A TEM and powder XRD study of new fluorite and perovskite-related phases in the CaO-ZrO2-Ta2O5 system

被引：7

作者：

Schmid, S ^{[1
]}

Lobo, C ^{[1
]}

Withers, RL ^{[1
]}

Thompson, JG ^{[1
]}

机构：

[1] AUSTRALIAN NATL UNIV,RES SCH CHEM,CANBERRA,ACT 0200,AUSTRALIA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1996年 / 127卷 / 01期

关键词：

D O I：

10.1006/jssc.1996.0359

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new long period, anion-deficient, fluorite-related superstructure phase (a=36.372(3), b=7.3590(5), and c=31.018(8) Angstrom) has been discovered in the CaO-ZrO2-Ta2O5 system at an experimentally determined composition of 0.304(4)TaO2.5. 0.347(4)ZrO2 . 0.349(4)/CaO. Electron diffraction suggests a space group symmetry for this phase of Fddd. It is furthermore shown that substantial amounts of Ta2O5 can be incorporated into CaZrO3 without apparently altering structure type. Extremely sluggish kinetics, however, make it difficult to determine the extent of this perovskite-related solid solution. (C) 1996 Academic Press. Inc.

引用

页码：82 / 86

页数：5

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