Electric properties and phase transition behavior in lead lanthanum zirconate stannate titanate ceramics with low zirconate content

摘要

The phase transitions, dielectric properties, and polarization versus electric field (P–E ) hysteresis loops of Pb0.97La0.02(Zr0.42Sn0.58−xTix)O3 (0.13≤x≤0.18) (PLZST) bulk ceramics were systematically investigated. This study exhibited a sequence of phase transitions by analyzing the change of the P–E hysteresis loops with increasing temperature. The antiferroelectric (AFE) to ferroelectric (FE) phase boundary of PLZST with the Zr content of 0.42 was found to locate at the Ti content between 0.14 and 0.15. This work is aimed to improve the ternary phase diagram of lanthanum-doped PZST with the Zr content of 0.42 and will be a good reference for seeking high energy storage density in the PLZST system with low-Zr content.