OAK jurnallaridan yig‘ilgan 129907 ta ilmiy maqola: sarlavha, mualliflar, annotatsiya, kalit so‘zlar, DOI va tayyor iqtibos formatlari.
The possibility and prospects of using of granular silicon as a material for the manufacture of thermal energy converters are discussed. It is shown that granular silicon particles mechanically brought into contact with…
In this work the energy distributions of Ar+ ions scattering by the surface InP(001) in low indexing directions at the grazing incidence of bombarding ions are presents. In energy distributions the peaks which…
In the paper, the effect of disordering of the surface layers on the electronic and optical properties of single-crystal silicon has been studied. An analysis of the photoelectron spectra shows that with complete…
SinOm+ cluster ions sputtered from Si surface by Xe+ under O2 flooding have been investigated using double focusing ion microanalyzer with reverse geometry. Proposed structural schemes of the cluster cations have been…
The nonvalent interaction of fullerenes Cn (n = 20, 24, 26, 28, 30, 32, 36, 50, 60) with defect-free graphene has been studied using computer simulation methods. The adsorption energies and equilibrium distances of…
Изучены возможные механизмы локализации носителей в неоднородных дырочно-легированных купратах и металл-диэлектрик переходы (МДП) в них. Показано, что диэлектрическое состояние легированных купратов отличается от…
In the article, new version of photoreceivers of autonomous type is discussed. The electro-optical and magneto-optical properties of photoreceiver of the generator type working with light power are described. The…
The influence of the impurity of erbium, lanthanum and oxygen on the processes of formation of radiation defects in silicon was studied by method of deep level transient spectroscopy. It is established that the presence…
In the present paper the numerical value of the critical temperature of fullerene C28 has been determined on the basis of electron-phonon interaction potential.
Results of researches on radiation monitoring of oil and gas production enterprises of limited liability company "Gazlineftgasdobicha" (Gazli town, Uzbekistan) and JV «Uz-Kor Gas Chemical» LLC, «Ustyurt Gas and Chemical…
The work is devoted to study of the magnetic properties of compounds based on double vanadates of rare earth elements. It is shown that the presence of vanadium V+4 in compounds causes the paramagnetic properties. It is…
Using statistical Monte-Carlo photon-tracing method, we numerically studied focal spot structure of flat Fresnel lens. It has been shown that due to dispersion effect, focal spot structure changes considerably. In…
The influence of the Ar+ ion bombardment on composition, zone-energy parameters and optical characteristics of the CdS films has been studied. It is shown that under low dose of Ar+ ions (D ≤ 5×1015 сm−2) surface…
In the paper, the results of mathematical modeling of heterogeneous processes are presented indicating the applicability of the method of thermal-desorption surface-ionization spectrometry to determine the kinetic…
In the paper, the effect of implantation of Na+ ions with different fluences on the density of states of Si(111) valence electrons has been studied by the methods of spectroscopy of elastically scattered electrons…
The behaviour of conductivity σ and permittivity ε of metal-polymer composites comprising Ni particles dispersed in the phenilon are studied. It is found that the percolation-like behaviour of σ and ε, which is observed…
An infinite cluster topology in ceramic materials containing micro- and nanoparticles of nickel has been studied within the percolation theory. The density, volume fraction, tortuosity, volume fraction of skeleton and…
In the paper, we supplemented the data on the list of spiral galaxies [1] with the physical characteristics of the spiral galaxies halo. The halo of spiral galaxies was analyzed and the dependencies between their…
Concentration dependences of sodium dodecyl sulfate (SDS) in the concentration range of 0.005−0.03 mole (with the step of 0.001 mole) in water-ethanol solutions with a percentage ratio of 100:0, 92:8, 85:15, 70:30 were…
In connection with the lack of a satisfactory solution of the problem of globular cluster’s classification (GC) of stars we have modelled apparent density by a function with three free parameters. Basic statistical…
Defect formation on the surface of zinc oxide is investigated using the low-energy electrons by total current spectroscopy method. The formation of cation and anion vacancies on the surface is shown. The energy…
Прозрачные керамические YAG-лазерные материалы с высоким содержанием неодима исследуются для применения в преобразовании солнечной энергии в энергию лазерного излучения с помощью метода имитации трассировки лучей…
Numerical calculation was used to analyze the generation of the third harmonic in argon gas. The duration of the main pulse was chosen to be 5 fs. The role of gas ionization and high-order dispersion effects (up to…
In this paper, experimental results obtained by the method of spectroscopy of the characteristic energy loss of electrons are presented to study the composition and electronic structure of Cu(100) with silicon surface…
The technique for producing thin films of higher manganese silicide by magnetron sputtering is considered. The films were obtained on dielectric substrates: sitall СT-35-2 and mica. New results on the structural and…
It has been found that silicon with magnetic nanoclusters is basis for new photomagnetic material possessing high sensitivity both to background and to IR-light. In enough narrow interval of background illumination…
The photosensitive sandwich-structured Au-vGaAs:O-nCdS-nInP-Au semiconductor formed by vacuum deposition of thin films of cadmium sulfide and indium phosphide on a single-crystal substrate of gallium arsenide has been…
A physical model is proposed for the growth of silicon nanoparticles in the form SiH+3 →SiH03 based on the Mott-Gurney scheme. The concept of the formation of silicon nanoparticles from monosilane was…
In this work, the diffusion evolution of small electromagnet perturbations in II-type superconductors, placed in a viscous flux flow state is investigated. Analytical formulas for depth and speed of penetration of a…
A frequency shift of Mandelshtam-Brillouin components in spectra of fine structure of Rayleigh light scattering was studied in aqueous solutions of 4-methylpyridine at various concentration and temperature. In the…
The domain structure of thin single-crystal plate of the iron garnet Tb3Fe5O12 has been investigated using the magneto-optical method in the temperature range near the magnetic compensation point of this ferrimagnet Tс…
The possibility of obtaining a tungsten-substituting Ti0.70Mo0.30C cubic alloy by high-temperature sintering (at 2500 K) of powders of TiC and MoC cubic carbides mixed in appropriate proportions has been considered. An…
By computer simulation in the framework of molecular dynamics, it was found that the processes of deposition of non-hydrogenated and hydrogenated carbon atoms onto defect-free graphene depend on the hydrogenation degree…
The paper reports the formation of ZnO nanorods on the surface of a stainless steel mesh. The nanorods in cross section have a regular hexagonal shape. The length of nanorods is 2−15 microns, while a diameter varies…
Correlation between spectrum of the low temperature (T = 4.2 K) photoluminescence and anomalous photovoltages properties of oblique sputtered polycrystalline thin films CdTe, CdTe:In is discovered. In spectrum of…
By the Кubo-Greenwood formula using the Davis-Mott approximation, the spectra of infra-red absorption in amorphous semiconductors are investigated. In is shown, that occurrence of bands of strong absorption in defect…
The transparency of coefficients of the asymmetric potential barriers of a semiconductor structure consisting of alternating potential barriers and potential wells are calculated. In this case, the difference between…
Oscillations of longitudinal electrical conductivity in narrow-gap semiconductors are considered. A theory was constructed of the temperature dependence of the oscillations of the longitudinal electrical conductivity in…
We study strongly non-stationary stochastic processes which take place in the phase space of disk-like self-gravitating systems at the early stage of their evolution. Numerical calculations were carried out based on the…
On the basis of the Eliashberg equation’s system the temperature of superconducting transition of fullerene C60 is calculated. An application of the superconducting material in the field of biophysics and medicine is…
The refractometry and infrared spectroscopy methods were used to identify the concentration feature of optical characteristics of the dimethylformamide-acetonitrile binary solutions. The refractive indices of mixtures…
The article contains a hypothesis on the dominance of chemical elements of top periods of the Periodic Table in living matter. The idea is that the elements of the third and next periods of the table, in contrast to the…
Influence of gate lateral extension on the threshold voltage and short-channel effects in SOI FinFET with different shape are simulated by Advanced TCAD Sentaurus method. It is shown gate lateral extension practically…
Nuclear fuel of IRT-4M type was unloaded from the active core of the WWR-SM research reactor each time in different burn-ups. Activity of isotopes in fission products releasing from fuel assemblies were measured and…
The effect of the mass of primary ions on the formation of defects and clusters on the surface of silicon crystals using the SIMS and TRIM methods is investigated. It is shown that the formed interstitial defects on the…
The spectral dependence of MCD was measured at the temperature T=90 K and 300 K in region of λ=400−500 nm. From the experimental results the ratio of Judd`s parameters of intensity of transitions Ω6−Ω4 was found…
In the paper, a correlation between spectrum of low temperature (T = 4.2 K) photoluminescence and anomalous photovoltaic characteristics of oblique sputtered polycrystaline films CdTe, CdTe:In was discovered.
Effect of a transition amorphous layer at the interface between higher manganese silicide (HMS) Mn4Si7 and silicon doped with manganese (Si<Mn>) on the photoelectric properties of heterostructures has been…
It is found that the direct branch of I–V characteristic of the n-GaAs-р-(GaAs)1−x−y(Ge2)x(ZnSe)y heterostructures has the site of sublinear current growth with the voltage of the type V=V0exp(Jad). The concentrations…
In this paper, a dispersion of plasma fluctuations has been theoretically and experimentally studied in monocrystal samples Si(111) and Ge(111). It is shown that the dispersion depends on crystallographic orientations…