Materials Literature
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A new type of organic-inorganic hybrid materials based on cadmium iodide (CdI2) and phenethylamine (PEA) has been synthesized and characterized. The reaction of CdI2 with PEA in a 1:2 molar ratio yields a four-coordinate hybrid material CdI2(PEA)2 (1) with extended 1D (CdI2)n chains, while the reaction of CdI2 with PE…
In this study, we tried to fabricate the nanostructured bulk copper alloys by a severe plastic deformation process. The sheets of copper alloys (OFC, PMC90, and DLP) were heavily deformed to an equivalent strain of 6.4 by the accumulative roll-bonding (ARB) process. The microstructure and the mechanical property of th…
The report summarizes peculiarities of synthesis and luminescence properties of porous silicon, porous anodic alumina and artificial opals with the inclusions of sol-gel derived oxides (xerogels), doped with Er, Tb, and Eu. Origin of strong luminescence of lanthanides from xerogels in mesoporous matrices is discussed.
Abstract Thermodynamic analyses of surface pressure‐area (Π‐A) isotherms and Brewster angle microscopy (BAM) reveal that poly(ε‐caprolactone) (PCL) with a weight average molar mass of M w = 10 kg mol −1 and polydispersity index of M w / M n = 1.25 and poly( t ‐butyl acrylate) (PtBA, M w = 25.7 kg mol −1 ; M w / M n =…
The structure of an ordered, ultrathin Al 2 O 3 film grown on a NiAl(110) single-crystal surface and its interaction with D 2 O were studied by low-energy ion scattering spectroscopy (LEISS), X-ray photoelectron spectroscopy (XPS), temperature programmed desorption (TPD), and infrared reflection absorption spectroscop…
Polyamide 66(PA66)/montmorillonite nanocomposites were prepared via direct melt compounding. The nonisothermal crystallization of PA66 and PA66/MMT nanocomposites were investigated by differential scanning calorimetry. The results show that MMT platelets play a competing role in the crystallization process of nylon 66…
The room-temperature (RT) crystal structure of the colbaltocinium salt of the S = 1/2 nickel dithiolene complex [Ni(tfadt) 2 ] –• (tfadt, 2-trifluoromethylacrylonitrile-1,2-dithiolate) is characterized by uniform one-dimensional spin chains of radical anions, separated from each other by the [Cp 2 Co] + cations. Both…
Abstract In this study corrosion behavior of low alloy steel, in the presence of anaerobic sulfate‐reducing Desulfotomaculum sp. which was isolated from an oil production well, was investigated. In order to determine corrosion rates and mechanisms, mass loss measurements and electrochemical polarization studies were p…
Silver/polypropylene (PP) nanocomposites containing silver nanoparticles smaller than 10 nm were prepared using a new synthetic method. AgNO3 crystals were dissolved into hydrophilic domain of polyoxyethylene maleate-based surfactant (PEOM), which gives self-assembly nano-structures. The AgNO3 in the nano-domains of P…
Abstract The preparation and structural characterization of a novel molecular solid Brønsted acid based on the Dawson-type sandwich polyoxometalate (POM) are described. The free-acid form of POM, i.e., 8H+-heteropolyacid with the formula H8[Ti2{P2W15O54(OH2)2}2]·31H2O (1) (H8[1a]·31H2O), was prepared by using three di…
Owing to the narrowly distributed density of states, even small amounts of chemical impurities can cause relatively distinct midgap states and significantly reduce the charge carrier transport in liquid crystals. However, the effects of chemical impurities on charge carrier transport have not yet been explained suffic…
Based on the measurements of the dependences of the coercive force of ferromagnetic steels on elastic tensile stresses, its minimum values and the positions of these minima have been found. Using the method of thermal neutron scattering, it has been experimentally proved that the stresses at which the coercive force i…
Abstract A mean field model is developed to predict how polymer–polymer miscibility changes if polymers are functionalized with noncovalent, reversibly binding endgroups. The free‐energy model is based on the Flory–Huggins mixing theory and has been modified using Painter's association model to account for equilibrium…
The mechanosynthesis process has been applied in theLaFe11.4Si1.6 compound to reduce the undesirable segregated rich-Fe phases that impair its application as a solid magnetic refrigerant. The influence of La substitution (5 at. %) by Y or Gd atoms on the magnetic and magnetocaloric properties has been also studied. Y-…
The structure and properties of metal-matrix Al/Al-Cu-Fe-quasicrystal composites produced by compacting mechanically alloyed powders have been studied. An increase in the time of mechanical alloying was found to lead to an increase in the microhardness. Compression tests showed that the failure of samples occurred via…
Fast charging–discharging performances of well-dispersed RuO 2 nanoparticles (NPs) on N-doped carbon nanotubes (CNTs) have been demonstrated. As regards the structural properties, the N 1s x-ray photoelectron spectroscopy spectrum shows two characteristic bonding peaks of N within CNTs. Cross-sectional scanning electr…
We study the X-band EPR spectra of Co2+ in single-crystalline Zn1−xCoxO (x=0.001–0.075) thin films grown by plasma-assisted molecular beam epitaxy. By analyzing the EPR linewidth behavior we argue that the exchange-narrowing model, usually applied to Mn-based II-VI DMS, fails here and that a combined effect of exchang…
Plasma methods for processing spent nuclear fuel are analyzed. It is shown that, by ICR heating in a nonuniform magnetic field, the energy of the heated ash ions can be increased substantially, while nuclear fuel ions can be kept cold. Two methods for extracting heated ash ions from a cold plasma flow are considered,…
Comparative investigations of the nuclear magnetic resonance and nuclear spin-spin relaxation residents of Mn55 nuclei of nanopowders of the manganite La0.7Sr0.3MnO3 with different particle sizes 50–200nm (NP1) and 12nm (NP2) have been performed. It has been found that two local ferromagnetic phases (FgM and FbM) with…
Electron beam induced deposition (EBID) is of interest as a damage-free and resist-less means of incorporating nonconventional materials such as polymer fibers, nanowires, and carbon nanotubes into integrated circuits. A novel inorganic platinum precursor—Pt(PF3)4—is investigated in this work, as it has previously bee…