Abstract
Effects of addition of LiBiO2 or CuBi2O4 sintering-aids on low-temperature fabrication and piezoelectric properties of Pb[(Ni1/3Nb2/3)0.5Zr0.15Ti0.35]O3 (PNN-PZT) ceramics were investigated. Piezoelectric properties are often deteriorated by low-temperature sintering with addition of sintering-aids. Thus, it is important to select a suitable sintering-aid. The addition of LiBiO2 or CuBi2O4 sintering-aids was effective for low-temperature fabrication of PNN-PZT ceramics, and they showed superior piezoelectric properties to PNN-PZT ceramics without sintering-aids. 1wt% CuBi2O4-added PNN-PZT ceramics fabricated at 900°C with a high relative density of approximately 97% exhibited the longitudinal strain of 0.21% under the applied electric field of 40kV/cm.
