Influence of B2O3 doped on microstructure and electrical properties of the Pb0.925Ba0.075Nb2O6 ceramics
LIU Zhigang, LIU Peng*, CHEN Xiaoming, ZHAO Xiaogang, CHAO Bo
(School of Physics and Information Technology, Shaanxi Normal University, Xi′an 710119, Shaanxi, China)
Abstract:
Pb0.925Ba0.075Nb2O6-0.5wt.%TiO2-xwt.%B2O3(PBNT-xB)(x=0, 0.02, 0.04, 0.06, 0.08) piezoelectric ceramics with high Curie temperature were fabricated via the conventional solid state reaction method. The influence of the B3+ doped ions on crystallite structure，microstructure，dielectric and piezoelectric properties were studied. The results show that the doping of B3+ ions facilitates can improve densification of the ceramics. The connection between grain size, lattice parameters of the ceramics and the B3+ contents are confirmed. The ceramic with x=0.04 sintered at 1 260 ℃ gains excellent dielectric and piezoelectric properties.
KeyWords:
PbNb2O6; piezoelectric ceramics; dielectric properties; piezoelectric properties
