Low-Temperature Preparation of (Ba,Sr)TiO3 Perovskite Phase by Sol-Gel Method

Authors: Shiibashi, H.; Matsuda, H.; Kuwabara, M.

Source: Journal of Sol-Gel Science and Technology, Volume 16, Number 1-2, October 1999 , pp. 129-134(6)

Publisher: Springer

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We have investigated on the synthesis of Ba_1 − xSr_xTiO_3(BST, x = 0.0–1.0) solid solution at low temperature by a sol-gel method using precursor solutions of Ba(OC_2H_5)_2, Sr(OC_2H_5)_2, and Ti(OCH(CH_3)_2)_4 dissolved in 2-methoxyethanol. Crystalline BST solid solution monolithic gels were obtained as dried at 90°C. Crystalline fraction of BST gels increased with increasing concentration of the precursor solution and increasing amount of the hydrolysis water used. Ba_0.4Sr_0.6TiO_3 (x = 0.6) gels from a precursor solution of 0.5 mol/l with hydrolysis water of H_2O/Ti = 50 crystallized during aging at 30°C.

Keywords: BST monolithic gel; crystallization at low temperature; sol-gel processing using metal alkoxides

Document Type: Regular Paper

Affiliations: Department of Materials Science, University of Tokyo, Tokyo 113-8656, Japan

Publication date: October 1, 1999

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