Materials Literature
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We have newly developed an x-ray photoemission electron microscope (XPEEM) which uses both soft x-rays and hard x-rays at the undulator beam line BL15XU in the synchrotron radiation (SR) facility SPring-8 to observe various practical materials. In combination with an energy analyzer and high brilliant x-ray source, th…
In water tap production 0.5 mm of material needs to be ground off from the surface of LPDC (Low Pressure Die Casting) brass castings in order to remove the defects deteriorating the quality of later applied coating. In order to minimize the amount of removed material the causes of these defects need to be discovered a…
An unusual compound, H5[(C6NO2H4)4(H2O)15Nd3][IMo6O24]2·13.5H2O (1) has been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), and single crystal X-ray diffraction. Compound 1 consists of two [IMo6O24]5− units joined by a trinuclear neodymium-pyridine-4-carboxylic…
Development of superprotonic conductors of inexpensive and environmentally stable inorganic materials is important for clean energy fields such as H2-O2 fuel cells and hydrogen energy technology. We will show that gypsum (CaSO4·2H2O), normally an insulator, can be easily converted into a superprotonic conductor by a n…
The possibility of raising the yield of stabilized polymeric sulfur by rapid cooling of melts in the presence of previously unstudied complex systems including α,α,α,α′,α′,α′-hexachloro- p -xylene was examined.
The interaction of binary solid solutions with binary gallium eutectics is studied in situ by X-ray diffraction using synchrotron radiation to reveal the sequence of phase formation for the elements that leave a solid solution and a eutectic during the formation of the first intermetallic phase. A comparison of the ch…
The Raman and photoluminescence (PL) spectra of nanocrystalline zinc oxide produced by mechanochemical synthesis were measured using a pulsed nitrogen laser (337.1 nm) and xenon lamp (360 nm) as excitation sources in PL measurements and a cw Nd:YAG laser in Raman measurements. PL was observed in the range 400–800 nm.…
Foundations of cocarbonization of a series of carbon-chain and heterochain polymers in the solid phase and in solution were considered; the concept of this process was formulated. The temperature and kinetic parameters of the maximal thermal activity were determined. The possibilities of intermolecular interactions of…
Complex rare-earth molybdophosphates of sodium and potassium (Na 2 Yb(PO 4 )(MoO 4 ) ( I ) and K 2 Yb(PO 4 )(MoO 4 ) ( II ) are synthesized by solid-phase reactions at 600°C (for I ) and 750°C (for II ). The molybdophosphates are characterized using powder X-ray diffraction, laser second harmonic generation (SHG), IR…
The conditions of formation of local states in the energy spectra of semi-infinite carbon nanotubes with regularly arranged atoms adsorbed on the outer surface are studied in the π-electron approximation. The influence of the adsorption type (physical and chemical), the donor-acceptor properties of adsorbed atoms, the…
MnAs grows either with the (1100)prism-plane on GaAs(001), (113)A and (110) or the (0001) c-plane on GaAs(111)B substrates. The strain state of the films determines the phase coexistence of ferromagnetic α- and paramagnetic (3-MnAs and their distribution in self-organized structures. The mismatch accommodation mechani…
This study describes facile methods based on sol-gel processing for the formation of robust thin films that incorporate phospholipid bilayer membranes and transmembrane proteins as multilamellar assemblies in cross-linked silica matrices. Transmission electron microscopy and x-ray diffraction were used to examine the…
Abstract In this paper, the influence of nanosilica particles on hysteresis and stress induced crystallization of natural rubber compounds is described. For this purpose a newly developed uniaxial stretching system that monitors birefringence, true stress and true strain was used in real time while stretching and retr…
Mixed-ligand binuclear and mononuclear europium carboxylate complexes with nitrogen-and phosphorus-containing neutral ligands have been studied by luminescence and X-ray photoelectron spectroscopy. The coordination of neutral ligands through the nitrogen donor atom leads to an increase in electron density at the Eu 3+…
This study aims to develop a realistic mathematical model of fabric. In contrast to other studies on fabric modeling as a deformable surface, the model described in this article takes into account the geometry of the object. Moreover, it integrates the nonlinear phenomena of the dynamic behavior of material. As input…
Abstract Chemical reactions in the vapor phase during metalorganic vapor phase epitaxy growth of ZnO are investigated with in‐situ monitoring using Fourier transform infrared spectroscopy. Diethylzin (DEZn) and nitrous oxide (N 2 O) were used for zinc and oxygen source, respectively. DEZn reacts first with oxygen atom…
The anisotropy of dendritic structure is characterized in this paper. The direction of move of liquid/solid interface influence the velocity of the melt flow. In the course of the experiments the liquid/solid interface was moved in three different directions: i) at right angles to the direction of gravity vector, ii)…
Die Materialbeanspruchungsanalyse nach Nierlich mittels Röntgenbeugung stellt ein wichtiges physikalisches Untersuchungsverfahren zur Bewertung der Werkstoffanstrengung und Lebensdauerabschätzung von Wälzlagern und anderen hoch beanspruchten Maschinenelementen dar. Die Methode wird vorgestellt und zur Auswertung von A…
Abstract On a microscopic scale, deformation twinning is carried by the motion of twinning disconnections. A disconnection is an interfacial line defect characterized by a Burgers vector, a line vector, and a step vector. The Burgers vector (dislocation component of the disconnection) carries the deformation while the…
Abstract Well-shaped, small single crystals of the NdNiO 3 perovskite were grown under high oxygen pressure conditions in a belt-type press at 4 GPa. The reaction took place in sealed platinum capsules in the presence of KClO 3 as oxidizing agent. It seems that the choice of hydroxides of the involved cations as precu…