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

Abstract

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, [Pb[Formula: see text]La[Formula: see text](Li[Formula: see text]Bi[Formula: see text]Sr[Formula: see text]][Zr[Formula: see text]Sn[Formula: see text]Ti[Formula: see text]]O3, with Li[Formula: see text] and Bi[Formula: see text] substitution of Pb[Formula: see text] at [Formula: see text], 0.04, 0.08, 0.12, 0.16 is investigated for the microstructure evolution, ferroelectric (FE) and dielectric properties. It is found that Li[Formula: see text] and Bi[Formula: see text] 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 (3.22[Formula: see text]J/cm[Formula: see text] are achieved in the composition of [Formula: see text] with a low sintering temperature (1075∘C).