Search Results - "SEMASHKO, V. V"

EPR and optical study of erbium-doped CeO2 and CeO2 / CeF3 nanoparticles by Pudovkin, M.S., Morozov, O.A., Korableva, S.L., Rakhmatullin, R.M., Semashko, V.V., Ginkel, A.K., Rodionov, A.A., Kiiamov, A.G.

“…Here, the facile dry synthesis of composite CeO2/CeF3 nanoparticles doped with Er3+ probe ions using ammonium bifluoride (NH4HF2) is reported. This method…”
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EPR study of nanocrystalline CeO2 exhibiting ferromagnetism at room temperature by Rakhmatullin, R. M., Pavlov, V. V., Semashko, V. V.

“…Electron paramagnetic resonance (EPR) spectroscopy complemented with X‐ray diffraction, X‐ray fluorescence, and optical spectroscopy was used to study…”
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Lithium Rare-Earth Fluorides as Photonic Materials: 2. Some Physical, Spectroscopic, and Lasing Characteristics by Semashko, V. V., Korableva, S. L., Fedorov, P. P.

“…— We review the physical properties of crystalline LiRF 4 (R = Y, Gd–Lu) hosts and analyze progress in the application of rare-earth-activated LiRF 4 crystals…”
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Long-Term Population Dynamics of Seabirds Breeding in the Western Part of the White Sea by Semashko, V. Y., Semashko, E. V., Tertitski, G. M., Cherenkov, A. E., Shutova, E. V., Tolmacheva, E. L.

“…The results of a comparison of the long-term population dynamics of seabirds breeding in the western part of the White Sea on both protected and unprotected…”
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The comparison of Pr3+:LaF3 and Pr3+:LiYF4 luminescent nano- and microthermometer performances by Pudovkin, M. S., Korableva, S. L., Koryakovtseva, D. A., Lukinova, E. V., Lovchev, A. V., Morozov, O. A., Semashko, V. V.

“…In the present work, we make a comparison of Pr 3+ :LaF 3 and Pr 3+ :LiYF 4 luminescent nano- and microthermometer performances. We studied Pr 3+ :LaF 3…”
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Tiny Rare-Earth Fluoride Nanoparticles Activate Tumour Cell Growth via Electrical Polar Interactions by Semashko, Vadim V., Pudovkin, Maksim S., Cefalas, Alkiviadis-Constantinos, Zelenikhin, Pavel V., Gavriil, Vassilios E., Nizamutdinov, Alexei S., Kollia, Zoe, Ferraro, Angelo, Sarantopoulou, Evangelia

“…Localised extracellular interactions between nanoparticles and transmembrane signal receptors may well activate cancer cell growth. Herein, tiny LaF 3 and PrF…”
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Lithium Rare-Earth Fluorides As Photonic Materials: 1. Physicochemical Characterization by Fedorov, P. P., Semashko, V. V., Korableva, S. L.

“…— LiRF 4 lithium rare-earth (RE) fluorides existing in the LiF–RF 3 systems are important laser materials. This review examines phase equilibria in the LiF–RF…”
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Luminescence Nanothermometry Based on Pr3+ : LaF3 Single Core and Pr3+ : LaF3/LaF3 Core/Shell Nanoparticles by Semashko, V. V., Kiiamov, A. G., Khusnutdinova, R. Sh, Korableva, S. L., Lukinova, E. V., Koryakovtseva, D. A., Pudovkin, M. S., Nizamutdinov, A. S.

“…Core Pr3+ : LaF3 (CPr = 1%) plate-like nanoparticles (nanoplates), core/shell Pr3+ : LaF3 (CPr = 1%)/LaF3 nanoplates, core Pr3+ : LaF3 (CPr = 1%) sphere-like…”
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Magnetic properties of doped CaF2 powders by Rakhmatullin, R.M., Semashko, V.V., Lovchev, A.V., Rodionov, A.A., Gilmutdinov, I.F., Kiiamov, A.G.

“…Room-temperature “ferromagnetism” found last decades in nonmagnetic nanoparticles is a puzzle that is not solved yet. In this work we report about the…”
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Optical Properties of LiGdF4 Single Crystal in the Terahertz and Infrared Ranges by Komandin, Gennady A., Lebedev, Sergey P., Korableva, Stella L., Morozov, Oleg A., Kyashkin, Vladimir M., Semashko, Vadim V., Fedorov, Pavel P.

“…The basic mechanisms of absorption of THz range radiation in optically perfect LiGdF4 single crystals were studied using the broadband experimental data and…”
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EPR, optical, and dielectric spectroscopy of Er-doped cerium dioxide nanoparticles by Rakhmatullin, R. M., Kurkin, I. N., Pavlov, V. V., Semashko, V. V.

“…authoren authoren The cerium dioxide nanoparticles doped at low level with Er ions and with grain sizes of about 22 and 300 nm were comprehensively studied…”
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Coprecipitation Method of Synthesis, Characterization, and Cytotoxicity of Pr3+:LaF3 (CPr = 3, 7, 12, 20, 30%) Nanoparticles by Nizamutdinov, A. S., Semashko, V. V., Akhmadeev, Albert A., Osin, Yury N., Pavlov, Vitaly V., Koryakovtseva, D. A., Morozov, Oleg A., Shtyreva, Victoria, Zelenikhin, Pavel, Pudovkin, M. S., Evtugyn, Vladimir G.

“…The Pr3+:LaF3 (CPr = 3, 7, 12, 20, 30%) nanoparticles were characterized by means of high-resolution transmission electron microscopy, X-ray diffraction,…”
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Analysis of the Prospects of Ultrajet Diagnostics for Estimating the Wear Resistance of Bimetallic Tool by Li Syueyan’, Semashko, V. S., Galinovskii, A. L., Belov, V. D., Abashin, M. I.

“…Ultrajet diagnostics is used to analyze bimetallic knives for rotary crushers, and a polymer powder is introduced in a jet to imitate the operating conditions…”
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Optical Method of Measuring the Temperature of Fluoride Crystals Activated by Yb3+ and Tm3+ Ions by Kazakov, B. N., Goriev, O. G., Khadiev, A. R., Korableva, S. L., Semashko, V. V.

“…The fluorescence intensities ratio (FIR) method is applied for measuring the temperature inside the luminescent LiY 0.8 Yb 0.2 F 4 :Tm 3+ crystal. The obtained…”
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Photons Probe Entropic Potential Variation during Molecular Confinement in Nanocavities by Gavriil, Vassilios, Chatzichristidi, Margarita, Kollia, Zoe, Cefalas, Alkiviadis-Constantinos, Spyropoulos-Antonakakis, Nikolaos, Semashko, Vadim, Sarantopoulou, Evangelia

“…In thin polymeric layers, external molecular analytes may well be confined within tiny surface nano/microcavities, or they may be attached to ligand adhesion…”
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EPR evidence of surface paramagnetic defects formation due to annealing of LaF3 nanoparticles by Rakhmatullin, R.M., Pudovkin, M.S., Semashko, V.V.

“…An EPR technique and optical measurements have been applied to study LaF3 nanoparticles doped with 7% of Pr3+ ions. It has been found that vacuum annealing of…”
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Luminescence of GdF3:Pr:Yb and YF3:Pr:Yb Solid Solutions Synthesized by Crystallization from the Melt by Nizamutdinov, A. S., Kuznetsov, S. V., Konyushkin, V. A., Nakladov, A. N., Madirov, E. I., Voronov, V. V., Khadiev, A. R., Marisov, M. A., Semashko, V. V.

“…Spectral and luminescence characteristics of GdF 3 :Pr:Yb and YF 3 :Pr:Yb solid solutions synthesized by crystallization from the melt were investigated…”
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Investigation of Ce3+ Impurity Centers in UV Active Media Ce:LiCaAlF6 and Ce:LiSr0.8Ca0.2AlF6 by Shavelev, A. A., Nizamutdinov, A. S., Semashko, V. V., Korableva, S. L., Marisov, M. A., Lukinova, E. V., Rakhimov, N. F., Morozov, O. A., Madirov, E. I., Shakirov, A. A.

“…Fluoride crystals with the colquiriite structure LiCaAlF 6 doped with Ce 3+ ions are used as active media for lasers of ultraviolet spectral range with…”
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Photoinduced toxicity of PrF3 and LaF3 nanoparticles by Pudovkin, M. S., Zelenikhin, P. V., Krasheninnikova, A. O., Korableva, S. L., Nizamutdinov, A. S., Alakshin, E. M., Semashko, V. V., Safiullin, R. A., Kadirov, M. K.

“…PrF 3 and LaF 3 nanoparticles were synthesized by the hydrothermal method. The size distribution of these nanoparticles in the colloidal solution produced was…”
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Spectral-Kinetic Properties and Energy Transfer in Nanoparticles of Y0.5–xCe0.5TbxF3 Solid Solution by Nizamutdinov, A. S., Madirov, E. I., Lukinova, E. V., Kiyamov, A. G., Andreeva, D. D., Pudovkin, M. S., Korableva, S. L., Semashko, V. V.

“…Crystalline nanoparticles of Y 0.5–x Ce 0.5 Tb x F 3 , doped with various concentrations (x = 0, 0.005, 0.01, 0.05, 0.1, 0.15, and 0.2) of Tb 3+ ions were…”
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