Piezoelectric oxides Pb1−xLax(ZryTi1−y)1−x/4O3 (PLZT) were synthesized by the solid-state
reaction process and Pb0.96La0.04(Zr0.54Ti0.46)0.99O3/polyvinylidene fluoride (PL0.04ZT/PVDF),
Pb0.92La0.07(Zr0.555Ti0.445)0.9825O3/PVDF (PL0.07ZT/PVDF) composites with various particle sizes and
contents (50–90 vol.%) of the ceramic phase were prepared by the hot-press process. The Curie tem-
perature (Tc) of PLZT decreases monotonously from 312 ◦C to 98 ◦C with La content (x) increasing
from 0.02 to 0.09. The polarizability of PLZT/PVDF composites increases from 39.5% (PL0.04ZT/PVDF) to
56.7% (PL0.07ZT/PVDF) when poled at 125 ◦C (at the vicinity of Tc of PL0.07ZT). As a result, the electrical
property improvement with d33 (εr) from 53 pC/N (159) to 76 pC/N (222) proves that tailoring Tc of
the piezoelectric ceramic to the poling temperature is a useful way to enhance the piezoelectric and
dielectric properties of the ceramic/polymer composite. To further investigate the electrical properties
of the 0–3 type PLZT/PVDF composite, the particle size and volume fraction of PLZT are also optimized