Since the discovery of PZT piezoelectric ceramics, there has been many application of PZT ceramics. Recently multicomponent piezoelectric ceramics which is based on PZT is required to the application of resonator and actuator, etc. The multicomponent systems have a lower sintering temperature and better dielectric, piezoelectric properties than PZT binary system. $Pb(Ni_½Nb_⅔)O_3-Pb(Zn_½Nb_⅔)O_3-PbZrO_3-PbTiO_3$ quarternary system was selected in this research, which was mixed with $Pb(Ni_½Nb_⅔)O_3-PbZrO_3-PbTiO_3$ and $Pb(Zn_⅓Nb_⅔)O_3-PbZrO_3-PbTiO_3$ ternary system.
In wide composition region of the $(0.15-x)Pb(Ni_½Nb_⅔)O_3-xPb(Zn_⅓Nb_⅔)O_3-0.85Pb(Zr_({1-y})Ti_y)O_3 [0＜x＜0.15, 0.45＜y＜0.55]$ the perovskite phase was formed and the disordering of B site in $ABO_3$ type was detected by the $T_c$ shift and SADP(Selected Area Diffraction Pattern) of TEM.
The dielectric, piezoelectric properties due to the variation of PZN content were well explained by the grain size effect and the shift of the MPB region caused by the variation of PZN content. The effect of sintering temperature on the dielectric, piezoelectric properties were also observed and discussed.
