Defects and lattice distortions in the superionic conductor Ba0.84La0.16F2.16

Authors
Kadlec, F Moussa, F Simon, P Gruener, G Sobolev, BP
Citation
F. Kadlec et al., Defects and lattice distortions in the superionic conductor Ba0.84La0.16F2.16, MAT SCI E B, 57(3), 1999, pp. 234-240
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
57
Issue
3
Year of publication
1999
Pages
234 - 240
Database
ISI
SICI code
0921-5107(19990129)57:3<234:DALDIT>2.0.ZU;2-#
Abstract
Diffuse neutron scattering (DNS) experiments have been performed on a singl e crystal sample of Ba0.84La0.16F2.16 at temperatures from 600 to 1000 degr ees C. The results confirm that the defects form clusters and cluster aggre gates, the concentration of which diminishes upon heating. Furthermore, the data yield information about local lattice deformations and suggested that the mobile fluorine ions move in the closest vicinity of clusters, in agre ement with the enhanced ionic motion model. Quenching is shown to influence the defect structure and the ionic conductivity. (C) 1999 Elsevier Science S.A. AII rights reserved.