The analysis was obtained by atomic force microscopy method of topograms nanostructures on the surface of vapor-phase condensation of SnTe: Bi, thet were opened deposited by evaporation in a vacuum on substrates of ceramics. With the distribution of polar and azimuthal angles of the normal vector to the surface elements of condensate was found objects with flat faces with by dominant orientation in space and by symmetry.
This is a study of atomic force microscope images of crystalline SnTe condensed on a ceramic glass (sitall) substrate. For the first time, two-dimensional forward and reverse Fourier transforms over the intense frequencies are used sequentially to analyze the data. A hidden periodicity in the position of objects on the surface of the film is discovered and confirmed by the two-dimensional autocorrelation function of the image. The one-dimensional Fourier transform is applied to the distribution of the azimuthal angle of the normal vector to the surface. It is found that the condensate surface has an invariant set of symmetry elements, although the dimensions of the surface objects depend monotonically on the deposition time. An approximation is obtained for the distribution of the polar angle of the normal vector using a unique single-mode function whose form is independent of the deposition time.
The aim of this work was to create and study of ferrite nickel-cobalt powders, using sol-gel technology with participation of auto-combustion. Dependence of the initial permeability from the degree of substitution of cobalt cations on nickel cations is obtained. It is revealed that the crystallite size has a significant influence on the magnetic properties of the samples. With decreasing of crystallite size of nickel-cobalt ferrite Curie temperature decreases. It is shown that the smaller the particle size, the greater the thickness of the surface layer with significant violations of magnetic structure.
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