Ferroelectric Material Hysteresis Curve Tracer System Design Based on Microcontroller and NI myDAQ

摘要

The design of measuring devices for ferroelectric properties needs to be developed to support research on the nature of ferroelectric materials such as hysteresis. An integrated system and a fully automatic hysteresis characterization process are needed along with the uncertainty of the measurement parameters obtained. Through this research, an instrumentation system was built which aims to trace the hysteresis curve of a sample with ferroelectric materials. High voltage is given to the ferroelectric sample that can be controlled to produce an electric field that can cause capacitance and polarization in the sample. Measurements of polarization data, electric fields and formation of hysterical curves generated by the samples were done in the LabVIEW application. The conclusion obtained from this research is piezo buzzer sample has a polarization characteristic that can be changed by adjusting the value of the electric field given through high voltage control.