Search

The current transfer through a two-layer structure saturated with absorbed water, each layer of which consists of pressed ZrO2 nanoparticles with two sizes (10 and 20 nm), has been studied. The structure was obtained using the isostatic pressing the ZrO2 + H2O powders. The form of current–voltage characteristics inherent to the studied structure, that has diode properties with the rectification coefficient close to 3, has been explained by the appearance of a potential barrier at the interlayer boundary. [ABSTRACT FROM AUTHOR]

The dependence of surface potential value on the particle size of micro- and meso-fractions for powdered ZnS:Mn obtained using self-propagating high-temperature synthesis has been investigated. Rather good agreement of model representations for the change in the value of surface potential for the particle with its size changed due to overlapping the space charge regions from opposite surfaces within the range ~ 1 ≤ R/Leff ≤ ~ 2.2 (R, particle radius; Leff, screening length) with experimental data obtained using the method of Kelvin probe microscopy has been shown. The value of Leff for ZnS:Mn particles is estimated as approximately 30 nm. [ABSTRACT FROM AUTHOR]