A5031940136- Multiferroics and related materials
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Ferroelectric and Piezoelectric Materials
- Chalcogenide Semiconductor Thin Films
- Electronic and Structural Properties of Oxides
- Radiation Shielding Materials Analysis
- Magnetic Properties of Alloys
- Quantum Dots Synthesis And Properties
- Nuclear Materials and Properties
- ZnO doping and properties
- Solid-state spectroscopy and crystallography
- Magnetic Properties and Synthesis of Ferrites
- Dielectric properties of ceramics
- Advanced X-ray and CT Imaging
- Advanced materials and composites
- Diverse Industrial Engineering Technologies
- Semiconductor materials and interfaces
- Graphite, nuclear technology, radiation studies
- Metallic Glasses and Amorphous Alloys
- Copper-based nanomaterials and applications
- Metal and Thin Film Mechanics
- Electric Power Systems and Control
- Magnetic Properties and Applications
- Nuclear materials and radiation effects
National Academy of Sciences of Belarus
2013-2024
Namangan Engineering Pedagogical Institute
2023
Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus
2016-2022
Minsk Institute of Management
2021
The W-Cu composites with nanosized grain boundaries and high effective density were fabricated using a new fast isostatic hot pressing method. A significantly faster method was proposed for the formation of in comparison to traditional ones. influence both temperature pressure conditions on microstructure, structure, chemical composition, values observed. It has been shown that samples have polycrystalline well-packed microstructure. copper performs function matrix surrounds tungsten grains....
W-Bi2O3 composites were fabricated using the hot isostatic pressing technique for first time. The duration of samples sintering was 3 minutes under conditions high pressure and temperature. study microstructural features chemical composition sintered carried out scanning electron microscopy energy-dispersive X-ray spectroscopy, respectively. effect temperature on quality obtained is determined. densest at a 5 GPa temperatures 25 °C 500 °C, densities which 18.10 17.85 g cm-3, It presented...
An isostatic hot-pressing technique for the fabrication of dense W samples' is presented. The microstructure and chemical content were analyzed. most compact samples received at 5 GPa pressure 1500 2000 °C temperatures, with densities 18.50 19.07 g/cm3, respectively. It has been established that high temperature exposure a positive effect on both density. shown as sintering increases, porosity decreases from 32.31% to 0.94%, their relative density increases 67.69% 99.06%. crystal structure...
Evolution of the crystal structure ceramics BiFeO3–BaTiO3 across morphotropic phase boundary was analyzed using results macroscopic measuring techniques such as X-ray diffraction, differential scanning calorimetry, and thermal analysis, well data obtained by local scale methods probe microscopy. The allowed to specify concentration temperature regions single coexistent clarify a modification structural parameters rhombohedral–cubic boundary. show unexpected strengthening distortion specific...
The densely packed arrays of Ni nanowires 70 nm diameter and 6-12 μm length were obtained via electrodeposition into porous alumina membranes (PAAMs) 55-75 thickness. morphology, microstructure magnetic properties between the room liquid-helium temperature in PAAMs have been investigated using scanning electron microscopy, X-ray diffraction vibrating sample magnetometry. crystal structure is fcc with (220) preferred orientation. characteristics compared same bulk other researchers' data....
The structural state and crystal structure of Lu(1−x)ScxFeO3 (0 ≤ x 1) compounds prepared by a chemical route based on modified sol–gel method were investigated using X-ray diffraction, Raman spectroscopy, as well scanning electron microscopy. It was observed that doping with Sc ions led to phase transition from the orthorhombic hexagonal via wide two-phase concentration region 0.1 < 0.45. An increase in scandium content above 80 mole% stabilization non-perovskite bixbyite specific for...
Direct synthesis of CuGaS(2) from elemental ingredients in a two-zone furnace resulted macroseparation Cu-rich and Ga-rich regions over the crystallization volume. In parts ingot, near-stoichiometric chalcopyrite phase (I42d) copper sulfides were found. part, along with some Cu deficiency, new tetragonal I4m2 composition close to Cu(5)Ga(9)S(16) crystal lattice parameters = 3.7777(2) Å, c 5.2483(4) Å was revealed. It concluded that this Cu-deficient chalcopyrite-like is not an ordered defect...
Single‐phase strontium ferromolybdate (Sr 2 FeMoO 6–δ ) samples with different degrees of the superstructural ordering Fe/Mo cations ( P are obtained from partially reduced SrFeO 3–х , SrMoO 4 precursors by solid‐state technology. The study temperature dependences magnetization measured in field‐cooling and zero‐field‐cooling modes indicated an inhomogeneous magnetic state samples. presence regions nature has also been revealed small‐angle neutron scattering. For Sr values for all field...
The synthetic µ-diamonds powder was synthesized using high pressure temperature technique. metal-catalyst effect used to reduce the and of diamonds synthesis. irradiation by focused beam 975 nm laser diode lead obtain intense broadband white emission with maximum at 620 nm. This type generation were described earlier for graphene ceramic foam. μ-diamonds is characterized low threshold power excitation strong dependence ambient pressure. It suggested that light observed from samples may...
Monophasic iron ferromolybdate nanopowders with a double perovskite structure have been synthesized using the citrate-gel technique at pH=4. A superstructural ordering degree of and molybdenum cations 88% has obtained. X-ray diffraction pressed Sr2FeMoO6−δ pellets subjected to annealing T=700 K p(O2)=10 Pa revealed formation SrMoO4 phase grain boundaries. The temperature dependence electrical resistivity in range from 4.2 300 switches metal type one monophasic Sr2FeMoO6-δ semiconductor...
Stable phase CuIn 1− x Fe S 2 ( ≤ 0.10) crystals of chalcopyrite structure were prepared by annealing synthesized material with the new quasicubic sphalerite type at high pressure 5.5 GPa and temperatures ranging from 1170 to 1270 K. solid solutions formed mixing CuInS CuFe 1.02 1.98 that in advance. Phase formation (1 − )CuInS – CuFeS system was investigated unit‐cell parameters (the lattice constants volume) computed as a function composition. In addition, parameter tetragonal distortion c...
Phase formation under high pressure in the chalcopyrite–delafossite system has been studied at 5 GPa and 500–1000 °C. The parent chalcopyrite composition used this study was slightly Cu-deficient, corresponding to chemical formula (Cu,Ga)0.905GaS2. It revealed that high-pressure high-temperature conditions, a mixture of phases partly decomposes form Cu2S Ga2O3. defect (Cu,Ga)0.905GaS2 splits into near-stoichiometric CuGaS2 Cu-deficient cubic (sphalerite-like) phase (Cu,Ga)0.8S composition....
Wurtzite–zincblende mixture, ZnO–ZnS (1:1 wt.%), was thermally treated at 5 GPa in order to explore a possible mutual solubility of the end members and formation zinc oxysulphide phases under high pressure. The data on phase content, crystal structure, microstructure from X‐ray diffraction scanning electron microscopy studies obtained compacts (ceramics) were compared analyzed. It found that as temperature is increased, following processes occur mixture pressure: release mechanical stresses...
Nanocrystalline La0.9A0.1Mn0.9Cr0.1O3 (A: Li, K, Na) powders have been synthesized by combustion method. The were used to prepare ceramics high-pressure low-temperature sintering technique. For all samples the structure, elemental composition and morphology studied using X-ray diffraction (XRD), Raman spectroscopy, Energy-Dispersive Spectroscopy (EDS) Scanning electron microscopy (SEM). Magnetic properties magnetometry methods valency changes of cations after alkali ions doping photoelectron...
A new composite material of W–Bi2O3 system is proposed as a protection against ionizing radiation. An improved method hot isostatic pressing for the preparation materials proposed. The duration sintering under conditions high pressure and temperature was 3 minutes. study morphology chemical composition composites carried out using scanning electron microscopy X-ray energy-dispersive spectroscopy respectively. density evaluation obtained Archimedes’ method. densest samples were at 5 GPa...
A multi-stage technique for applying insulating coatings to metal powder particles has been developed in order create a new class of Fe-based soft magnetic materials with improved characteristics. The density value calculated from the data X-ray diffraction analysis is approximately 3 % higher than experimentally measured values, which are 7.4–7.45 g/cm . low porosity composites confirmed by SEM and EDX results. proposed method encapsulation iron an oxide layer highly economical various...