DIELECTRIC AND PIEZOELECTRIC PROPERTIES OF THE SOLID-SOLUTION SYSTEM PB(FE2 3W1/3)O-3-PBZRO3/

Solid solution ceramics having various ratios between Pb(Fe2/3W1/3)O-3 and PbZrO3 were synthesized by a conventional solid state reaction. F or well sintered specimens, dielectric, piezoelectric and ferroelectri c properties were studied as a function of composition as well as of t emperature. Maximum values obtained at room temperature are: the reman ent polarization P-r=24.6 mu C/cm(2), the electromechanical coupling c oefficient k(33)=0.32 and the piezoelectric constant d(33)=56.Ox10(-12 ) C/N. Based on these experimental results combined with an XRD study, the phase diagram for the system of Pb(Fe2/3W1/3)O-3-PbZrO3 was final ly determined, except for the narrow range near the end member Pb(Fe2/ 3W1/3)O-3.