A5043284122- Luminescence Properties of Advanced Materials
- Acoustic Wave Resonator Technologies
- Optical and Acousto-Optic Technologies
- Radiation Detection and Scintillator Technologies
- Photorefractive and Nonlinear Optics
- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Solid-state spectroscopy and crystallography
- Glass properties and applications
- Atomic and Subatomic Physics Research
- Solid State Laser Technologies
- Terahertz technology and applications
- Metal and Thin Film Mechanics
- Photonic and Optical Devices
- Ga2O3 and related materials
- Medical Imaging Techniques and Applications
- X-ray Diffraction in Crystallography
- Nuclear materials and radiation effects
- Diamond and Carbon-based Materials Research
- Advanced ceramic materials synthesis
- Semiconductor materials and devices
- Perovskite Materials and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Gas Sensing Nanomaterials and Sensors
- Phase-change materials and chalcogenides
National University of Science and Technology
2011-2025
National University of Science and Technology
2015-2024
The article discusses the features and problems of metrological quality assurance measure- ments parameters optical single-crystal materials elements made them using examples measurements dielectric ionic from practice interdepartmental educational testing laboratory semiconductor dielectrics «Single crystals blanks stock on their base» NUST MISIS. It has been established that properties grown can be adjusted by exposing numerous structural point defects, which control crystals, to external...
We report a study of the attenuation spectra transformations for series Bismuth (Bi) doped silica fibers with various contents emission-active Bi centers, which arise as result irradiation by beam high-energy electrons. The experimental data reveal substantial decrease concentration associated presence Germanium in glass, at increasing dose (the resonant-absorption bleaching effect germano-silicate fiber). In contrast, spectral changes that appear alumino-silicate fiber have through...
Modification of band structure induced by Sc in a novel material Gd<sub>2.97</sub>Ce<sub>0.03</sub>Ga<sub>2.5</sub>Sc<sub>1</sub>Al<sub>1.5</sub>O<sub>12</sub> results the enhancement energy transfer to Ce<sup>3+</sup>.
New emerging high-energy radiation detection techniques are based on the use of rare-earth ion doped materials. There is a great demand for new inorganic scintillators medical applications, including X-ray and g detection. In these scintillating materials must comply with main requirements such as high optical quality, light yield, short response time etc. Materials satisfying include Gd 3 Al 2 Ga O 12 : Ce (GAGG Ce) single crystals. By now characteristics GAGG have been studied...
The application of single crystals in acousto-, opto-, micro - and nanoelectronics defines strict requirements to crystal elements as well the need for certification these products. use both elements, it concurrently However, there are difficulties with metrological support measurement assess quality stock on their base. There virtually no accredited test laboratories responsible testing materials. Many methods important parameters materials not certified. is a shortage industrially produced...
We report a study of attenuation spectra’ transformations in couple Cerium (Ce) doped alumino-phospho-silicate fibers (one them codoped with gold (Au)), occurring under irradiation by beam high-energy β-electrons. The experimental data reveals an essential effect β-irradiation upon the absorptive properties fibers, given noticeable susceptibility Ce ions Ce3+/Ce4+ valence states to treatment, arisen as growth followed saturation induced absorption. also posterior bleaching β-darkened terms...
We conducted a comprehensive study using the spectrophotometric complex "Cary 5000" with accessories "DRA" and "UMA". used this to obtain accurate, high-precision results for different material types, especially single crystal optical materials in range of wave-length from 250 3500 nm polarized light types polarization non-polarized light, wide incidence angles light. developed certified measurement techniques measure parameters sample types: solids rough polished surfaces, powders, liquids...
Transparent yellowish Ca3TaGa3Si2O14 single crystals were grown in Ar+(0.5–3)% O2 along the Y-axis by Czochralski technique. The structural perfection of samples was studied X-ray topography and rocking curve methods. Topograms curves surfaces Y- Z-cuts before after surface treatments (polishing etching). Transmittance spectra measured wavelength range 200–3300 nm. Optical anisotropy X- Z-axes, dichroism X-axis. dispersions refractive index No specific rotation polarization plane determined...