Materials Literature
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On the basis of the exact solution of the two-dimensional Poisson equation, a new analytical subthreshold behavior model consisting of the two-dimensional potential, threshold voltage, and subthreshold current for the single-halo, dual-material gate (SHDMG) silicon-on-insulator (SOI) metal oxide semiconductor field ef…
The Fe-Al systems in the concentration range from 29 to 44 at. % Al are investigated in terms of the density functional theory. It is shown that, in the system under consideration, there can exist three magnetic states with close energies. Two of these three magnetic states have collinear magnetic moments (the ferroma…
We grew rhombohedrally distorted BiFeO$_{3}$and hexagonal YMnO$_{3}$thin films on Pt/TiO$_{2}$/SiO$_{2}$/Si substrates via RF magnetron sputtering technique in a pure oxygen atmosphere. BiFeO$_{3}$and YMnO$_{3}$targets were self-made by the usual solid-state reaction method. We investigated the effects of deposition t…
The "Offshore Electrolysis Plant" has been proposed to prevent a fuel crisis and global warming simultaneously and to make a peace loving, sustainable society without resource wars. This on-site electrolysis plant is located on the raw material called "seawater" and is equipped with a windpower station. Utilizing offs…
Tunneling magnetoresistance (TMR) characteristics of magnetic tunnel junctions with a Co2FeSi electrode and an MgO crystalline barrier have been investigated. Co2FeSi Heusler alloy electrode grown on Cr-buffered MgO(100) substrate starts to have anL21structure when annealed above 420degC. In the cases of CoFeB/MgO/Co2…
The traditional theory of Debye heat capacity with a single free parameter (characteristic temperature θD) is extended to fractal spaces taking into account two more “latent” parameters contained in it, viz., the phonon spectrum dimension d f and dimension d determining the geometry of the skeleton of the structure un…
The accumulation of helium in austenitic steels upon the irradiation in research and power reactors has been studied. It has been shown that the application of a high-sensitive mass-spectrometric method of determining integral accumulation of helium makes it possible to obtain reliable correlation dependences between…
NiFe2O4nanoparticles with average sizes of 3.5(plusmn0.4) nm, 5.0(plusmn0.5) nm, and 19(plusmn1.1) nm embedded in the SiO2matrix were prepared by the sol-gel method. Size and temperature dependence of magnetic relaxation of the ferrite nanoparticles were studied. A classical logarithmic distribution function was consi…
(Mn, N)-codoped TiO2 films have been fabricated by plasma assisted molecular beam epitaxy. X-ray diffraction and x-ray photoelectron spectroscopy studies indicate the incorporation of both Mn and N ions into the TiO2 lattice but without Mn metal clusters. Ferromagnetism with clear hysteresis at 300 K is observed in (M…
This paper presents the results of the revision of the subclass Monilifera (Pogonophora) based on an analysis of all currently known morphological features. The most important diagnostic characters of Monilifera are the presence of two tentacles without pinnules, a neurotroch on the forepart, a fragmented bridle, a tr…
A new ldquoexpandedrdquo negative-refractive-index transmission line (NRI-TL) metamaterial unit cell is introduced. This expanded unit cell minimizes the number and reduces the size of the shunt inductors needed to achieve a certain phase-shift per unit length. As in standard NRI transmission lines, both backward and…
In this work, we proposed a resonant half-cylindrical far field superlens by combining the strong hyperbolic dispersion relationship with the coupled Fabry–Perot cavities. The half-cylindrical far field superlens consisting of the resonant and nonresonant Ag/GaP multilayer are simulated and compared under red light il…
Large-quality, well-crystallized growth of ZnO nanowires was done via non-catalytic thermal evaporation process on silicon substrate only by using metallic zinc powder and oxygen as source materials for zinc and oxygen, respectively. The electrical properties of the as-grown ZnO nanowires were examined by fabricating…
Abstract Seawater desalination based on the reverse osmosis process requires a variety of hydraulic systems. The material concepts of these hydraulic systems are designed to reliably resist the corrosive properties of seawater and brine as well as the tribological loads. Strong tribological loads typically occur durin…
The molecular and crystal structures of two p -alkoxybenzylidene)- p ′-toluidines C 2 H 5 O-C 6 H 4 -CH=N-C 6 H 4 -CH 3 ( 1 ) and C 4 H 9 O-C 6 H 4 -CH=N-C 6 H 4 -CH 3 ( 2 ) are determined by X-ray diffraction. Crystals 1 and 2 contain four and two crystallographically independent molecules, respectively. In 1 , the g…
In this paper, single-walled carbon nanotubes (SWCNTs) are studied through molecular dynamics (MD) simulation. The simulations are performed at temperatures of 1 and 300 K separately, with atomic interactions characterized by the second Reactive Empirical Bond Order (REBO) potential, and temperature controlled by a ce…
As an efficient and cost-effective method to synthesize nanomaterials, the hotplate technique has been reviewed in this article. Systematic studies have been carried out on the characterizations of the materials synthesized. In addition to the direct preparation of nanomaterials on metals, this method has been extende…
The present study was devoted to the morphology, taxonomy, and distribution of Coscinodiscus jonesianus (Greville) Ostenfeld and C. commutatus Grunow. As far as was determined there were no previous studies of the fine morphology of the latter taxon. Therefore, this analysis presents differences between the taxa and r…
High density zinc oxide nanorods with uniform size were synthesized on (100) silicon substrate by vapor-phase transport method. The scanning electron microscopy images reveal that the nanorods have an average diameter of about 400 nm. The X-ray diffraction pattern demonstrates the wurtzite crystalline structure of the…
Magnesium oxysulphate cement (MOC, Magnesia / Sorel’s Cement), discovered by Sorel S.T. in 1867 and has versatile cementing characteristics. It is prepared by the reaction of magnesium sulphate with magnesia in aqueous solution. Dolomite is used as inert filler to absorb the heat evolved during the exothermic formatio…