摘要
采用传统高温固相反应法制备了空位掺杂的系列样品Sr2-x□xFeMoO6(0≤x≤0.04),详细研究了其晶体结构。X射线粉末衍射结果表明该系列样品均为四方晶系,空间群为I4/m。晶胞参数随掺杂量有明显的变化趋势。空位的含量调控反位缺陷的浓度,Fe/Mo有序度从未掺杂时的91.02%降低到x=0.04时的61.26%。由Rietveld精修得到该系列样品详细的布拉格衍射峰的峰位信息。
The series of Sr2-x□xFeMoO6(0≤x≤0.04) were prepared by standard solid-state reaction.The crystal structures for the ordered double perovskite oxides are investigated.The GSAS refinements of X-ray powder diffraction show that all the samples are single phase and have the I4/m symmetry.Crystal parameters of the series have obvious change with vacancy doping.The anti-site defect in Sr2FeMoO6 was 91.02% and decrease to 61.26% for Sr1.96□0.4FeMoO6.The Bragg diffraction peak information was obtained from the GSAS refinements of X-ray powder diffraction.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第13期1863-1867,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(11074066)
河南师范大学博士科研启动金资助项目(01026500109)
河南省科技厅科技攻关资助项目(102102210186
102102210184)
关键词
X射线粉末衍射
晶体结构
空位掺杂
磁性材料
X-ray powder diffraction
crystal structure
vacancy doping
magnetic material