BISMUTH(III)-BASED AND ANTIMONY(V)-BASED CERAMICS WITH ANION-DEFICIENT FLUORITE STRUCTURE

被引：14

作者：

CHAMPARNAUDMESJARD, JC ^{[1
]}

MANIER, M ^{[1
]}

FRIT, B ^{[1
]}

TAIRI, A ^{[1
]}

机构：

[1] UNIV HASSAN II,FAC SCI,DEPT CHIM,CASABLANCA,MOROCCO

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1992年 / 188卷 / 1-2期

关键词：

D O I：

10.1016/0925-8388(92)90669-Z

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：

Original non-stoichiometric oxides with the formula M2-2xBi3xSb2-xO7 (M = Cd, Zn) have been found in the Bi2O3-Sb2O5-MO (M = Cd, Zn) systems. These phases belong to the pyrochlore family. Niobium- and lanthanum-substituted MBi1.5Sb1.5O7 (M = Cd, Zn) so id solutions have been synthesized by solid state reaction. The composition ranges and the evolution of the lattice parameters as a function of the ionic radii of the substituting elements have been determined. The low frequency dielectric properties have been evaluated between room temperature and 473 K on sintered ceramic samples. Their variations are discussed in terms of the electronic structures of the involved cations and the relative polarisabilities of both the NbO6 and SbO6 octahedra.

引用

页码：174 / 178

页数：5

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