Spectroscopy of Zinc Oxide Thin Films near the Fundamental Absorption Edge

Optics and Spectroscopy - The optical absorption spectra of zinc oxide (ZnO) thin films formed by reactive cathode sputtering are studied. The observed absorption of light in the region of photon...     

Investigation of Plasma Oscillations in Glasslike Dielectrics by Means of Total External Reflection of X Rays

Technical Physics - Glasslike dielectrics are investigated by methods of plasmon dispersion and asymmetry of the number of localized electrons in the region in which total external reflection of...     

Total External Reflection of X Rays from Polycrystal Solid Surface

Technical Physics - Total external reflection of X rays from surfaces of several polycrystalline metals is analyzed. The roentgenograms of total reflection and X-ray diffraction are comprehensively...     

Determination of Plasma Oscillations in Metals Using Total External Reflection of X-Rays

Technical Physics - A method to determine plasma oscillations in metals with the aid of total external reflection (TER) of X-rays is proposed. It is shown that the plasmon energy, concentration of...     

Total external reflection of X-rays from solid surfaces

Technical Physics - The reflection of X-rays from solid surfaces is comprehensively studied using the measurements of patterns of total external reflection and X-ray diffraction with the aid of a...     

On the possibility of elemental analysis of solid crystals by the X-ray diffraction method

A new method of elemental analysis of solid crystals by the X-ray diffraction method is proposed. The possibility of application of this method to multicomponent polymorphic systems (including a wide range of elements being analyzed and quantitative determination of their mass concentrations without using an external or internal standard) is demonstrated for natural aluminum silicate and titanium oxide samples as examples.     

Electron transfer in the structure of a photorefractive doped Bi<Subscript>12</Subscript>TiO<Subscript>20</Subscript>: Ru crystal

The ac conductivity of Bi₁₂TiO₂₀: Ru crystals has been studied in the frequency range 10²–10⁶ Hz and at temperatures 293–773 K. The experimental data have been analyzed in the framework of the model of correlated barrier hops. In this material, the potential barriers are due to the existence of a block structure, crystal lattice defects, and also the presence of a ruthenium impurity. The microparameters characterizing the charge transfer in doped bismuth titanate single crystals have been determined.     

Mechanism of Optical Charge Exchange of Magnetic Centers in BSO : Fe

Physics of the Solid State - High-resistance photosensitive crystals of Bi12SiO20 (BSO) doped with iron ions were studied. X-ray diffraction analysis reveals the compression of a unit cell in a BSO...     

Synthesis and Photocatalytic Activity of Cerium(IV) Fibrous Nanostructures

The method using cellulose as a template was proposed for the synthesis of fibrous structures consisting of cerium(IV) oxide nano-sized particles. The chemical composition and morphology of the samples as functions of the annealing temperature were studied by X-ray diffraction analysis, IR spectroscopy, and scanning electron microscopy. It was shown that CeO2 particles obtained from Ce(NO3)3 by the template synthesis at 800°C have the highest photocatalytic activity in the photodestruction of methyl orange (pH = 3.5, acetate buffer) and phenol. It was revealed that CeO2 particles exhibit photoprotective properties in the hydrotartrate buffer solution of methyl orange.