Abstract: 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 F_RL-F_RH 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 F_RL-F_RH phase transition temperature at 15℃
, this is significant for its application.

Key words: PZT95/5, .FRL-DRH, pyroelectric, ferroelectric ceramic, dielectric properties