SIZE EFFECTS OF DIELECTRIC RESPONSE OF THIN FILM OXYGEN-CONTAINING FERROELECTRIC STRUCTURES

Zubko S.P

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The model of size effect of dielectric response in thin perovskite ferroelectric films has been described in ferroelectric and paraelectric states. Size effect is manifested in the reducing the dielectric constant and shifting the phase transition temperature in comparison with bulk material. One of the reasons of size effect is the correlation of the ferroelectric polarization and freezing of the polarization on the film surface (zero boundary conditions). The article contains description of models of dynamic and spontaneous polarization as a function of temperature and spatial coordinates. The critical sizes of ferroelectric sample have been introduced. The film thickness at which it loses ferroelectric properties and the thickness at which the dielectric response of the film begins to depend on its size are determined by the correlation parameter of the material. The appearance of the size effect in the film depends on the orientation of the polarization vector.

Библиографическая ссылка

Зубко С.П РАЗМЕРНЫЕ ЭФФЕКТЫ ДИЭЛЕКТРИЧЕСКОГО ОТКЛИКА В ТОНКОПЛЕНОЧНЫХ КИСЛОРОДСОДЕРЖАЩИХ СЕГНЕТОЭЛЕКТРИЧЕСКИХ СТРУКТУРАХ // Научное обозрение. Физико-математические науки . 2020. № 1. С. 31-31;
URL: https://physics-mathematics.ru/en/article/view?id=33 (дата обращения: 24.06.2026).