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Article
New Representative of Pinus L. from Jurassic Deposits of Belgorod Region, Russia
A new species of fossil pines, P. bukatkinii sp. nov., was found in the Middle Jurassic of Stoilensk open mine (the vicinity of Stary Oskol town, Belgorod Region). Seed cones of the new species possess four key d...
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Article
High-Pressure Hydrofullerites
This paper is a brief summary of the results of long-term experimental studies of C60Hx hydrofullerites with a hydrogen content of up to x ~ 60 or more, obtained by loading C60 fullerites with hydrogen at pressur...
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Article
Studying Changes in the Structure of Thermally Modified Beech Wood by IR Fourier Spectroscopy
Wood of forest beech (Fagus sylvatica L.) has high physical and mechanical properties and is widely used in various industries. In this paper, it is shown that, when exposed to elevated temperatures, changes in t...
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Article
Heavy metals and radionuclides distribution and environmental risk assessment in soils of the Severodvinsk industrial district, NW Russia
The article is devoted to the study of the content of heavy metals and radionuclides in soils of the environments of the Severodvinsk industrial district (Northwest Russia). The city of Severodvinsk is the lar...
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Article
Stems of a New Osmundaceous Fern from the Middle Jurassic of Kursk Region, European Russia
New species of osmundaceous ferns, Osmundastrum gvozdevae sp. nov., is established on the basis of small coalified stems with preserved cellular structure, originated from the Upper Bathonian deposits of the Mikh...
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Article
Structure and Properties of SiO x Films Prepared by Chemical Etching of Amorphous Alloy Ribbons
The structure and the physical properties of amorphous SiO x films prepared by chemical etching of an iron-based amorphous ribbon alloy have been studied. The neutron diffractio...
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Article
Influence of nanoparticles of cesium sulfate and deformation on structure, vibration spectra, and luminescence of polystyrene
Significant changes in infrared absorption spectra of polystyrene upon the addition of cesium sulfate nanoparticles to it are observed, which is due to two variants of attachment of organic molecules to nanopa...
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Article
Interaction of hydrofullerite C60H42 with air
The transmission and Raman spectra of C60H42 samples synthesized at a high hydrogen pressure and stored under different conditions have been measured. It has been found that, upon interaction of the compound with...
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Article
Properties of a composite material based on multi-walled carbon nanotubes and an ionic liquid
A solid-phase composite material based on multi-walled carbon nanotubes and an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate) has been synthesized. It has been found using infrared spectroscopy...
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Article
Open AccessFormation of metallic magnetic clusters in a Kondo-lattice metal: Evidence from an optical study
Magnetic materials are usually divided into two classes: those with localised magnetic moments and those with itinerant charge carriers. We present a comprehensive experimental (spectroscopic ellipsomerty) and...
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Article
Fullerit C60 single crystals grown on earth and in space
Fullerit C60 single crystals were grown by sublimation on Earth and under microgravity during the FOTON-M3 mission using the same growth parameters and the same multizoned electrovacuum POLIZON-M furnace. IR spec...
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Article
Synthesis of a periodic SiC/C nanostructure
Highly porous periodic structures consisting of a three-dimensional replica of pores in the initial opal lattice have been synthesized by high-temperature thermochemical treatment of opal matrices filled with ...
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Article
Structural ordering upon annealing of europium molybdate subjected to pressure treatment
It has been found that treatment of europium molybdate single crystals under high uniform pressure leads to radical changes of the IR reflectance spectra of the samples. Instead of a series of narrow lines, wh...
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Article
Adsorption properties of carbon nanotubes depending on the temperature of their synthesis and subsequent treatment
A correlation between the temperature of the synthesis of carbon nanotubes (CNT) by method of catalytic pyrolysis from ethanol on a nickel catalyst and their ability for the modification of oxidation under variou...
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Article
The memory effect in Eu2(MoO4)3 single crystals exposed to high hydrostatic pressure
The influence of high-pressure hydrostatic compression and subsequent annealing on the structural properties of β’-phase single crystals of europium molybd ate was studied by IR spectroscopy and X-ray diffract...
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Article
Three-dimensional periodic lattice of ZrO2 nanocrystals in transparent silica matrix
The conditions for synthesizing an opal-zirconia-carbon nanocomposite in the form of monolithic (without pores) transparent silica with an ordered distribution of nanocrystals throughout the sample have been d...
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Article
Growth of ZnO nanocrystals by pulsed laser deposition on sapphire and silicon and the infrared spectra of the nanocrystals
The ZnO nanorods that comprise highly oriented nanorod structures are grown on sapphire and silicon substrates by laser ablation. The nanostructures grown in different conditions are characterized by means of ...
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Article
Oriented ZnO nanorods and their IR reflection spectra
Oriented ZnO nanorods have been grown on sapphire and silicon substrates by pulsed laser deposition. It is established that IR spectroscopy gives information about the crystal structure of nanorods, their cond...
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Article
Synthesis of α-SiC nanocrystals by carbothermal reduction of spherical nanoparticles of amorphous silicon dioxide
The method for carbothermal reduction of spherical particles of amorphous silicon dioxide is developed, and hexagonal α-SiC polytype nanocrystals are synthesized. The prepared samples are characterized by X-ra...
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Article
IR study of the pressure-induced amorphization and recrystallization of europium molybdate
Drastic changes of the IR spectra of optical phonons in europium molybdate single crystal were observed after its hydrostatic compression: instead of a series of narrow lines, wide bands were observed and a ne...