ELECTRICAL CHARACTERIZATION OF PHASE-TRANSITION IN YTTRIUM DOPED BISMUTH OXIDE, BI1.55Y0.45O3

被引：11

作者：

DORDOR, PJ ^{[1
]}

TANAKA, J ^{[1
]}

WATANABE, A ^{[1
]}

机构：

[1] NATL INST RES INORGAN MAT,SAKURA,IBARAKI 305,JAPAN

来源：

SOLID STATE IONICS | 1987年 / 25卷 / 2-3期

关键词：

ELECTRIC MEASUREMENTS - Impedance - MICROSCOPIC EXAMINATION - Scanning Electron Microscopy - YTTRIUM COMPOUNDS - Ionic Conduction;

D O I：

10.1016/0167-2738(87)90118-4

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：

A polymorphic transition from hexagonal to cubic phase in Bi//1//. //5//5Y//0//. //4//5O//3 has been confirmed by complex impedance measurements. The transition was observed at about 975 K. SEM micrographs give evidence of the layered morphology of the low-temperature phase with hexagonal symmetry. Electrical measurements reveal that only bulk properties are modified by the transition. From a comparative analysis of the activation energies of bulk and grain boundaries, the existence of a segregated phase is suggested for the interpretation of the electrical transition mechanism.

引用

页码：177 / 181

页数：5

共 20 条

[1] STUDY OF SOLID ELECTROLYTE POLARIZATION BY A COMPLEX ADMITTANCE METHOD [J].