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Article
Flying apparatus DC–DC starter-generator converter based on switching capacitor structures
A universal starter-generator system, designed with the use of modern element base, for a flying apparatus corresponding to the concept of “more electrical aircraft” is considered. In order to ensure the opera...
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Article
Composition-sensitive growth kinetics and dispersive optical properties of thin HfxTi1−xO2 (0 ≤ x ≤ 1) films prepared by the ALD method
The optical quality HfxTi1−xO2 films with a wide range of the Hf/Ti ratio were prepared on Si (100) substrates by the ALD method with the use of tetrakis(ethylmethylamido)hafnium(IV) (Hf(NC2H5CH3)4, TEMAH) and ti...
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Article
Precise sputtering of silicon dioxide by argon cluster ion beams
In this work, the sputtering yields of SiO2 by the argon cluster ion beam with incident angles 0° and 45° have been studied experimentally. The kinetic energy of the primary cluster ions was in the range of E = 5...
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Article
Synthesis of Polycrystalline CdSiP2 in a Gradient Temperature Field
A procedure for the synthesis of a CdSiP2 compound from the initial elementary components in a gradient thermal field has been developed. The phase and chemical composition of the synthesized and recrystallized m...
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Article
Synthesis of Y3Al5O12:Ce3+ phosphor in the Y2O3–Al metal–CeO2 ternary system
Garnet phosphor Y3Al5O12:Ce3+ is prepared in the Y2O3–Al metal–CeO2 ternary system by the solid-state reaction method in the air. For the first time, metal Al is used as a source of aluminum for the reaction inst...
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Article
Optical Properties of TiO2 Films Deposited by Reactive Electron Beam Sputtering
Titanium dioxide (anatase, a-TiO2) films have been prepared by electron beam sputtering of a TiO2 target in reactive atmosphere and their structural, microstructural, and optical properties were evaluated by refl...
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Article
Preparation and thermo-physical parameters of diamond/W,Cu heat-conducting composite substrates
Diamond/W,Cu heat-conducting composite shims were produced by the multistep route. Initially, the surface of the microdiamonds ∼200 μm in size was covered by a W/WC layer using the deposition from a vapour of ...
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Article
Direct nitridation synthesis and characterization of Si3N4 nanofibers
Silicon nitride nanofibers were prepared by direct nitridation of silicon powder, with an iron catalyst, under nitrogen flow. The as-prepared nanofibers have the α-Si3N4 structure. Micromorphology and phase compo...
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Article
Effects of process parameters on the optical constants of highly textured V2O5 thin films
The optical properties of the highly-textured V2O5 thin-films grown on Si(100) by sputter-deposition at various oxygen reactive-pressures were investigated in detail. The profiles of the optical constants, namely...
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Article
Physical and dispersive optical characteristics of ZrON/Si thin-film system
To date, the complex evaluation of physical and dispersive optical characteristics of the ZrON/Si film system has yet been reported. Hence, ZrON thin films have been formed on Si(100) substrates through oxidat...
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Article
Sphalerite Framework in Polar Sulfides
The basic sphalerite framework has been revealed in complex sulfide minerals: galkhaite, stalderite, aktashite and other sulfide compounds. It has been shown that the noncentrosymmetric sphalerite framework is...
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Article
Stability of the (0001) surface of the Bi2Se3 topological insulator
The inertness of the cleaved (0001) surface of a Bi2Se3 single crystal to oxidation has been demonstrated using X-ray photoelectron spectroscopy, as well as atomic-force and scanning tunneling microscopy and spec...
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Article
Crystal structure-property relationship as a factor in the refinement of structural physical data
On the example of noncentrosymmetric (NCS) crystals of phosphates, the composition-structure-property relationship is systematized, and a set of phosphate structures is plotted on the plane of oxide bond lengt...
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Article
Growth and optical parameters of GaSe:Te crystals
A series of technological experiments on the growth of GaSe:Te single crystals by the Bridgman–Stockbarger method is performed. Surface micromorphology and mechanical properties of crystals with different dopi...
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Article
High-accuracy contactless method for determination of chemical composition of lithium niobate crystals by their birefringence
A high-accuracy method for determining the chemical composition of non-stoichiometric lithium niobate crystals is proposed based on precise measurements of birefringence of thin substrates using the laser elli...
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Article
Interrelation of the macrostructure and microstructure with the nonlinear optical properties of iodate and titanate crystals
Noncentrosymmetric crystals of iodates and titanates have been systematized, and the principles of the design of new nonlinear optical materials by means of revealing empirical composition-structure-property r...
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Article
Optical properties of the HfO2 − x N x and TiO2 − x N x films prepared by ion beam sputtering
Optical characteristics of the HfO2 − x N x and TiO2 − x N x films obtained by reactive ion be...
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Article
Morphology and structure of hexagonal MoO3 nanorods
We have prepared h-MoO3 nanocrystals in the form of well-faceted straight hexagonal rods with an aspect ratio of l/d ≃ 60. The nanocrystals have been characterized by x-ray diffraction, scanning and transmission ...
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Article
Core level spectroscopy and RHEED analysis of KGd0.95 Nd0.05(WO4)2 surface
A study of the surface structure and electronic properties of (010) KGd0.95Nd0.05(WO4)2 (Nd:KGW) using RHEED analysis and XPS is presented. It is shown that Nd do** has a negligible effect on the core level...
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Article
Optical characteristics of thin rutile films on fused quartz substrates
Polycrystalline rutile films are synthesized on fused quartz substrates by the method of thermal oxidation of a titanium metal layer in air at 800°C. The optical parameters of the TiO 2 fi...
