Synthesis by sol-gel and characterization of strontium titanate powder
authors Tkach, A; Vilarinho, PM; Avdeev, M; Kholkin, AL; Baptista, JL
editors Vieira, T
nationality International
journal ADVANCED MATERIALS FORUM I
author keywords fine particles; powder chemical precipitation; SrTiO3
keywords PHASE SHIFTERS
abstract A simple alkoxide hydrolysis route of synthesis of fine crystalline strontium titanate powder is developed. The influence of processing conditions (Sr(OH)(2) concentration, stirring time) on the structural and morphological characteristics of the ST powders are presented and analyzed. XRD, SEM and particle size analysis were used to characterize the obtained powders. An average crystallite size is in the range 350-800 nm depending on processing parameters. At the same time ultra fine particles with size of about 60 nm and aggregates with size of about 2 mum were observed. The thermal behavior of powders was analyzed by TGA-DTA and dilatometry. Shrinkage started at 900 degreesC and optimum sintering temperature was achieved similar to1100 degreesC.
publisher TRANS TECH PUBLICATIONS LTD
issn 1013-9826
isbn 0-87849-905-9
year published 2002
volume 230-2
beginning page 40
ending page 43
web of science category Materials Science, Ceramics; Materials Science, Composites
subject category Materials Science
unique article identifier WOS:000179553200007
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