The use of piezomaterials as a substrate for a graphene structure is considered. Since the surface acoustic waves generated in piezoelectric materials, are on the surface of a solid body, piezoelectrics can act as a substrate for graphene. Methods for determining the electrical parameters of piezoelectric materials are studied and selected, the ways to improve these methods are considered. In order for piezoelectrics to be used as a substrate for graphene, the properties of piezoelectrics must be carefully studied. Therefore, the frequency characteristics of a sample in the form of a tablet based on solid solutions of zirconate – lead titanate were measured. As an improvement in the methods for determining the electrophysical parameters of piezoelectric elements, it is proposed to process the measurement results automatically using a multifunctional mathematical program, such data processing helps to reduce the error of indirect measurement results of the electrophysical parameters of piezoelectric materials. A graph of the amplitude-frequency characteristics of the sample was built. Thanks to computer processing, it was possible to reveal the relationship between the piezoelectric constant of the sample and its geometric dimensions. It turned out that the piezoelectric element dimensions strongly affect the frequency response and other piezoelectric constants.