Dielectric and Piezoelectric Properties of the Solid Solution System Pb(Fe2/3W1/3)O3–PbZrO3

Abstract
Solid solution ceramics having various ratios between Pb(Fe2/3W1/3)O3 and PbZrO3 were synthesized by a conventional solid state reaction. For well sintered specimens, dielectric, piezoelectric and ferroelectric properties were studied as a function of composition as well as of temperature. Maximum values obtained at room temperature are: the remanent polarization P r=24.6 µ C/cm2, the electromechanical coupling coefficient k 33=0.32 and the piezoelectric constant d 33=56.0×10-12 C/N. Based on these experimental results combined with an XRD study, the phase diagram for the system of Pb(Fe2/3W1/3)O3–PbZrO3 was finally determined, except for the narrow range near the end member Pb(Fe2/3W1/3)O3.

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