Processing and properties of CeO2-doped ferroelectric (Na0.5Bi0.5)0.94Ba0.06TiO3

The (Na0.5Bi0.5)0.94Ba0.06TiO3-0.6 wt.%CeO2 (abbreviated as NBT-BT6-0.6%CeO2) ceramic was synthesized by a citrate method. The effects of poling condition on piezoelectric properties of NBT-BT6-0.6%CeO2 ceramic and the influences of sintering temperature on its ferroelectric and piezoelectric properties were investigated. It was found that the piezoelectric properties of NBT-BT6-0.6%CeO2 ceramic highly rely upon poling field and poling temperature, while no remarkable effect of poling time on the piezoelectric properties was found in the range of 5-25 min. Moderate increase of sintering temperature improves the piezoelectric and ferroelectric properties of NBT-BT6-0.6%CeO2 ceramic. With respect to the piezoelectric and ferroelectric properties, a sintering temperature range of 1130-1170 °C is ascertained for NBT-BT6-0.6%CeO2 ceramic.