Effect of Li2CO3 addition on structural and electrical properties of 0.7BiFeO3-0.3BaTiO3 piezoelectric ceramic

In this work, Li2CO3 was added into 0.7BiFeO(3)-0.3BaZr(0.02)Ti(0.98)O(3)-0.01molMnO(2) (70BFBTMn) piezoelectric ceramics to reduce their sintering temperatures. 70BFBTMn ceramics were sintered by a conventional solid reaction method, and their structural, dielectric, piezoelectric and ferroelectric properties were studied. These results indicate that 0.5% (mole) Li2CO3 is the optimized content and it can reduce the sintering temperature by 100 degrees C, making the possibility of the piezoelectric ceramics cofiring with Ag electrodes at low temperatures to manufacture multilayer piezoelectric actuators.