Structural, piezoelectric and dielectric properties of PSLZT–PMnN ceramics

Pb0.94Sr0.05La0.01(Zr0.54Ti0.46)0.9975O3–Pb(Mn1/3Nb2/3)O3 (PSLZT–PMnN) ceramics with pure perovskite structure were prepared by conventional mixed oxide method. The influence of PMnN on the structural, dielectric and piezoelectric properties was investigated. The experimental results showed that the perovskite structure changed from tetragonal to rhombohedral symmetry and the Curie temperature decreased gradually with the increase of PMnN. The composition with 3 mol% PMnN exhibited favorable properties of Qm (400), d33(660 pC/N), kp (0.60), KT (1940), tan δ (0.90%) and TC (247 °C), exhibiting potential usage for piezoelectric actuator and sensor applications.