Fabrication and characterization of xBiGaO3-(1-x)PbTiO3:: a high temperature, reduced Pb-content piezoelectric ceramic

Bismuth gallium based crystalline solutions, xBiGaO(3)-(1-x)PbTiO3 (BG-PT), were studied as novel, material group of low lead content perovskite ceramics. X-ray diffraction (XRD) was utilized to investigate the crystal structure and phase evolution. A pure perovskite phase with tetragonal symmetry was obtained for x less than or equal to 0.25. Differential scanning calorimetry (DSC) revealed that a first order solid-to-solid transformation occurs at 495 degreesC for x=0.2. The dielectric properties were investigated at room and elevated temperatures. Our results show that BG-PT is a good candidate high-temperature piezoelectric ceramic, with reduced lead content. (C) 2002 Published by Elsevier Science B.V.