Piezoelectric and Dielectric Properties for Doped Lead Zirconate Titanate Ceramics under Strong Electric Field

Abstract

Piezoelectric and dielectric responses were investigated for doped lead zirconate titanate (PZT) ceramics under strong electric field (1.6 MV/m). Displacements and polarization changes were measured and the effects of dopants were discussed. Doping of 2% Nb significantly increased the displacement of (Pb 0.875 Sr 0.125 )(Zr 0.55 Ti 0.45 )O 3 ceramics. Doping of 2% Fe suppressed 90° domain rotation and decreased displacement. Results were discussed by dividing displacement and polarization change into two components, i.e., a piezoelectric or dielectric contribution and a 90° domain rotation contribution.