Influence of pressure on the kinetics of ferroelectric phase transition in BaTiO3

Olga Mazur, Ken-ichi Tozaki, Yukio Yoshimura and Leonid Stefanovich

Physica A: Statistical Mechanics and its Applications, 2022, vol. 599, issue C

Abstract: The ferroelectric phase transition in barium titanate under pressure was studied within the framework of Landau – Ginzburg theory using differential scanning calorimetry. An innovative method for high-sensitive thermal measurements under pressure was demonstrated. It was shown that the relaxation process proceeds nonmonotonically with the formation of intermediate short-lived phases. It was established that polydomain ordering is preferred but the monodomenization of the sample is possible under certain conditions. A narrowing of the temperature hysteresis with increasing pressure was revealed. A new tricritical point in barium titanate crystals characterizing the changing of the phase transition has been experimentally determined and theoretically confirmed.

Keywords: Ferroelectric phase transition; Barium titanate; Tricritical point; Differential scanning calorimetry; Domain structure (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:599:y:2022:i:c:s037843712200320x

DOI: 10.1016/j.physa.2022.127436

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