie temperature decreased with the increasing Ga content in the samples. Low temperature neutron diffraction data analysis and magnetization measurements confirm the magnetic interaction as ferrimagnetic in the sample. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2181 / 2185
页数：5
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