Dimension effect in the layered structures: ferroelectric - normal metal and ferroelectric - HTSC

Modified form of differential equation describing the dynamic polarization distribution in ferroelectric layer is proposed. Distribution of polarization and electrical field in ferroelectric layer is identified. The expression is obtained for dielectric permittivity for the layer averaged by thickness both in case of normal metal electrodes (zero boundary conditions for polarization) and in case of electrodes of metal-oxide high-temperature super conductor with assumed availability of ferroelectric properties. The dimension effects in the second case seem to be significantly suppressed. 16 refs.; 3 figs