Pyroelectric charge release in rhombohedral PZT

TL;DR

This study introduces a computer-controlled experimental setup to accurately measure pyroelectric charge in ferroelectric PZT materials across various compositions and temperatures, focusing on the Zr-rich phase transition region.

Contribution

It presents a novel measurement system enabling precise polarization-temperature analysis of PZT, especially in the Zr-rich phase transition region.

Findings

High-accuracy polarization vs. temperature data obtained.

Detailed behavior of PZT in the Zr-rich phase transition region.

Insights into the isostructural phase transition FRL-FRH.

Abstract

A new experimental set-up controlled by computer has been made to measure the pyroelectric charge of ferroelectric materials with a relatively high conductivity at slow rates of temperature variation. It allowed us to obtain the polarisation vs. temperature behaviour of PZT with various compositions in the whole range of temperatures with a high accuracy. The ferroelectric Zr-rich region of the PZT phase diagram, where the isostructural phase transition FRL-FRH takes place, has been studied.