Influence of strontium on manganese-doped barium titanate ceramics

Authors
Langhammer, HT Muller, T Felgner, KH Abicht, HP
Citation
Ht. Langhammer et al., Influence of strontium on manganese-doped barium titanate ceramics, MATER LETT, 42(1-2), 2000, pp. 21-24
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167577X → ACNP
Volume
42
Issue
1-2
Year of publication
2000
Pages
21 - 24
Database
ISI
SICI code
0167-577X(200001)42:1-2<21:IOSOMB>2.0.ZU;2-Z
Abstract
The influence of Sr on the crystal structure, microstructure, and thermal e xpansion of Ba0.98Sr0.02Ti1-xMnxO3 ceramics (0 less than or equal to x less than or equal to 0.02) was investigated. Compared to Sr-"free" samples the : transition region between tetragonal and hexagonal phase is shifted to si gnificant higher Mn concentrations. Mn contents higher than 2.0 mol% strong ly hinder grain growth at 1400 degrees C. The Goldschmidt tolerance factor is used to discuss the stabilization of the tetragonal phase by the Sr impu rity. (C) 2000 Elsevier Science B.V. Ail rights reserved.