Study of low-temperature sintering modified PbTiO3 piezoelectric ceramic

A new low-temperature sintering modified PbTiO3 piezoelectric ceramic material was prepared by adding Bi(Cd1/2Ti1/2)O-3,MnO2,SiO2. The modified PT material has excellent properties such as low-sintering temperature, high piezoelectric activities, large piezoelectric anisotropy, high mechanical quality factor, low dielectric constant and dielectric loss. The main parameters are K-t=0.49, K-p=0.027, K-t/K-p=18.2, d(33)=65 X 10(-12) C.N-1, Q(m)=514, rho(v) = 7.4 X 10(3) kg.m(-3), T-c=312degreesC, epsilon(33)(T)/epsilon(0) = 177, tandelta=0.63%. It shows great application prospects in the fields of multilayer piezoelectric filter and multilayer piezoelectric step-down transformer.