Crystal structure of Sr2MgWO6 and Ba2SrWO6 determined by powder X-ray diffraction

被引：12

作者：

Khalyavin, DD ^{[1
]}

Senos, AMR ^{[1
]}

Mantas, PQ ^{[1
]}

机构：

[1] Univ Aveiro, CICECO, Dept Ceram & Glass Engn, P-3810193 Aveiro, Portugal

来源：

POWDER DIFFRACTION | 2004年 / 19卷 / 03期

关键词：

powder diffraction; double perovskite; microwave materials; Sr2MgWO6; Ba2SrWO6;

D O I：

10.1154/1.1757449

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The crystal structures of Sr2MgWO6 and Ba2SrWO6 compounds, studied by powder X-ray diffraction, were found to be distorted perovskites with a complete NaCl type ordering between Mg2+/W6+ and Sr2+/W6+ ions, respectively. The unit cells are characterized by the tetragonal (space group I4/m; a(0)a(0)a(-)) symmetry, with the parameters a=5.5849(10) A and c =7.9455(10) angstrom, for Sr2MgWO6 and triclinic (space group F-1; a(-)b(-)b(-)) symmetry, with the parameters a=8.5409(10) angstrom, b=c=8.5860(10) angstrom, alpha=89.35(1)degrees and beta=gamma=90.31(1)degrees, for Ba2SrWO6. (c) 2004 International Centre for Diffraction Data.

引用

页码：280 / 283

页数：4

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