Automated measuring system for studying the temperature dependence of dielectric spectra of ferroelectrics

Abstract

An automated measuring system developed by authors for studying the temperature dependence of dielectric spectra of ferroelectrics in the frequency range 12Hz-100kHz, the temperature range 80-450K and the amplitude of the measuring signal 5mV -1.275v has been presented. It is based on the GW Instek LCR-819 LCR Meter, the Measurement Computing USB-TEMP-AI temperature meter and an OWON ODP3033 programmable power supply. The temperature measurement resolution is 0.001K and the controlled rate of temperature change is from 0.001K/min to 1K/min. The control software, created in the LabViewgraphical environment, makes it possible to carry out measurements in an automatic mode, present the results obtained in the form of graphs (Cole-Cole plot and frequency dependency of ? and ??) and save the data as a file.