Low temperature firing of 0.5wt% MnO2-added Pb(Zr0.53Ti0.47) O3 (PZT) ceramics is desirable for suppressing the volatilization of PbO. The effect of two additives, BiFeO3 and Ba(Cu0.5W0.5)O3, both with the perovskite-type structure on the sintering temperature and piezoelectric properties of the PZT ceramics has been investigated. The addition of two complex oxides lowered the sintering temperature and improved piezoelectric properties. Simultaneous addition of CuO improved the piezoelectric properties. A 0.92PZT-0.05BiFeO3-0.03Ba(Cu0.5W0.5)O3 ceramics including 0.08wt% CuO ceramics sintered at 935°C for 30min gave the following characteristics; Kp=47.0%, Qm=950, d33=236×10-12C/N, εT33/ε0=850, tanδ=1.0%, Tc=290°C, and bulk density=7.66g/cm3.
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Dong et al. (1993) studied this question.
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