SOLID-PHASE SYNTHESIS AND CHARACTERIZATION OF NEW BIMEVOX SERIES - BI(4)V(2-X)M(X)O(11) (M=SB-V, NB-V)

被引：81
|
作者：
JOUBERT, O
JOUANNEAUX, A
GANNE, M
VANNIER, RN
MAIRESSE, G
机构：
[1] INST MAT NANTES,F-44072 NANTES 03,FRANCE
[2] ENSC LILLE,CRISTALLOCHIM & PHYSICOCHIM SOLIDE LAB,F-59652 VILLENEUVE DASCQ,FRANCE
来源：
SOLID STATE IONICS | 1994年 / 73卷 / 3-4期
关键词：
BIMEVOX; IONIC CONDUCTIVITY; RIETVELD;
D O I：
10.1016/0167-2738(94)90049-3
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 new BIMEVOX series Bi(4)V(2-x)M(x)O(11) (M = Sb, Nb) have been investigated by X-ray powder diffraction, thermal analysis and ionic conductivity measurements. Structural phase transitions alpha<->beta and beta<->gamma occur as a function of composition. The structure of the tetragonal phases Bi4V1.5Sb0.5O11, Bi4VSbO11 and Bi4V1.5Nb0.5O11 have been refined by the Rietveld method. Structure and conductivity are compared in function of the substitution fate of vanadium. The gamma-type Bi4V1.7Sb0.3O11 phase exhibits the best O2--anionic conductivity at low temperature: 10(-2)S.cm(-1) at 590 K, associated with a low activation energy E(a)= 0.6 eV.
引用
收藏
页码：309 / 318
页数：10
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