Bi2O3 as an effective sintering aid for La(Sr)MnO3 powder prepared by autoignition route

Authors
Chakraborty, A Maiti, HS
Citation
A. Chakraborty et Hs. Maiti, Bi2O3 as an effective sintering aid for La(Sr)MnO3 powder prepared by autoignition route, CERAM INT, 25(2), 1999, pp. 115-123
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CERAMICS INTERNATIONAL
ISSN journal
02728842 → ACNP
Volume
25
Issue
2
Year of publication
1999
Pages
115 - 123
Database
ISI
SICI code
0272-8842(1999)25:2<115:BAAESA>2.0.ZU;2-M
Abstract
Sintering characteristics of the Sr-doped lanthanum manganite [La(Sr)MnO3] powder, prepared by autoignition of citrate-nitrate gel, have been studied by measuring density and evaluation of microstructural information. Bi2O3 i s found to be an effective sintering aid for this material. Increased conce ntration of point defects arising from substitution of Bi in La site is the plausible cause of enhanced sintering. Measurement of electrical conductiv ity and thermal expansion coefficient indicate that Bi2O3 addition does not have any significant effect on these properties. (C) 1999 Elsevier Science Limited and Techna S.r.l. All rights reserved.