Electric properties of PIN-PMN-PT ceramics with BaTiO3 additive
摘要
30Pb(In1/2Nb1/2)O3-38Pb(Mg1/3Nb2/3)O3-32PbTiO3 ceramics with BaTiO3 additive were prepared by the conventional two-step solid state sintering method. The effects of BaTiO3 additive on phase structure, microstructure and electric properties of PIN-PMN-PT ceramics were investigated. The incorporation of BaTiO3 into the PIN-PMN-PT solid solutions leads to a crystallographic transformation from rhombohedral to tetragonal. With the increasing of BaTiO3 contents, rhombohedral-tetragonal phase transition temperature Trt and Curie temperature Tc decrease slightly and dielectric constant increase. The piezoelectric coefficient d33, electromechanical coupling factor kp and electric field induced strain S were improved by BaTiO3 incorporation, reaching maximum of 342 pC/N, 0.45 and 0.142% at 3 mol%, respectively.