Preparation and microwave characterization of PbTiO3 ceramic and powder

The ceramics of PbTiO3 and its powders have been prepared by a soi-gel proc ess. The constitution of its phase and structure was examined by x-ray diff raction and Fourier transform infrared spectroscopy. Characterization studi es were performed to determine the effects of particle size and degree of t etragonality. The dielectric properties of ceramics and powders of PbTiO3, composited with paraffin, were measured from 1 MHz to 18 GHz. All samples e xhibited evidence of relaxation phenomena in their dielectric spectra. The relaxation frequencies increased with decreasing particle size.