A5006837452- Magnetic Properties and Synthesis of Ferrites
- Multiferroics and related materials
- Electromagnetic wave absorption materials
- Pigment Synthesis and Properties
- High Entropy Alloys Studies
- Advanced materials and composites
- High-Temperature Coating Behaviors
- Magneto-Optical Properties and Applications
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Magnesium Oxide Properties and Applications
- Iron oxide chemistry and applications
- Particle Accelerators and Free-Electron Lasers
- Advancements in Solid Oxide Fuel Cells
- Thermodynamic and Structural Properties of Metals and Alloys
- Photonic Crystals and Applications
- Spectroscopy and Laser Applications
- Nuclear materials and radiation effects
- Particle physics theoretical and experimental studies
- Metallic Glasses and Amorphous Alloys
- Metal Extraction and Bioleaching
- Semiconductor materials and interfaces
- Advanced Welding Techniques Analysis
- Recycling and utilization of industrial and municipal waste in materials production
- Plasma Applications and Diagnostics
South Ural State University
2018-2023
Princeton University
2021
Joint Institute for Nuclear Research
2002
Increase in the spontaneous magnetization up to <italic>x</italic> < 0.5 is a sequence of appearance additional magnetic moment 2 <italic>μ</italic><sub>B</sub> Ni<sup>2+</sup> cations tetrahedral positions. For > 0.5, decreases octahedral positions and also decreases.
BaFe12–xTixO19 hexaferrites up to x = 2.00 were fabricated in an ordinary ceramic way. Crystal structure parameters isothermally defined at 300 K from the powder XRD by Rietveld technique. The cell constants have nonmonotonic concentration dependence with a local minimum of ∼ 5.886 Å and V 698.75 Å3 1.00. occupation mechanism titanium cations is confirmed. Mössbauer investigation confirms such localization Ti4+. Magnetization vs field measurements realized K. law approach saturation (LAS)...
The possibility of the formation high entropy single-phase perovskites using solid-state sintering was investigated. BaO-SrO-CaO-MgO-PbO-TiO2, BaO-SrO-CaO-MgO-PbO-Fe2O3 and Na2O-K2O-CaO-La2O3-Ce2O3-TiO2 oxide systems were optimal synthesis temperature is found between 1150 1400 °C, at which microcrystalline single phase with perovskite structure produced. morphology, chemical composition, crystal parameters dielectric properties studied compared that pure BaTiO3. According to EDX data,...
An attempt is made to obtain a welded joint from rolled sheets of heat-resistant copper alloy using friction stir welding. This method differs other types welding in the absence cast weld structure. According test results, no defects are found. It found that metal mixing zone noticeably softer than base metal: HV 0.1 microhardness values for (143.4 ± 3.2) MPa, and average value was 110 MPa with fluctuation 97.9 138 MPa. The application annealing at 980 °C 30 minutes ensures alignment...
Crystalline high-entropy single-phase products with a magnetoplumbite structure grains in the μm range were obtained using solid-state sintering. The synthesis temperature was up to 1400 °C. morphology, chemical composition, crystal structure, magnetic, and electrodynamic properties studied compared pure barium hexaferrite BaFe12O19 matrix. polysubstituted product contains five doping elements at high concentration level. According EDX data, new compound has formula of...
BaFe(11.5-x)Ti0.5AlxO19 (0.1 ≤ x 3.0) samples were produced using solid state reaction method. Systematic studies of the crystal structure parameters, magnetic and microwave properties carried out. All single phase described by P63/mmc space group. It was established that an increase in content Al3+ ions (or BaM:Ti, where BaM – M-type barium hexaferrite) leads to a decrease lattice parameters density samples. This correlates well with ionic radii atomic weight Fe3+ ions. The weakening...
The effect of Ti substitution on the microwave and magnetostatic properties nanostructured hexagonal BaFe12−xTixO19 ferrite composites is studied. permeability measured in frequency range 0.1–22 GHz by a coaxial technique. An analysis data made law approach to saturation. ferrimagnetic resonance frequencies calculated from are consistent with those obtained measurements. natural located 15 22 GHz, depending level x. increase amount elements results low-frequency shift for samples x < 1....
Two new prototype dipole magnets for the proposed fast cycling (f=1 Hz) synchrotron at GSI in Darmstadt have been designed, fabricated and tested. The are based on a window frame iron yoke cooled by liquid nitrogen superconducting winding made from hollow NbTi composite superconductor cable with forced two-phase helium flow T=4.5 K. cold mass of magnet is separated small vacuum gap 0.75 mm to 2.5 mm. A decrease ac power losses factor 2.3 comparison standard Nuclotron obtained. design...
Abstract Results of studying the structure and chemical composition perovskite phases synthesized by solid-state sintering in multicomponent oxide systems: (Ba,Sr,Ca,Mg,Pb)(Ti,Zr)O3, (Ba,Sr,Ca,Mg,Pb)(Ti,Zr,Hf)O 3 , (Ba, Sr, Ca,Mg,Pb)(Ti,Zr,Hf, Sn)O (Ba,Sr,Ca,Mg,Pb)(Ti,Zr,Hf,Sn,Mn)O are presented. The obtained samples was investigated using a JEOL JSM7001F scanning electron microscope equipped with an Oxford INCA X-max 80 energy-dispersive X-ray fluorescence spectrometer. studied Rigaku...