THE "RESONANCE–ANTIRESONANCE" METHOD FOR DETERMINING
THE ELECTROPHYSICAL PARAMETERS OF PIEZOELECTRICS 

Angelina E. Zhurina, Master degree student, Penza State University (40 Krasnaya street, Penza, Russia), gelya.zhurina@mail.ru
Nikita S. Emelyanov, Master degree student, Penza State University (40 Krasnaya street, Penza, Russia), emelianoff.nikita@gmail.com
Ekaterina A. Pecherskaya, Doctor of technical sciences, associate professor, head of the sub-department of information and measuring equipment and metrology, Penza State University (40 Krasnaya street, Penza, Russia), pea1@list.ru
Andrey V. Fimin, Postgraduate student, Penza State University (40 Krasnaya street, Penza, Russia), mr.l0tus@mail.ru

Background. Piezoelectric materials are promising for use in sensors, for monitoring dynamic processes as primary information converters of measuring and control systems. The piezomodule makes it possible to formalize the relationship between the electrical and elastic properties of the material, which indicates the relevance of the study of methods for its determination. Materials and methods. The electrophysical parameters of samples of materials with piezo- soft and piezo-hard modes are investigated by the "resonance–antiresonance" method. Results. The analysis of the applicability of the "resonance–antiresonance" method for samples with piezo-soft and piezo-hard modes, in which the oscillation modes corresponding to the sample are excited in the samples, is performed. The values of all elastic piezoelectric and dielectric constants are calculated from the measured values of the characteristic frequencies, as well as the capacitance of the samples. Conclusions. The applicability of the "resonance–antiresonance" method for determining the electrophysical parameters of piezoelectrics both in materials with piezo-soft modes and with piezo-rigid ones is confirmed. It is shown that the complete set of constants obtained for a sample of one form differs from a sample of the same material, but of a different form. This is due to the fluctuation of properties during the transition from a piezoelectric element of one geometry to a piezoelectric element with another geometry due to the different level of their polarization, the spread of the degree of their structural heterogeneity.

piezoelectric, the method of "resonance-antiresonance", piezoelectric constants, complex conductivity, frequency

Zhurina А.E., Emelyanov N.S., Pecherskaya E.A., Fimin A.V. The "resonance-antiresonance" method for determining the electrophysical parameters of piezoelectrics. Izmereniya. Monitoring. Upravlenie. Kontrol' = Measurements. Monitoring. Management. Control. 2022;(3):76–82. (In Russ.). doi:10.21685/2307-5538-2022-3-9