Abstract
Ferroelectric PZT(20/80) thick films were fabricated by the screen printing method. And the PZT precursor solution was spin-coated on the PZT thick films to obtain a densification. Electrical properties of the thick films as a function of the firing temperature of the PZT precursor solution were investigated. The thickness of all thick films was approximately 60–62 μm. The porosity increased with increasing the firing temperature of the sol, and the porous microstructure and some large pores were observed above 700 °C due to the PbO evaporation. The relative dielectric constant, remanent polarization and dielectric breakdown strength of the specimen fired at 650 °C were 222, 16.5 μC/cm 2 and 73 kV/cm, respectively.
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