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Methodology for studying polarization noise in ferroelectric materials and its application to barium titanate

S. V. Baryshnikov^a, A. Yu. Milinskiy^a, E. V. Stukova<sup>b

a</sup> Blagoveshchensk State Pedagogical University
^b Amur State University, Blagoveshchensk, Amur region

Abstract: The paper proposes a method for studying polarization noise in ferroelectrics and tests it using a single crystal and ceramics of barium titanate. Polarization noise is detected, the spectral density of which is inversely proportional to the frequency of the measuring field. Polarization noise is observed only in the ferroelectric phase and correlates with the magnitude of the pyroelectric current, which indicates its connection with spontaneous polarization.

Keywords: polarization noise, ferroelectric, spontaneous polarization, phase transition, pyroelectric current.

Received: 04.12.2024
Revised: 21.01.2025
Accepted: 28.01.2025

DOI: 10.61011/JTF.2025.06.60461.437-24

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