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

Mazur, Olga; Tozaki, Ken–ichi; Yoshimura, Yukio; Stefanovich, L. I.

doi:10.1016/j.physa.2022.127436

Cited by 6 publications

(2 citation statements)

References 61 publications

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“…In the framework of phenomenological Landau theory, the phase transition is governed by the effective free energy F, which expands to a power series on σ [28][29][30][31][32][33][34][35][36][37]:…”

Section: Basic Equationsmentioning

confidence: 99%

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Investigation of the Strain–Stress Field in Nanoscale Multilayer Systems by the Phase Plane Method

Belous,

Badalyan,

Khomenko

et al. 2024

Materials

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This paper presents the results of the study of stress relaxation fields, deformation, and temperature of the system of nanostructured multilayer coatings. In the work, a nonlinear relationship between strain and stress was used to take into account nonlinear effects in the mechanism of nanostructure formation. The paper assumes that a friction surface is provided by the self-organization of shear components: both stress and strain on the one hand, and temperature on the other. The studied objects are described in the adiabatic approximation, taking into account the fact of the evolution of stresses and strains. With the help of phase portraits of the system, the dependence of the deformation processes on the stresses arising in the system without coating and with coating is shown. It is shown that the rate of change of deformation depends on the characteristics of the mechanical impact on the coating and on the amount of stress and deformation. A conclusion is drawn regarding the transition process in the presence of two regions (Hooke and plastic deformation) in the corresponding phase portrait of the strain–stress field of the system. The results of the work can be used to determine the effective parameters of a coating in the analysis of experimental time dependences of stresses.

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Section: Basic Equationsmentioning

confidence: 99%

“…At the phenomenological level, such behavior is described by a system of differential equations that contain nonlinear terms. The solution of such systems is effectively represented graphically in the form of phase portraits [35][36][37][38][39].…”

Section: Determination Of Coordinates Of Special Points Of the Systemmentioning

confidence: 99%