STRUCTURAL REFINEMENT USING HIGH-RESOLUTION POWDER X-RAY-DIFFRACTION DATA OF CA0.5TI2P3O12, A LOW-THERMAL-EXPANSION MATERIAL

被引：47

作者：

SENBHAGARAMAN, S ^{[1
]}

ROW, TNG ^{[1
]}

UMARJI, AM ^{[1
]}

机构：

[1] INDIAN INST SCI,SOLID STATE & STRUCT CHEM UNIT,BANGALORE 560012,KARNATAKA,INDIA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1993年 / 3卷 / 03期

关键词：

RIETVELD METHOD; THERMAL EXPANSION; TITANIUM PHOSPHATE;

D O I：

10.1039/jm9930300309

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structures of Ca0.5Ti2P3O12 and Sr0.5Ti2P3O12, low-thermal-expansion materials, have been refined by the Rietveld method using high-resolution powder X-ray diffraction (XRD) data. The assignment of space group R3BAR to NASICON-type compounds containing divalent cations is confirmed. P-31 magic-angle spinning nuclear magnetic resonance (MASNMR) data are presented as supporting data. A comparison of changes in the polyhedral network resulting from the cation distribution, is made with NaTi2O3O12 and Nb2P3O12. Factors that may govern thermal expansion in this family of compounds are discussed.

引用

页码：309 / 314

页数：6

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