Phase stability and equilibria in the La2O3-TiO2 system

Authors
Skapin, SD Kolar, D Suvorov, D
Citation
Sd. Skapin et al., Phase stability and equilibria in the La2O3-TiO2 system, J EUR CERAM, 20(8), 2000, pp. 1179-1185
Citations number
25
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN journal
09552219 → ACNP
Volume
20
Issue
8
Year of publication
2000
Pages
1179 - 1185
Database
ISI
SICI code
0955-2219(200007)20:8<1179:PSAEIT>2.0.ZU;2-T
Abstract
XRD, electron probe wavelength and energy dispersive X-ray analyses were us ed to reexamine the phase relations in the La2O(3)-TiO2 system. The diagram was redrawn to include the compound La4Ti3O12 in addition to La4Ti9O24, La 2Ti2O7 and La2TiO5. Above 1455 degrees C a cation deficient perovskite La2/ 3TiO3 is stabilized by a small number of Ti3+ ions and remains stable on co oling in air. The proposed diagram represents a section through the system at the normal oxygen pressure in air at 1 atm, compositions being expressed in terms of the oxide components stable at room temperature. (C) 2000 Else vier Science Ltd. All rights reserved.