This article is cited in 7 papers

Ferroelectricity

Effect of the degree of overcooling on relaxation of the domain structure of triglycine sulphate

O. Yu. Mazur, L. I. Stefanovich

Institute for Physics of Mining Processes, National Academy of Sciences of Ukraine, Dnepr-5, Ukraine

Abstract: The formation and evolution of the domain structure in the vicinity of the Curie point is studied in triglycine sulfate crystals subjected to fast cooling $T_C$. We derive an analytical expression for time dependence of the mean characteristic domain size. This expression enable us to investigate the process of enlargement of domain structure through all stages of its relaxation into a state of thermodynamic equilibrium. The model predicts a root-square behavior of the mean domain size, which agrees well with available experimental data. The rate of enlargement of the domain structure is shown to depend on the degree of overcooling. The time dependence of the mean domain size obtained in this study enables us to determine the radius of intermolecular interactions in the crystals under study.

Keywords: quenched ferroelectric system, degree of overcooling, domain structure evolution, relaxation, triglycine sulfate.

Received: 11.03.2019
Revised: 11.03.2019
Accepted: 02.04.2019

DOI: 10.21883/FTT.2019.08.47972.412

 English version: Physics of the Solid State, 2019, 61:8, 1420–1424

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