Structure and electrical behaviour in air of TiO2-doped stabilized tetragonal zirconia ceramics

Authors
Capel, F Moure, C Duran, P Elipe, ARG Caballero, A
Citation
F. Capel et al., Structure and electrical behaviour in air of TiO2-doped stabilized tetragonal zirconia ceramics, J EUR CERAM, 19(6-7), 1999, pp. 765-768
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN journal
09552219 → ACNP
Volume
19
Issue
6-7
Year of publication
1999
Pages
765 - 768
Database
ISI
SICI code
0955-2219(1999)19:6-7<765:SAEBIA>2.0.ZU;2-P
Abstract
The data obtained from X-ray absorption (XANES and EXAFS) were used to prov ide information on the environment of Ti atoms in the TiO2-doped stabilized tetragonal zirconia solid solutions. The electrical conductivity of the Ti -YTZP ceramics decreases with increasing TiO2 content. From the EXAFS resul ts, i.e. Ti-O and Ti-Ti distances, the decrease in conductivity was attribu ted to the formation of two kinds of cation-oxygen vacancy associations wit h different diffusion dynamics, leading to a decrease in the global concent ration of moving oxygen vacancies. (C) 1999 Elsevier Science Limited. All r ights reserved.