OXYGEN-ION CONDUCTIVITY IN BABI4TI3MO14.5 (M=SC, IN AND GA)

被引：20

作者：

THOMAS, JK ^{[1
]}

KENDALL, KR ^{[1
]}

ZURLOYE, HC ^{[1
]}

机构：

[1] MIT,DEPT CHEM,CAMBRIDGE,MA 02139

来源：

SOLID STATE IONICS | 1994年 / 70卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0167-2738(94)90314-X

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：

BaBi4Ti3MO14.5 (M = Ga, In and Sc), compounds that consist of intergrowths between the Aurivillius phase Bi4Ti3O12 and brownmillerite-like layers of BaMO2.5 were synthesized and their oxygen ion conductivities were measured using complex impedance. All three materials display a discontinuity in Arrhenius plots of their ionic conductivity. A phase transition at this discontinuity is confirmed by differential thermal analysis and is consistent with an oxygen vacancy order-disorder transition. For BaBi4Ti3ScO14.5 there is an observed hysteresis for this phase transition. At 900-degrees-C the conductivities are 2.5 x 10(2)S.cm-1 for BaBi4Ti3ScO14.5 and 4.9 X 10(-2)S.cm-1 for BaBi4Ti3InO14.5 and 4.5 X 10(-2)S.cm-1 for BaBi4Ti3GaO14.5.

引用

页码：225 / 228

页数：4

共 19 条

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