BFO content-influence on the structure and properties of theBi (Mg1/2Ti1/2)O3-PbTiO3-xBiFeO3 ceramics
CHAO Bo, LIU Peng*, ZHAO Xiaogang, LIU Sujuan
(College of Physics and Information Technology，Shaanxi Normal University， Xi′an 710119，Shaanxi, China)
Abstract:
Ceramic with the chemical compositions of Bi(Mg1/2Ti1/2)O3-PbTiO3-xBiFeO3 (BMT-PT-xBFO) piezoelectric ceramic were prepared by conventional solid-state reaction method.The samples were tested and characterized by X-ray diffraction (XRD),dielectric temperature spectrum test system,environment scanning electron microscopy(SEM),quasi-static d33 meter. The results show that the density of samples decrease with sintering temperature.When sintering temperature is 1 075 ℃,different amount of BFO samples form a single perovskite structure (ABO3) solid solution. BiFeO3 doping can effectively reduce the average particle size of powder.It can be found that the BMT-PT ceramics obtained with 0.015 mol BiFeO3 addition and sintered at 1 075 ℃ show excellent performance relatively.
KeyWords:
high curie temperature; dielectric properties; piezoelectric properties
