PZT Ceramics Prepared from Two Phase Gels

Abstract:

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[Pb(Zr,Ti)(OAc)x(OR)y] acetate-alkoxide precursor was prepared by chelating from organic Pb, Zr and Ti alkoxides by their dissolution in various amounts of acetic acid (AcOH). The optimum mole ratio of (Pb+Zr+Ti) to AcOH for preparation gel is 1:7 and a pure perovskite phase is formed at 500 °C. At a low AcOH concentration, two-phase (pyrochlore and perovskite) regions are formed during gellation. During sintering, the decomposition of a pyrochlore phase and the formation of a perovskite phase takes place Dependences of dielectric permitivities and losses on temperature in final PZT ceramics were very similar and they were not influenced by the type of calcinate.

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Periodical:

Edited by:

J. Dusza, R. Danzer and R. Morrell

Pages:

353-357

DOI:

10.4028/www.scientific.net/KEM.290.353

Citation:

J. Briančin et al., "PZT Ceramics Prepared from Two Phase Gels ", Key Engineering Materials, Vol. 290, pp. 353-357, 2005

Online since:

July 2005

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$35.00

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