A5061379907- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Magnetic Properties and Synthesis of Ferrites
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Condensed Matter Physics
- Characterization and Applications of Magnetic Nanoparticles
- Dielectric properties of ceramics
- Iron oxide chemistry and applications
- Nuclear materials and radiation effects
- Advanced ceramic materials synthesis
- Solid-state spectroscopy and crystallography
- Electronic and Structural Properties of Oxides
- Nanoparticle-Based Drug Delivery
- Perovskite Materials and Applications
- Layered Double Hydroxides Synthesis and Applications
- Magneto-Optical Properties and Applications
- Advanced Battery Technologies Research
- Rare-earth and actinide compounds
- Advanced Nanomaterials in Catalysis
- Electromagnetic wave absorption materials
- Magnetic Properties of Alloys
- Advancements in Solid Oxide Fuel Cells
National Academy of Sciences of Ukraine
2015-2024
Palladin Institute of Biochemistry
2007-2022
Institute of General and Inorganic Chemistry
2005-2021
O.Ya. Usikov Institute for Radiophysics and Electronics
2009-2021
Case Western Reserve University
2020
Cornell University
2020
Institute of Magnetism
2009-2017
Kyiv City Clinical Oncology Center
2015-2017
Institute of Software Systems
2015
National Academy of Sciences
2015
Composite ceramics based on the spinel Mg 2 TiO 4 were prepared by a conventional mixed‐oxide route. To achieve temperature stabilization of dielectric constant, each composites was added with 7 mol% CaTiO 3 . The effect substitution isovalent Co for microstructure and microwave properties composite also investigated. A maximum Q × f value around 150–160 THz obtained undoped , whereas reduced observed an increase in concentration system (1− x )Mg − Upon doping passed through increasing...
Cerium oxide nanoparticles (CeO2 NPs) are well known for their application in various fields of industry, as biology and medicine. Knowledge synthesis schemes, physicochemical morphological features nanoscale CeO2 is important assessing antioxidant behavior understanding the mechanism oxidative stress its consequences. The choice method should be based on possibility to choose conditions parameters obtaining with controlled dimensions a ratio Се3+/Се4+ surface. In this study, NPs synthesized...
Spin dynamics in Al-substituted yttrium iron garnets is investigated using broadband ferromagnetic resonance measurements the temperature range T=200-360 K. Using measured data, field and linewidth as well their dependence are determined, with implications for uniformity overall quality of samples prepared via different chemical fabrication routes. These key parameters governing spin material important its applications high-speed spintronic magnonic devices.
Using X-ray powder diffractions, Mössbauer spectroscopy, and magnetic measurements, the effect of complex dopants (Co2+ + Ti4+) (Bi3+ on fine structure properties M-type barium hexaferrite prepared by hydroxide carbonate precipitations has been studied. The distribution cations over five nonequivalent positions with magnetoplumbite is discussed. It shown that doped can be used for high-coercitivity data storage media.
Fe-doped La0.77Sr0.23Mn1 - y Fe O3 nanoparticles have been synthesized by sol-gel method, and ceramic samples based on them were sintered at 1613 K. Crystallographic magnetic properties of obtained studied. It has established that cell volume for increases with growing iron content, while this dependence displays an opposite trend in the case samples. Mössbauer investigations shown all samples, oxidation state is +3. According to studies, room temperature, both ≤ 0.06 display...
There seems to be general agreement that oxidative stress is involved in many pathological conditions including Parkinson's, Alzheimer's, and other neurodegenerative diseases, overall aging. Cerium oxide nanoparticles, also known as nanoceria (CeO2-NPs), have shown promise catalytic antioxidants, based on their ability switch between Ce3+ Ce4+ valence states. In the present work we synthesized characterized CeO2-NPs, examined effect of CeO2-NPs amyloidogenesis insulin, analyzed impact...
The dependence of ionic transport properties on the structure and composition perovskites Li0.5-xNaxLa0.5TiO3 (0 ≤ x 0.5) has been analyzed by means ND, XRD, NMR, impedance spectroscopy. Local lithium mobility is shown to decrease progressively 2 orders magnitude along series; however, long-range dc conductivity decreases sharply at = 0.2 more than 6 magnitude. from values typical fast conductors, 10-3 S/cm room temperature, insulators, 10-10 S/cm, discussed in terms a three-dimensional...
Dependence of heating efficiency <italic>vs.</italic> magnetic field for fluid based on La<sub>0.78</sub>Sr<sub>0.22</sub>MnO<sub>3</sub> nanoparticles provides information about the mechanism AC losses.
In this work, thick films of Perovskite La0.57Li0.33TiO3 (LLTO) and Li-NASICON Li1.3Al0.3Ti1.7(PO4)3 (LATP) Li-conductors have been prepared by tape casting their microstructure homogeneity assessed SEM confocal Raman spectroscopy. Electrical properties investigated Impedance particular, bulk, grain-boundary electrode contributions to conductivity differentiated as a function frequency. However, modifications on the chemistry affects considerably ion films. The spectroscopy results allowed...
Two sets of core/shell magnetic nanoparticles, CoFe2O4/Fe3O4 and Fe3O4/CoFe2O4, with a fixed diameter the core (~ 4.1 ~ 6.3 nm for former latter sets, respectively) thickness shells up to 2.5 were synthesized from metal chlorides in diethylene glycol solution. The nanoparticles characterized by X-ray diffraction, transmission electron microscopy, measurements. analysis results measurements shows that coating two simultaneous effects: first, it modifies parameters core-shell interface,...
The amplitude and phase characteristics of metamaterial cells consisting microstrip dielectric resonators (DRs) were studied. Circuits containing fundamentally different quality factors in the microwave range excited on types oscillations have two independent energy ways, which allows simulation Fano resonances electromagnetically induced transparency (EIT). effects associated with anomalous dispersion cell as well positive values group delay (GD) are demonstrated. experimental calculated...