XXIX International Symposium "Nanophysics and Nanoelectronics", Nizhny Novgorod, March 10-14, 2025
Ferroelectricity

Piezoelectric force microscopy for investigation the effect of electrical breakdown on the electrophysical properties of ferroelectric PVDF films

E. L. Buryanskaya^ab, A. A. Polivets^a, S. V. Kondrashov^a, D. A. Kiselev^b, A. S. Osipkov^a, M. O. Makeev<sup>a

a</sup> Bauman Moscow State Technical University
^b National University of Science and Technology «MISIS», Moscow

Abstract: The effect of electrical breakdown on the electrophysical properties of PVDF films was investigated. The electrical strength of the material was determined before and after polarization. The piezoelectric coefficient $d_{33}$ was measured using the quasi-static Berkelinecourt method. It was found that for unpolarized films after breakdown, the $d_{33}$ values were nonzero, indicating local polarization in the pre-breakdown region. Using piezo response force microscopy (PFM), the morphology of the film surface was studied after electrical breakdown. Vertical and lateral piezoelectric response distribution signals were obtained. The values of local piezoelectric coefficients $d_{33}$ were calculated in the vicinity and at a distance from the breakdown point.

Keywords: ferroelectricity, piezoelectric force microscopy, polymer ferroelectrics, electrical breakdown, flexible electronics, smart materials.

Received: 06.03.2025
Revised: 06.03.2025
Accepted: 05.05.2025

DOI: 10.61011/FTT.2025.07.61197.31HH-25

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