Algorithm for Processing Broadband Dielectric Spectroscopy Data of Heterogeneous Materials

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Authors

  • Alexander TONKOSHKUR Oles Honchar Dnipro National University, Dnipro, Ukraine
  • Andrey SHCHERBAK Oles Honchar Dnipro National University, Dnipro, Ukraine
  • Alexander LYASHKOV Oles Honchar Dnipro National University, Dnipro, Ukraine

Abstract

This work focuses on the development of computational techniques for processing dielectric measurement data, particularly those from broadband dielectric spectroscopy. A novel approach is formulated and tested for software implementation, enabling the selection of parameter sets for known dispersion models used in analyzing complex dielectric spectra of heterogeneous materials.

The proposed algorithm divides the wide frequency range of measurements into shorter subranges corresponding to distinct observed dispersion regions. These regions are identified using one (or more known phenomenological relaxation models via least-squares methods (LSMs), deconvolution, and other techniques.

Testing of the algorithm on the frequency-dependent complex dielectric permittivity of varistor ceramic materials demonstrated satisfactory accuracy and physical consistency of the results. These findings highlight the efficiency and potential of the proposed approach.

Keywords:

dielectric spectroscopy, data processing, algorithm, complex spectrum, ZnO ceramics

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