Electric properties of 0-3 (PZT,KTN)/P(VDF-TrFE) triphasic ferroelectric composites

0-3（PZT，KTN）/P（VDF-TrFE）triphase ferroelectric composite was prepared when potassium tantalate niobate (KTN) particles and lead zirconate titanate (PZT) particles were embedded into the polyvinylidene fluoride trifluoroethylene (P(VDF-TrFE)) copolymer. The microstructure and distributions of PZT phase and KTN phase were analyzed using SEM and EDAX technique. The electric properties were measured for the ferroelectric composite with different volume fractions of KTN phase. The results indicate that PZT and KTN particles are distributed uniformly although a few of clusters occur. With increasing the KTN volume fraction，the poling current I，dielectric constant ε_r and dielectric loss tanδ increase，piezoelectric coefficients d₃₃ and pyroelectric coefficients p₃ increase firstly and then reduce，but both d₃₃ and p₃ are higher than those of PZT/P(VDF-TrFE) composite with the same PZT volume fraction.