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Processing and characterization of sol-gel derived modified PbTiO3 for ferroelectric composite applications

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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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Authors and Affiliations

  1. Faculdade de Ciências e Tecnologia, Secção, de Física Aplicada, Torre, Universidade Nova de Lisboa, 2825, Monte de Caparica, Portugal

    R. Igreja, C. J. Dias & J. N. Marat-Mendes

Authors
  1. R. Igreja
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  2. C. J. Dias
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  3. J. N. Marat-Mendes
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Igreja, R., Dias, C.J. & Marat-Mendes, J.N. Processing and characterization of sol-gel derived modified PbTiO3 for ferroelectric composite applications. J Sol-Gel Sci Technol 8, 721–723 (1997). https://doi.org/10.1007/BF02436929

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  • DOI: https://doi.org/10.1007/BF02436929

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