High-temperature X-ray diffraction study of the lanthanum aluminium titanate perovskite La0.683Ti0.95Al0.05O3

Authors
Yashima, M Ali, R Yoshioka, H
Citation
M. Yashima et al., High-temperature X-ray diffraction study of the lanthanum aluminium titanate perovskite La0.683Ti0.95Al0.05O3, SOL ST ION, 128(1-4), 2000, pp. 105-110
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
128
Issue
1-4
Year of publication
2000
Pages
105 - 110
Database
ISI
SICI code
0167-2738(200002)128:1-4<105:HXDSOT>2.0.ZU;2-6
Abstract
High-temperature X-ray powder diffraction experiments have been performed t o investigate precisely the lattice parameters of an ionic conducting mater ial La0.683Ti0.95Al0.05O3 perovskite. This material was orthorhombic (space group P/mmm) at 29 and 192 degrees C, while it was tetragonal (space group P4/mmm) from 392 to 1402 degrees C. The orthorhombic-tetragonal phase tran sition is a possible explanation for the change in the temperature dependen ce of ionic conductivity around 400 degrees C. (C) 2000 Elsevier Science BN . All rights reserved.