Crystal structures and reference x-ray powder diffraction patterns of Sr4-xCaxPb2O8 (x=1,2,3)

被引：2
|
作者：
Wong-Ng, W [1 ]
Kaduk, JA
Greenwood, W
机构：
[1] NIST, Div Ceram, Gaithersburg, MD 20899 USA
[2] Amoco Corp, Naperville, IL 60566 USA
[3] Univ Maryland, Dept Geol, College Pk, MD 20742 USA
来源：
POWDER DIFFRACTION | 1998年 / 13卷 / 04期
关键词：
D O I：
10.1017/S0885715600010162
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The crystal structure of the solid solution alkaline earth plumbate phase Sr4-xCaxPb2O8 was investigated using the X-ray Rietveld technique for x = 1, 2, and 3. The lattice parameters a, b, c, and V were found to decrease linearly as the Sr at site 4h was replaced by Ca. The structure features chains of edge-sharing PbO6 octahedra, linked by seven-coordinated (Ca/Sr)-O monocapped trigonal prisms. The structure is similar to that of Pb3O4, which can be reformulated as (Pb2PbO4)-Pb-II-O-IV. X-ray diffraction patterns for the solid solution members SrCa3Pb2O8, Sr2Ca2Pb2O8, and Sr3CaPb2O8 were prepared for inclusion in the Powder Diffraction File. (C) 1998 International Centre for Diffraction Data. [S0885-7156(98)00402-3].
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页码：232 / 240
页数：9
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