Substitution of Pb with (Li1∕2Bi1∕2) in PbZrO3-based antiferroelectric ceramics

PbZrO3-based antiferroelectric (AFE) ceramics are promising dielectrics for high-energy-density capacitors due to their reversible phase transitions during charge–discharge cycles. In this work, a new composition series, [Pb0.93−xLa0.02(Li1∕2Bi1∕2)xSr0.04][Zr0.57Sn0.34Ti0.09]O3, with Li+and Bi3+substitution of Pb2+at x=0, 0.04, 0.08, 0.12, 0.16 is investigated for the microstructure evolution, ferroelectric (FE) and dielectric properties. It is found that Li+and Bi3+substitution can significantly reduce the sintering temperature and simultaneously enhance the dielectric breakdown strength. An ultrahigh energy efficiency (94.0%) and a large energy density (3.22J/cm3)are achieved in the composition of x=0.12with a low sintering temperature (1075∘C).