Novel Combustion Route for SrTiO3 Powders

This paper describes the combustion synthesis (CS) of SrTiO 3 using Ti, TiO 2 , and SrO 2 . The kinetics of the CS reaction and the effect of the $\text{Ti}/(\text{Ti}+\text{TiO$_{2}$})$ ratio on the CS reaction were examined. The thermal behavior of each reactant and the mixture of reactant powders...

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Bibliographic Details
Published inApplied physics express Vol. 5; no. 4; pp. 041201 - 041201-3
Main Authors Kikuchi, Asami, Tran, Doanh, Lin, Sidney, Okinaka, Noriyuki, Akiyama, Tomohiro
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.04.2012
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Summary:This paper describes the combustion synthesis (CS) of SrTiO 3 using Ti, TiO 2 , and SrO 2 . The kinetics of the CS reaction and the effect of the $\text{Ti}/(\text{Ti}+\text{TiO$_{2}$})$ ratio on the CS reaction were examined. The thermal behavior of each reactant and the mixture of reactant powders were investigated to study the reaction mechanism. As a result, the oxidation of Ti was found to trigger the CS reaction. The apparent activation energy of the CS reaction was calculated as 287.6 kJ/mol. The obtained results suggest a new route to produce commercially available highly dense ceramics.
Bibliography:Sketch of CS reactor. TG--DTA of loose mixtures of reactants ($\text{SrO$_{2}$}:\text{Ti}:\text{TiO$_{2}$}=1.00:0.25:0.75$) in oxygen heated at rates of 2 and 100 °C/min. Arrhenius plot of TG data used to calculate apparent activation energy of CS of SrTiO 3 . IR thermographical images of reactant pellets during CS reaction with different $\text{Ti}/(\text{Ti}+\text{TiO$_{2}$})$ ratios. XRD patterns of combustion-synthesized SrTiO 3 with different $\text{Ti}/(\text{Ti}+\text{TiO$_{2}$})$ ratios.
ISSN:1882-0778
1882-0786
DOI:10.1143/APEX.5.041201