Piezo-, pyro-, ferroelectric, and dielectric properties of (Pb0.88Sm0.08)(Ti1-xMnx)O3/polyetherketoneketone 50/50 vol % ceramic/polymer composites

(Pb0.88Sm0.08)(Ti1-xMnx)O-3/polyetherketoneketone 50/50 vol % ceramic/polymer composite films were studied with regard to their piezo-, pyro-, ferroelectric, and dielectric properties. The dielectric relaxation reflects the interaction between the constituent phases. Appropriate values of the dielectric permittivity, remanent polarization, and piezoelectric coefficients were obtained in the same way as those of other ceramic/polymer composite films. However, the coercive field, the pyroelectric coefficient, the pyroelectric figure of merit, and the electromechanical coupling factor were lower and the mechanical losses were higher. These results are discussed taking into account the incorporation of Sm3+ and Mn4+ into the perovskite structure in the ceramic phase. (C) 2002 American Institute of Physics.