Materials Literature
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Abstract The relationship of the micromagnetic structure, the contributions of various crystalline phases and hysterons obtained by the first order reversal curves (FORC) method in sintered (NdDy)(FeCo)B magnets is discussed. The distribution map of parameters of magnetic hysteresis partial loops that allows the separ…
Abstract The most important properties of soft magnetic materials are peak induction and magnetic losses, determining the size and efficiency of electric devices. Conventional soft magnetic materials are not suitable for the construction of miniaturized magnetic cores. Soft magnetic composites meet miniaturization req…
Abstract Bis (ethylenedioxy)‐1,4,5,8‐tetraselenanaphthalene (BEDO‐TSeN) has been synthesized by the reaction of diselenolate with tetraiodoethylene or tetrabromoethylene. The structure of BEDO‐TSeN was determined by X‐ray analysis, and its π‐donor property was estimated by MO calculations and determined by CV analysis.
The electrochemical property of electrode materials greatly depends on their morphologies. This report introduces a novel and facile synthesis method for polyaniline (PANI) nanotubes from one-step synergistic polymerization of aniline and acrylic acid in an aqueous solution induced by the addition of ammonium persulfa…
Abstract High temperature behavior of sodium–aluminum fluorophosphate glass—a potential matrix for immobilisation of waste salt electrolyte from pyrochemical reprocessing of irradiated nuclear fuel (INF) has been studied. The glass crystallizes between 430 and 640°C with formation of phosphate phases, which dissolve a…
Polysilanes, which have silicon-silicon bond chain, have attracted considerable attention due to theirusefulness such as precursors for thermally stable ceramics materials, microlithography and so on. Osaka GasChemicals has found that the reduction of dichlorosilane with Mg metal in the presence of LiCl and Lewis acid…
In this study, the hot deformation processing map of AISI 304 austenitic stainless steel in two initial grain sizes of 15 and 40 μm was investigated. For this purpose, cylindrical samples were used in the hot compression test at the temperature range of 950-1100 °C and the strain rate of 0.005-0.5% s-1. At first, the…
Методом растровой и просвечивающей электронной микроскопии выполнено исследование эксплуатационного разрушения диска компрессора из титанового сплава ВТ8, работающего в наземной ГТУ. Установлено, что разрушение развивалось от фаски с частичным нанесением серебряного покрытия, по хрупкому механизму, с формированием фас…
Abstract— Two-dimensional (2D) semiconductor structures of materials without inversion center (e.g. zinc-blende AIIIBV) possess the zero-field conduction band spin-splitting (Dresselhaus term), which is linear and cubic in wavevector k, that arises from cubic in k splitting in bulk material. At low carrier concentrati…
The sodium-iron phosphate maricite-NaFe 0.9 Mn 0.1 PO 4 was synthesized using the ball mill method. The crystal structure and magnetic properties of the prepared materials were studied using X-ray diffraction (XRD), vibrating sample magnetometer (VSM), and Mössbauer spectroscopy. Structural refinement of maricite-NaFe…
Two new nano particles of copper (II) and nickel (II) complexes, [Cu(cd5Clsalen)] (1) and [Ni(cd5Clsalen)] (2) with unsymmetrical tetradentate Schiff base ligand cd5Clsalen={methyl-2-[N-[2-(2-hydroxy-5-choloro-2phenyl) methylidynetrilo]ethyl}amino-1-cyclopentenedithiocarboxylate, were synthesized by hydrothermal metho…
The experimental complex "Tunable colloids" is developed for particle-resolved studies of generic processes in classical condensed matter. The complex consists of an experimental setup, generating a rotating electric field for a controlled self-assembly of colloidal suspensions (with tunable interactions induced by ex…
Abstract In present study, dynamic mechanical properties of hemp nanofibre reinforced epoxy composite were carried out. The hemp nano composites were fabricated by hand lay-up technique followed by static compression using varying wt. % (1 to 5 wt. %) of nanofibres. Dynamic mechanical properties were studied in terms…
It is well known that an [Formula: see text]-dimensional torus [Formula: see text] is Hamiltonian. Then the torus [Formula: see text] contains a spanning subgraph which is 2-regular and 2-connected. In this paper, we explore a strong property of torus networks. We prove that for any even integer [Formula: see text] wi…
In this article, An elastostatic problem with two symmetrically located edge cracks and a centre crack in an orthotropic elastic material under normal loadings is considered. Two harmonic functions are considered which are expressed in terms of displacement of stress and component of axes. The problem is reduced into…
In this article, the formation of the production of high-efficiency photovoltaic devices, solar cells is considered. Increased efficiency is achieved through the use of carbon nanomaterial. The use of carbon nanotubes increases the efficiency of solar photovoltaic due to efficient charge transfer in the device. Effect…
Silver-carbon films (Ag-C), rich in silver, deposited by DC magnetron sputtering from a silver target (Ag) into silicon substrate (100) in atmosphere of argon/acetylene plasma, have been studied in function of the substrate temperature (as-deposited, 200°C and 300°C). The Ag-C films were obtained using an acetylene ga…
In this paper we have investigated light-emitting diodes based on GaAs/InGaAs heterostructures grown on a Ge/Si(100) substrates. Ge layers were deposited by the "hot wire" method, and A3B5 layers were grown by the low pressure MOCVD. Structures were investigated by the methods of electroluminescence spectroscopy and e…
Abstract The efficiency of enzymatic depolymerization in a membrane reactor was investigated. The model analysis was performed on bovine serum albumin hydrolysis reaction led by three different enzymes, for which kinetic equations have different forms. Comparing to a classic reactor, the reaction yield turns out to be…
The analytic solution of the problem of propagation of eigen modes in planar periodically inhomogeneous optical waveguides based on alternating dielectric and chiral (or with optical activity) layers is examined. The method is based on the solution of the Hill equations for the electric field strengths of modes with c…