Charge and mass transport in ceramic TiO2

被引：27

作者：

Radecka, M

Rekas, M ^{[1
]}

机构：

[1] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

[2] Stanislaw Staszic Univ Min & Met, Fac Mat Sci & Ceram, PL-30059 Krakow, Poland

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2002年 / 22卷 / 12期

关键词：

diffusion; electrical conductivity; energy band gap; TiO2;

D O I：

10.1016/S0955-2219(01)00519-2

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper is a report on the electrical conductivity properties of ceramic TiO2 materials sintered at different temperatures within the range of 1200-1400degreesC (1473-1673 K). The measurements were taken in the temperature range 650-1080degreesC (923-1353 K) and oxygen partial pressure, p(O-2), 10-10(5) Pa. The determined values of the p(O-2) exponent differ from those predicted by defect disorder models. This difference allows us to evaluate both electronic and ionic components of the electrical conductivity. Using the Nerst-Einstein equation, the determined ionic component was verified against diffusion data in available literature. The energy gap was determined from both optical and electrical studies. (C) 2002 Published by Elsevier Science Ltd.

引用

页码：2001 / 2012

页数：12

共 44 条

[1] DIFFUSION OF TITANIUM IN SLIGHTLY REDUCED RUTILE [J].