PZT Ceramics Prepared from Two Phase Gels |
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| Journal | Key Engineering Materials (Volume 290) |
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| Volume | Fractography of Advanced Ceramics II |
| 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., 2005, Key Engineering Materials, 290, 353 |
| Online since | July, 2005 |
| Authors | J. Briančin, Ľubomír Medvecký, Helena Bruncková, M. Kmecová |
| Keywords | (Pb,Zr,Ti)-Acetate Precursor, Dielectric Properties, Pb(Zr0.53Ti0.47)O3, Polycondensation, PZT Powders, Sintering, Sol-Gel |
| Abstract | [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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