Study on Modified PZT95/5 Ferroelectric Ceramics

PZT95/5 samples were prepared with the conventional ceramic process. Based on the principle of the same valance, different ionic radius; similar ionic radius, different valances the additives such as alkali-metal carbonates, alkali-earth-metal carbonates, Fe2O3, SiO2, Nb2O5 and WO3 were doped into the PZT95/5 separately. The dielectric properties, polarization properties and FR.L-FRH phase transition behavior were studied. The acceptor additives make dielectric constant of the material decrease, and the donor additives demonstrate the opposite effect; The remnant polarization in the material climes up with the increase of the cationic valances of additives; The pure PZT95/5 ferroelectric material obtained possesses FRL-FRH phase transition temperature at 15℃ , this is significant for its application.