Processing and Characterization of Sol-Gel Derived Modified PbTiO3 for Ferroelectric Composite Applications |
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| Authors: | R. Igreja C.J. Dias J.N. Marat-Mendes |
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| Affiliation: | 1. Faculdade de Ciências e Tecnologia, Sec??o, de Física Aplicada, Torre, Universidade Nova de Lisboa, 2825, Monte de Caparica, Portugal
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| Abstract: | Powders of (Pb0.8Ca0.2)(Ti0.99Mn0.01)O3 have been prepared by sol-gel processing. A tetragonal phase is formed after heat treatment at as low as 800°C. The tetragonality was found to be 1.053±0.005 and Curie temperature 315°C. Composite films with 0–3 connectivity were prepared from 800°C heat treated powders and P(VDF-TrFE) by the solvent casting technique. Composites poled at 20 MV/m, exhibited a pyroelectric coefficient of 17.4 μC/m2K and a pyroelectric figure of merit (FOMp=p/ε) of 0.51 μC/m2K. |
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| Keywords: | sol-gel lead titanate ferroelectric electroactive material composites |
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