Presented in Figs 1 and 2 are a comparison of the polarization and dielectric (real part) responses of the copolymer and terpolymer. As a ferroelectric, the copolymer exhibits a nearly square polarization hysteresis loop due to the large nucleation barrier for domain wall motion. The remnant polarization (Pr) is 75 mC/m2 and the cohesive electric field (Ec) is around 60 MV/m. This hysteresis is nearly eliminated in the P(VDF-TrFE-CFE) terpolymer, as expected for a relaxor ferroelectric at temperatures near the dielectric constant maximum (due to the absence of macroscopic polarization domains).