Measurement of piezoelectric ceramic parameters - A characterization of the elastic, dielectric and piezoelectric properties of NCE51 PZT

This article describes in detail the measurement method and the calculation of the complete matrix of piezoelectric coefficients from one PZT ceramics disc. A set of piezoelectric samples is produced from a disc of appropriate dimensions for all types of vibrations that comply with the world and the European standards. The samples produced are a thin plate for traverse length mode, a thin disc for radial mode and thickness extension mode, a cylinder for longitudinal length mode and a thin plate for thickness shear mode. Soft PZT ceramics, type NCE51, was used for calculation of the matrix coefficient and for description of the measurement method. Frequency method was used for the measurements and for the calculation of all coefficients. Impedance analyzer Agilent 4294A with a range from 40 Hz to 110 MHz and measuring tweezers “Tweezers Contact Test Fixture 16334A” were used for the measurements. The experiments verified the possibility of determining the complete matrix of the coefficients on piezoelectric ceramics without major requirements regarding the set of samples needed for the measurement.