Piezoelectric properties of Pb(InNb)1/2O3-PbTiO3 solid solution ceramics

Piezoelectric and electrical properties of ceramics in the xPb(InNb)(1/2)O-3-(1-x)PbTiO3 [PIN:PT(x)] system are described. A high dielectric constant and remanent polarization were obtained for compositions near the morphotropic phase boundary. In this system, the morphotropic phase boundary is found to be located at the composition x = 62 mol% PIN. For this composition, the dielectric constant is 2100 at room temperature and increases to 23500 at it's transition temperature of 280 degrees C. The remanent polarization is approximately 35 mu C/cm(2) and corresponds to a coercive field of 16 kV/cm. Finally, poled ceramics of the morphotropic phase boundary composition posses a d(33) value of 395 pC/N, a d(31) of -175 pC/N and a k(31) of 30%.