Materials Science: Недавние поступления
Отображаемые элементы 21-40 из 559
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Synthesis of Orthorhombic Tin Dioxide Nanowires in Track Templates
(Materials, 2024)Electrochemical deposition into a prepared SiO2/Si-p ion track template was used to make orthorhombic SnO2 vertical nanowires (NWs) for this study. As a result, a SnO2 -NWs/SiO2/Si nanoheterostructure with an orthorhombic crystal structure of SnO2 nanowires was obtained. Photoluminescence excited by light with a wavelength of 240 nm has a low intensity, arising mainly due ...2026-03-16 -
Synthesis and Study of Oxide Semiconductor Nanoheterostructures in SiO2/Si Track Template
(Crystals, 2024)In this study, chemical deposition was used to synthesize structures of Ga2O3 -NW/SiO2/Si (NW—nanowire) at 348 K and SnO2 -NW/SiO2/Si at 323 K in track templates SiO2/Si (either nor p-type). The resulting crystalline nanowires were δ-Ga2O3 and orthorhombic SnO2 . Computer modeling of the delta phase of gallium oxide yielded a lattice parameter of a = 9.287 Å, which closely ...2026-03-16 -
Synthesis and Characterization of β-Ga2O3/por-GaAs/mono-GaAs Heterostructures for Enhanced Portable Solar Cells
(PHYSICS AND CHEMISTRY OF SOLID STATE, 2024)This study comprehensively details the successful synthesis of a β-Ga2O3/por-GaAs/mono-GaAs heterostructure designed for portable solar cells. Employing a combination of electrochemical etching and hightemperature oxygen annealing, we engineered a heterostructure that exhibits both crystalline and amorphous phases. XRD, SEM, and Raman spectroscopy analyses confirmed the ...2026-03-16 -
Surface Modification of Mesoporous Silica Nanoparticles for Application in Targeted Delivery Systems of Antitumour Drugs
(Polymers, 2024)The problem of tumour therapy has attracted the attention of many researchers for many decades. One of the promising strategies for the development of new dosage forms to improve oncology treatment efficacy and minimise side effects is the development of nanoparticle-based targeted transport systems for anticancer drugs. Among inorganic nanoparticles, mesoporous silica deserves ...2026-03-16 -
Study of the Surface-Layer Softening Effects in xLi2ZrO3–(1−x)Li4SiO4 Ceramics under Irradiation with He2+ Ions
(Ceramics, 2024)The study investigates alterations in the mechanical and thermophysical properties of ceramics composed of xLi2ZrO3–(1−x)Li4SiO4 as radiation damage accumulates, mainly linked to helium agglomeration in the surface layer. This research is motivated by the potential to develop lithium-containing ceramics characterized by exceptional strength properties and a resistance to the ...2026-03-16 -
Study of the Resistance of Lithium-Containing Ceramics to Helium Swelling
(Ceramics, 2024)The paper presents the results of studies of the resistance of lithium ceramics to helium swelling during its accumulation in the structure of the near-surface layer, and the identification of the three types of lithium ceramics most resistant to radiation degradation: Li4SiO4 , Li2TiO3 , and Li2ZrO3 . The simulation of helium swelling under high-dose irradiation was carried ...2026-03-16 -
Study of the Microstructure and Phase Composition of Ceramics Based on Silicon Carbide Irradiated with Low-Energy Helium Ions
(Inorganic Materials: Applied Research, 2024)The effect of irradiation with helium ions with energy of 40 keV and doses from 1 × 1014 to 2 × 1017 cm–2 on the microstructure and phase composition of ceramics based on silicon carbide is studied. Radiation growth of the 6H–SiC crystal lattice is revealed. At a dose of 1 × 1016 cm–2, a decrease in deformation is observed related to the formation of gas-vacancy clusters, which ...2026-03-16 -
STUDY OF THE INFLUENCE OF THE ACCUMULATED DOSE OF DAMAGE IN THE NEAR-SURFACE LAYER ON RESISTANCE TO EXTERNAL INFLUENCES ASSOCIATED WITH CORROSION PROCESSES DURING HIGH-TEMPERATURE ANNEALING
(Eurasian Physical Technical Journal, 2024)Investigating the challenges associated with the structural and strength degradation of ceramic fuel cells, which hold significant potential for hydrogen production through electrolysis methods, is a current focus of research. Understanding the degradation processes and their occurrence rate is crucial in the assessment of the efficacy of these ceramics for applications in ...2026-03-16 -
Study of the Influence of Doping Efficiency of CeO2 Ceramics with a Stabilizing Additive Y2O3 on Changes in the Strength and Thermophysical Parameters of Ceramics under High-Temperature Irradiation with Heavy Ions
(Crystals, 2024)The article outlines findings from a comparative analysis of the effectiveness of doping CeO2 ceramics with a stabilizing additive Y2O3 on alterations in the strength and thermophysical parameters of ceramics under high-temperature irradiation with heavy ions comparable in energy to fission fragments of nuclear fuel, which allows, during high-temperature irradiation, to ...2026-03-16 -
STUDY OF THE EFFECT OF THE FORMATION OF TWO-PHASE CERAMICS BASED ON NEODYMIUM ZIRCONATE DUE TO DOPING WITH MGO AND Y2O5 ON THE STABILITY OF STRENGTH AND THERMOPHYSICAL PARAMETERS UNDER IRRADIATION
(Eurasian Physical Technical Journal, 2024)The work presents the study results of the determination of the resistance of neodymium zirconate doped with MgO and Y2O5 to radiation damage stemming from irradiation with heavy ions akin to nuclear fuel fission fragments. The attraction towards this type of ceramics stems from its potential to raise the operational temperatures within the core of next-generation nuclear ...2026-03-16 -
Study of the Effect of Nanostructured Grains on the Radiation Resistance of Zirconium Dioxide Ceramics During Gas Swelling in the Case of High-Dose Irradiation with He2+ Ions
(ES Materials and Manufacturing, 2024)The paper is devoted to the study of the influence of variation of ZrO2 ceramics grain sizes on the resistance to radiationinduced swelling under irradiation with low-energy Не2+ ions. The choice of ZrO2 ceramics as objects of research is due to high levels of mechanical strength and hardness, as well as low rates of thermal expansion, which eliminates the effects of thermal ...2026-03-16 -
STUDY OF THE EFFECT OF HEAT TRANSFER DURING MOLDING OF TERMOPLASTIC BERYLLIUM OXIDE CERAMICS
(Eurasian Physical Technical Journal, 2025)Beryllium oxide (BeO) ceramics formed with the use of ultrasound exhibit more intense sintering, lower shrinkage, and a reduced sintering temperature compared to ceramics produced without ultrasound. The effectiveness of ultrafast sintering is dependent on the cohesion of ceramic agglomeration and the proper arrangement of particles. Rheological properties thermoplastic ...2026-03-16 -
Study of Water Stress in Plains Rivers: Climate and Human Influence
(Joint Journal of Novel Carbon Resource Sciences & Green Asia Strategy, 2024)The study aims to assess recent changes in water consumption, stress, and supply in Northern and Central Kazakhstan amidst significant climate and socio-economic shifts. The study used methods of analysing long-term changes in annual and seasonal runoff, statistical analysis, and assessment of the anthropogenic impact on water resources. The article presents new data on the ...2026-03-16 -
Study of the effect of phase formation processes on the change in optical and thermal properties of Nd2Zr2O7 ceramics with a pyrochlore structure
(Optical Materials: X, 2025)The paper presents the results of studies of the influence of phase formation processes with variations in annealing temperature on the processes of stabilization of the crystal structure, optical and thermal properties of Nd2Zr2O7 ceramics, which have great potential for use in optoelectronic applications due to the transitions of Nd3 ions, as well as high stability to ...2026-03-16 -
Study of the application prospects of film detectors for estimation of α-radiation density
(Optical Materials: X, 2025)The aim of this research is to study the prospects of using the proposed methods of optical UV spectroscopy and X-ray diffractometry to determine the radiation density of the daughter products of radon decay - α-particles recorded using polymer track detectors. This paper presents the results of experiments on detecting the daughter products of radon decay - α-particles in ...2026-03-16 -
Study of defect formation mechanisms in Li2ZrO3/MgLi2ZrO4 ceramics using EPR spectroscopy
(Optical Materials: X, 2025)The article presents the results of experimental studies of the effect of the stabilizing MgO dopant using the electron spin resonance (ESP) method on enhancement of the stability of Li2ZrO3 ceramics to defect formation processes and accumulation of radiolysis products in the near-surface layer in the case of high-dose irradiation with protons simulating the hydrogenation ...2026-03-16 -
Structural Changes in High-Entropy Alloys CoCrFeNi and CoCrFeMnNi, Irradiated by He Ions at a Temperature of 700 ◦C
(Materials, 2024)High-entropy alloys (HEA) are promising structural materials that will successfully resist high-temperature irradiation with helium ions and radiation-induced swelling in new generations of nuclear reactors. In this paper, changes in the elemental and phase composition, surface morphology, and structure of CoCrFeNi and CoCrFeMnNi HEAs irradiated with He2+ ions at a temperature ...2026-03-16 -
Structural and magnetic properties of hydrothermally synthesized Ca-doped hematite
(Next Materials, 2025)Powders of calcium-substituted hematite were synthesized via hydrothermal method. The samples were char acterized using X-ray diffraction, Mossbauer ¨ spectroscopy, scanning electron microscopy, energy-dispersive Xray spectroscopy, Fourier-transform infrared spectroscopy, and magnetometry. Structural analysis revealed that Ca-substituted samples maintained single-phase hematite ...2026-03-16 -
Stress Analysis in Tungsten Alloys Modified with Plasma Flows and Irradiated with Helium Ions
(Coatings, 2025)As the development of nuclear fusion depends on plasma-facing materials, new methods for improving the radiation resistance of tungsten are being created and tested. This paper presents the results of studying the structure, surface morphology, phase composition, and residual internal stresses in tungsten alloys modified by plasma flows and irradiated with helium ions with ...2026-03-16 -
Thermal annealing of radiation damages produced by swift 14N and 16O ions in LiF crystals
(Materials Research Express, 2024)Annealing of color centers was studied in lithium fluoride crystals, irradiated with 23-MeV nitrogen and 28-MeV oxygen ions. Basing on the optical absorption spectroscopy and reaction-rate modelling, a new interpretation of the annealing kinetics at the practically important temperatures below 500 K is suggested. Proposed model explains simultaneous decrease of the F and ...2026-03-16
