INFLUENCE OF ADDITIVES ON THE ELECTRICAL-PROPERTIES OF DENSE SNO2-BASED CERAMICS

被引：25

作者：

LAS, WC ^{[1
]}

DOLET, N ^{[1
]}

DORDOR, P ^{[1
]}

BONNET, JP ^{[1
]}

机构：

[1] CNRS, CHIM SOLIDE LAB, F-33405 TALENCE, FRANCE

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 74卷 / 10期

关键词：

D O I：

10.1063/1.355188

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Highly densified 0.99 SnO2-0.01 CuO-based ceramics with antimony, tantalum, or niobium oxides as additives have been prepared. Samples have been characterized by dc conductivity and complex impedance spectroscopy as a function of temperature and by current density as a function of electric field. Microstructures have been analyzed by scanning electron microscopy, electron microprobe, and Auger spectroscopy. The electrical properties of Ta- and Nb-doped ceramics are grain boundary controlled at least at low temperature. Sb-doped materials show a different electrical behavior due to the presence of a segregation layer of antimony which inhibits grain boundary effects.

引用

页码：6191 / 6196

页数：6

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