A5048372596- Luminescence Properties of Advanced Materials
- Solid State Laser Technologies
- Inorganic Fluorides and Related Compounds
- Gas Sensing Nanomaterials and Sensors
- Optical properties and cooling technologies in crystalline materials
- Advanced Condensed Matter Physics
- Catalytic Processes in Materials Science
- Laser Design and Applications
- Optical and Acousto-Optic Technologies
- Nonlinear Optical Materials Research
- Photonic and Optical Devices
- Glass properties and applications
- Photorefractive and Nonlinear Optics
- Spectroscopy and Laser Applications
- Electromagnetic Effects on Materials
- Liquid Crystal Research Advancements
- Silicon and Solar Cell Technologies
- Advanced Chemical Sensor Technologies
- Mineralogy and Gemology Studies
- Semiconductor Lasers and Optical Devices
- Carbon and Quantum Dots Applications
- Magnetic and transport properties of perovskites and related materials
- Thin-Film Transistor Technologies
- Solid-state spectroscopy and crystallography
- Synthesis and Reactivity of Sulfur-Containing Compounds
Kazan Federal University
2013-2024
Institute of Physics
2018-2024
Kazan Scientific Center
2022-2024
Russian Academy of Sciences
2023
Saratov State University
2003
Yaroslav-the-Wise Novgorod State University
2003
The main goal of this study was creating multifunctional nanoparticles based on rare-earth doped LaF 3 nanocrystals, which can be used as fluorescence thermal sensors operating over the 80–320 K temperature range including physiological (10–50°C). Pr 3+ :LaF (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow><mml:mi>C</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">P</mml:mi><mml:mi...
In this work, the physical characterization of LiGdxY1−xF4 (x = 0.05, 0.3, 0.7, and 1.0) LiGdF4:Eu3+ microparticles was performed. The distribution coefficient 0.05) determined for first time (0.84). Based on kinetic data, LiGdF4 sample chosen further Eu3+ doping (0.1 1.0 at.%). For sample, emission clearly observed under excitation Gd3+. This fact indicates an effective energy transfer from Gd3+ to Eu3+. temperature-dependent spectral (1.0%) revealed that in 30–250 K temperature range, a...
The Pr 3+ :LaF 3 (C = 3, 7, 12, 20, 30%) nanoparticles were characterized by means of high-resolution transmission electron microscopy, X-ray diffraction, optical spectroscopy, energy dispersive dynamic light scattering, and MTT assay. It was revealed that the average diameter all NPs is around 14–18 nm. hydrodynamic radius 7%) strongly depends on medium. radii in water, DMEM, RPMI-1640 biological mediums 18 ± 5, 41 6, 186 8 nm, respectively. nontoxic at micromolar concentrations toward...
Nd3+ (0.3 mol.%), Yb3+ (0, 1, 2, 3 and 5 mol.%): LiYF4 phosphors were grown by the Bridgman–Stockbarger technique. The luminescence intensity ratio (LIR) of (4F3/2–4I9/2, ~866 nm) emission (2F5/2–2F7/2, ~980 was taken as a parameter. energy exchange between 4F3/2 (Nd3+) 2F5/2 (Yb3+) occurs via phonons, which elucidates LIR temperature dependence. influence cross-relaxation process on sensitivity estimated negligible. function depends concentration at fixed 0.3 mol.% Nd3+. maximum Sa Sr value...
Abstract: The YF3: (Eu3+, Nd3+) nanoparticles (orthorhombic phase, D ~ 130 nm)) were synthesized via the co-precipitation method with subsequent hydrothermal treatment and annealing. Eu3+ τdecay linearly descends increase of temperature in 80 - 320 K range. (T) slope values annealed (2.5 5.0 mol. %) highest (110·10-4 67·10-4, μs/K whole – range, respectively. Thus, these samples chosen for further doping Nd3+. maximum Sa Sr based on LIR (IEu/INd) function 0.67 K-1 (at K) 0.86 %·K-1 154 K),...
YF3: (Eu3+, Nd3+) nanoparticles (orthorhombic phase, D~130 nm) were synthesized via the co-precipitation method, with subsequent hydrothermal treatment and annealing. The Eu3+ τdecay linearly descends increase of temperature in 80–320 K range. (T) slope values annealed (2.5 5.0 mol.%) highest (110·10−4 67·10−4, μs/K) whole range, respectively. Thus, these samples chosen for further doping Nd3+. maximum Sa Sr based on LIR (IEu/INd) function 0.067 K−1 (at 80 K) 0.86%·K−1 154 K), As mentioned...
A considerable enhancement of the room‐temperature ferromagnetism is observed in composite CeO 2 /CeF 3 nanoparticles. The saturation magnetization for nanoparticles (the average particle size ≈100 nm) more than a half order magnitude higher compared to initial ≈30 nm). are synthesized by fluorination For this purpose, ceria powder annealed vacuum followed an intake furnace gaseous tetrafluoromethane (CF 4 ). X‐ray diffraction (XRD) patterns show that resulting has both and CeF structures...
The basic mechanisms of absorption THz range radiation in optically perfect LiGdF4 single crystals were studied using the broadband experimental data and dielectric response function analysis within harmonic oscillator model. polarized IR reflection spectra have allowed one to determine phonon contribution coefficient range, while transmission used obtain birefringence value effects various mulitparticle processes. Additionally, we established optical electrodynamic parameters crystal, which...
The article describes a simple technique for comparative analysis of the second harmonic generation properties new samples and etalon materials by their powders. effectiveness method was tested measuring nonlinear coefficient damage threshold well known materials: KDP, LiIO3, m-nitroaniline demonstrated. parameters promising material DNPAP were measured.
LaF3:Pr3+ crystal is proposed as a promising media for an infrared quantum counter in the mid-infrared spectrum range. In this paper it has been shown that can work range of spectra about 3 μm at temperatures 170 K and 210 with efficiency 5%.
The syntheses of a series novel derivatives stilbazole and their azo-analogs bearing the phenylalkenyl phenyldiazenyl substituents at position 6 pyridoxine ring are reported. observed cis/trans regioselectivity in Wittig reaction between triphenylbenzylphosphonium chloride carbonyl ketal is discussed with respect to transition state intermediates, nature base used reaction, resonance transformations system. azo-derivatives obtained by azocoupling diazonium salts sulfanilic or...