[en] The results of the study of the bias voltage effect on the structure, texture and residual stresses of Ta-coatings deposited using an inverted magnetron on a copper substrate are presented. It is shown that variations in residual stresses are non-monotonic, which is determined by the complex effect of the bias voltage on the process temperature, which affects both the formation of mechanical and thermal stresses and their partial relaxation. (paper)

[en] 3-Aminothieno[2,3-b]pyridine-2-carboxylic acid esters readily reacted with 3,5-dimethyl-1-(cyanoacetyl)-1H-pyrazole to give previously unknown N-(thieno[2,3-b]pyridin-3-yl)cyanoacetamides. Reactions of the latter with 2-(arylmethylidene)malononitriles were nonselective, and mixtures of different heterocyclization products were generally formed. The cyclization of ethyl 4,6-dimethyl-3-[(cyanoacetyl)amino]thieno[2,3-b]-pyridine-2-carboxylate afforded 2,4-dihydroxy-7,9-dimethylthieno[2,3-b : 4,5-b′]dipyridine-3-carbonitrile whose tautomeric equilibrium was studied by DFT quantum chemical calculations. In silico analysis of biological activity of the synthesized compounds was performed.

[en] The paper presents the study’s results of the composition, structure and morphology of Ti-Pb coatings formed by magnetron co-bombarded with the help of ions. The effect of the relationship between magnetron currents on the structure of Ti and Pb coatings is shown. (paper)

[en] The combination of ion-beam spraying and raster electronic microscopy allows to receive images of sections of defects of the growth nature origin in epitaxial films on GaN basis with nanodimensional permission, to carry out their analysis and classification irrespective of conditions of receiving. Results of application of the specified methods for the analysis of technological operations when forming the microwave transistors are considered: formations of locks, receiving of holes and drawing of contacts. (paper)

[en] A method of manufacturing double-lattice magnetoplasmonic crystals with the structure (Au/BIG)², in which the plasmon gold lattices are displaced relative to each other by half a period, has been presented. Gold films with thicknesses of about 40 nm have been formed by the ion-beam sputtering–deposition method, while the adhesive properties of the films allow the dimensional etching by a sharp-focused ion beam. It has been shown that the formation of the second plasmon lattice located on top of the 100 nm thick garnet layer allows the preserving of the periodicity of the first Au lattice. However, there is a significant influence of diffusion spreading on the lower lattice material, which leads to a decrease in its density. The dependence of the intensity magnetooptical effect in the geometry on the transmission as a function of the thickness of the upper lattice and presence of an additional layer of Ta₂O₅ has been studied.

[en] 

Abstract—

Scanning electron microscopy results demonstrate that coupling of the ferromagnetic and ferroelectric components in a Co/PbZr_0.45Ti_0.55O₃/Co thin-film structure, resulting in a considerable magnitude (several to tens of mV/A) of a low-frequency magnetoelectric effect at room temperature, extends to a depth of up to 20 μm. This makes it possible to optimize the thickness of the PbZr_0.45Ti_0.55O₃ substrate and enhance the performance of such structures for use as sensing elements in information storage/processing devices and magnetic field sensors based on the magnetoelectric effect.

[en] Electron field emission properties of nanocrystalline graphite (NCG) films, grown by plasma enhanced chemical vapor deposition method on conductive Si substrates without using of any catalyst, were investigated. Current-voltage characteristics were measured in pulse-periodic regime. It was shown that grown NCG films can operate at field emission current density up to 10 A/cm². It was found that NCG films contain, along with the normally oriented to the substrate nanoflakes, carbon whiskers consisted of graphene nanoribbons and nanowires with length considerably higher than of the nanoflakes.