29 Result(s)

Article

Low-Temperature Sol–Gel Synthesis and Photoactivity of Nanocrystalline TiO₂ with the Anatase/Brookite Structure and an Amorphous Component

Nanodispersed TiO₂ consisting of anatase and brookite phases in a ratio of 3 : 1 is obtained by the sol–gel method from titanium(IV) butoxide at a temperature below 100°C. X-ray diffraction, transmission electron...

N. S. Kozhevnikova, E. S. Ul’yanova, E. V. Shalaeva… in Kinetics and Catalysis (2019)

Article

Defect formation, ordering, and transport in SrFe_1–x Si _x O_3–δ (x = 0.05–0.20)

Oxygen nonstoichiometry of perovskite-like SrFe_1–x Si _x O_3–δ (x = 0.05–0.20), studied by thermogravimetric analysis and coulometric titration in ...

O. V. Merkulov, E. N. Naumovich, M. V. Patrakeev… in Journal of Solid State Electrochemistry (2018)

Article

Deformation Behavior and Structure of i-Al-Cu-Fe Quasicrystalline Alloy in Vicinity of Nanoindenter Indentation

The nanoindentation tests have been carried out for the quasicrystalline polygrain Al_62.4Cu_25.3Fe_12.3 alloy with the icosahedral structure i; the load P-displacement h diagrams have been used to estimate the cont...

E. V. Shalaeva, I. O. Selyanin, E. O. Smirnova, S. V. Smirnov… in Physics of the Solid State (2018)

Article

Pressure-induced zircon to monazite phase transition in Y_1–х La _х PO₄: First-principles calculations

Density functional theory was used to study pressure-induced phase transitions of zircon to monazite in doped yttrium orthophosphate, Y_1–х La _х PO

I. R. Shein, E. V. Shalaeva in Journal of Structural Chemistry (2016)

Article

Synthesis, structure and spectroscopic characteristics of Ti(O,C)₂/carbon nanostructured globules with visible light photocatalytic activity

A morphology-controlled facile synthesis of titanium-glycolate precursors with subsequent annealing in He and air atmospheres has been exploited for the production of nanostructured composite globules, whisker...

V N KRASIL’NIKOV, E V SHALAEVA, I V BAKLANOVA… in Bulletin of Materials Science (2016)

Article

Localization of uranium in radiation-damaged nanoheterogeneous natural zircon

High-uranium natural zircon with signs of hydrothermal (up to 300°C) treatment is studied via transmission electron microscopy, Raman spectroscopy, electron probe microanalysis, and local energy-dispersive ana...

E. V. Shalaeva, A. M. Murzakaev, V. V. Makarov, V. G. Pushin… in Glass Physics and Chemistry (2015)

Article

Ion transport in dual-phase SrFe_1−xТа_xO_3−δ (x = 0.03 − 0.10): effects of redox cycling

The incorporation of tantalum cations in mixed-conducting SrFe_1-xTa_xO_3−δ (x = 0.03 − 0.10) results in the formation of single cubic perovskite-like phases in oxidizing atmospheres while under red...

E. V. Shalaeva, M. V. Patrakeev, A. A. Markov… in Journal of Solid State Electrochemistry (2015)

Chapter and Conference Paper

Structural, Optical, and Photocatalytic Properties of Quasi-One-Dimensional Nanocrystalline ZnO, ZnOC:nC Composites, and C-doped ZnO

Various thermolysis rotes of zinc glicolate complexes are considered for the synthesis of quasi-one-dimensional nanostructured aggregates ZnO and Zn–O–C used as photocatalysts. Structural features of quasi-one...

E. V. Shalaeva, O. I. Gyrdasova… in Nanocomposites, Nanophotonics, Nanobiotech… (2015)

Article

Effect of do** with 3d elements (Co, Ni, Cu) on the intrinsic defect structure and photocatalytic properties of nanostructured ZnO with tubular morphology of aggregates

The precursor-derived nanostructured solid solutions Zn_0.95 M _0.05O (M = Co, Ni, Cu) with tubular aggregates have been investigated using optical absorption spectro...

M. A. Melkozerova, V. N. Krasil’nikov, O. I. Gyrdasova… in Physics of the Solid State (2013)

Article

Lamellar structure and nanomechanical properties of quasicrystalline Al-Cu-Fe alloys

The kinetics of structural phase transformations in quasicrystal-forming Al-Cu-Fe alloys with compositions in the region of stability of the icosahedral (i) phase has been investigated. It has been shown that, de...

E. V. Shalaeva, Yu. V. Chernyshev, E. O. Smirnova… in Physics of the Solid State (2013)

Article

Synthesis, microstructure, and native defects of photoactive Zn_{1 − x} Cu _x O solid solutions (0 ≤ x ≤ 0.1) with tubular aggregates

O. I. Gyrdasova, V. N. Krasil’nikov, M. A. Melkozerova, E. V. Shalaeva… in Doklady Chemistry (2012)

Article

Nature of defects in nanocrystalline zinc oxide with particles of tubular morphology

Nanostructured ZnO powders with particles of tubular form were synthesized by a precursor method. A narrow symmetrical line with a g factor of 2.002 was detected in the ESR spectra of the materials. On the bas...

M. A. Melkozerova, V. N. Krasil’nikov… in Theoretical and Experimental Chemistry (2012)

Article

Planar defects in the icosahedral phase in quasicrystal-forming AlCuFe alloys

Electron microscopy has revealed that, upon the formation of a stable icosahedral (i) AlCuFe phase, there arise a large number of planar defects. The revealed defects are nanometer-sized coherent intergrowths of ...

E. V. Shalaeva, A. F. Prekul, S. Z. Nazarova, V. V. Khiller in Physics of the Solid State (2012)

Article

Synthesis and structure of quasi-one-dimensional zinc oxide doped with manganese

Nanotubes of manganese-doped zinc oxide Zn_{1 − x} Mn _x O (0 ≤ x ≤ 0.2) were synthesized by heating the Zn_{1 − x} Mn _{x ...}

O. I. Gyrdasova, V. N. Krasil’nikov… in Russian Journal of Inorganic Chemistry (2012)

Article

Synthesis, microstructure, and photocatalytic characteristics of quasi-one-dimensional zinc oxide doped with d elements

O. I. Gyrdasova, V. N. Krasil’nikov, E. V. Shalaeva, L. Yu. Buldakova… in Doklady Chemistry (2010)

Article

Calorimetric investigation of electronic and lattice excitations of the icosahedral quasicrystal in the range of moderate temperatures

The precise measurements of the specific heat and the linear expansion coefficient of polygrain samples of the ordered icosahedral phase Al₆₃Cu₂₅Fe₁₂ have been performed in the temperature range 1.8–400.0 K. The ...

A. F. Prekul, E. V. Shalaeva, N. I. Shchegolikhina in Physics of the Solid State (2010)

Article

Structural phase transformations in quasicrystal-forming Al-Cu-Fe alloys and defects of the icosahedral phase

Transmission electron microscopy was used to investigate structural and phase transformations and defects of the icosahedral (ι) phase that is formed upon isothermal annealings (T _ann = 55...

E. V. Shalaeva, A. F. Prekul in The Physics of Metals and Metallography (2010)

Article

Photoelectron spectroscopy and diffraction of surface nanoscale NbO/Nb(110) structures

X-ray photoelectron spectroscopy and diffraction (XPS and XPD) are applied to analyze oxygen-induced surface structures on the Nb(110) face formed due to oxygen segregation from the crystal bulk on thermal ann...

M. V. Kuznetsov, A. S. Razinkin, E. V. Shalaeva in Journal of Structural Chemistry (2009)

Article

Surface quasi-ordered nanostructures NbO _x /Nb(110): investigation by surface analysis methods

The oxygen-induced surface structure on the Nb(110) face have been investigated by X-ray photoelectron spectroscopy and X-ray photoelectron diffraction. It is shown that the states (in terms of coordination an...

A. S. Razinkin, E. V. Shalaeva… in Bulletin of the Russian Academy of Science… (2008)

Article

Investigation of the conditions for synthesis of Ce_0.9Y_0.1O₂ dense coatings

The conditions for preparation of Ce_0.9Y_0.1O₂ (CYO) oxide coatings on La_0.8Sr_0.2MnO₃ (LSM) ceramic substrates by screen printing were investigated. The CYO compound was synthesized by the pyrolysis of polymer-sal...

Yu. A. Bakhteeva, E. V. Shalaeva, I. A. Leonidov… in Glass Physics and Chemistry (2008)