AGING PHENOMENON OF STABILIZED BISMUTH OXIDES

被引：36

作者：

JIANG, N ^{[1
]}

BUCHANAN, RM ^{[1
]}

HENN, FEG ^{[1
]}

MARSHALL, AF ^{[1
]}

STEVENSON, DA ^{[1
]}

WACHSMAN, ED ^{[1
]}

机构：

[1] SRI INT,MAT RES CTR,MENLO PK,CA 94025

来源：

MATERIALS RESEARCH BULLETIN | 1994年 / 29卷 / 03期

基金：

美国国家科学基金会;

关键词：

BISMUTH; ERBIUM; YTTRIUM; OXIDES;

D O I：

10.1016/0025-5408(94)90020-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stabilized bismuth oxides exhibit a decay in conductivity when annealed at temperatures below 600-degrees-C. We refer to this phenomenon as aging and it is distinct from a conventional crystallographic phase transformation. This phenomenon is revealed by an endotherm from DSC thermal analysis and results in the formation of a superstructure observable by TEM diffraction patterns, yet no change in structure is observable by XRD. Since oxygen vacancies are the mobile defects responsible for ionic conductivity, we attribute the aging process to the ordering of oxygen vacancies by an order-disorder transition below approximately 600-degrees-C.

引用

页码：247 / 254

页数：8

共 15 条

[1] PHASE-STABILITY, PHASE-TRANSFORMATION KINETICS, AND CONDUCTIVITY OF Y2O3-BI2O3 SOLID ELECTROLYTES CONTAINING ALIOVALENT DOPANTS [J].