A5062155389- Advanced Condensed Matter Physics
- Theoretical and Computational Physics
- Physics of Superconductivity and Magnetism
- Characterization and Applications of Magnetic Nanoparticles
- Magnetic and transport properties of perovskites and related materials
- Magnetic Properties and Synthesis of Ferrites
- Iron oxide chemistry and applications
- Minerals Flotation and Separation Techniques
- Chemical and Physical Properties of Materials
- Polyoxometalates: Synthesis and Applications
- Magnetic properties of thin films
- Metallurgical and Alloy Processes
- Magnetism in coordination complexes
- Crystallization and Solubility Studies
- Multiferroics and related materials
- Nanotechnology research and applications
- Organometallic Complex Synthesis and Catalysis
- Nanoparticle-Based Drug Delivery
- X-ray Diffraction in Crystallography
- Catalysis and Oxidation Reactions
- Organic and Molecular Conductors Research
- Synthesis and characterization of novel inorganic/organometallic compounds
- Healthcare Systems and Public Health
- Medical and Agricultural Research Studies
- Human Health and Disease
M.N. Mikheev Institute of Metal Physics
2009-2023
Omsk State Medical University
2023
Russian Academy of Sciences
2008-2017
Omsk State University
2017
Spin-orbit (SO) Mott insulators are regarded as a new paradigm of magnetic materials, whose properties largely influenced by SO coupling and featured highly anisotropic bond-dependent exchange interactions between the spin-orbital entangled Kramers doublets, typically manifested in $5d$ iridates. Here, we propose that very similar situation can be realized cuprates when Cu$^{2+}$ ions reside tetrahedral environment, like spinel compounds. Using first-principles electronic structure...
We investigate nonequilibrium properties of the frustrated Heisenberg antiferromagnets on triangular lattice. Nonequilibrium critical relaxation shows a dynamic transition (or, at least, sharp crossover) near temperature ${T}_{\mathrm{u}}=0.282J$ equilibrium ${\mathbb{Z}}_{2}$-vortex unbinding. show that starting from high-temperature initial state, due to presence ${\mathbb{Z}}_{2}$ vortices in system being considered, broad range $T<{T}_{\mathrm{u}}$ intermediate time are similar those...
ortho-Pyrovanadate (or ortho-diorthovanadate) K2Mn23+Mn2+O(OH)(VO4)(V2O7) synthesized hydrothermally crystallizes in the orthorhombic space group Pnma with a = 17.9155(5), b 5.8940(2), c 10.9971(3) Å, V 1161.23(6) Å3, and Z 4. Its crystal structure features linear chains of edge-sharing Mn3+O6 octahedra every second pair condensed Mn2+O6 octahedron on one side chain sawtooth pattern so that each consists triangular trimer. These chains, running parallel to axis linked by VO4 V2O7 groups,...
The experiments on the impact of size magnetite clusters various magnetic properties (magnetic moment, Curie temperature, blocking temperature etc.) have been carried out.The methods separation, centrifuging water suspensions biocompatible iron oxide nanoparticles (NPs) allow producing fractions with diameter in range 4÷22 nm.The NPs are controlled by dynamic light scattering (DLS), transmission electron microscopy (TEM) and atomic force (AFM).For first time DLS method is applied real to...
We have studied the Heisenberg antiferromagnets characterized by magnetic structures with periods being two times larger than lattice period. considered all types of Bravais lattices (simple cubic, bcc and fcc) divided these into 7 classes i.e. 3 plus 4 denoted symbols A B correspondingly. The order parameter characterizing degeneracies is an ordinary Neel vector for so-called 4-complex classes. taken account fluctuation corrections states within spin-wave large-N expansions ($N$ number spin...
Aim. To assess the health-related quality of life rural and urban population in Western Siberia. Materials methods. The study was conducted by simple random sampling 205 people (97 men 108 women) from residents areas Omsk region ( n = 132) city 73). method active survey form an interview used. MOS SF-36 health questionnaire used combination with a specially developed for sociological studies populations. Results. highest scores were found on scales physical (PF), role (RF), social...
The study of the influence size magnetite and maghemite clusters on magnetic properties (magnetic moment Curie temperature, blocking etc.) is performed. For separating by size, separation centrifugation aqueous solution iron oxide nanoparticles were applied. Native particles covered with a bioresorbable layer examined. controlled change in nanoparticles' leads to their temperature moment. theoretical calculations made using Monte Carlo method for classical Heisenberg model different bulk...
The quantum Heisenberg antiferromagnet on the stacked triangular lattice with intralayer nearest-neighbor exchange interaction J and interlayer J' is considered within non-linear -model use of renormalization group (RG) approach. For asymptotic formula for Neel temperature TNeel sublattice magnetization are obtained. RG turns out to be insufficient describe experimental data since it does not take into account 2-vortices. Therefore estimated using Monte-Carlo result 2D correlation length...
Thermodynamic properties of cubic Heisenberg ferromagnets with competing exchange interactions are considered near the frustration point where coefficient D in spin-wave spectrum E k ~ Dk 2 vanishes. Within Dyson-Maleev formalism it is found that at low temperatures thermal fluctuations stabilize ferromagnetism by increasing value . For not too strong this leads to an unusual "concave" shape temperature dependence magnetization, which agreement experimental data on europium chalcogenides....
Thermodynamic properties of cubic Heisenberg ferromagnets with competing exchange interactions are considered near the frustration point where coefficient $D$ in spin-wave spectrum $E_{\mathbf{k}}\sim D k^{2}$ vanishes. Within Dyson-Maleev formalism it is found that at low temperatures thermal fluctuations stabilize ferromagnetism by increasing value $D$. For not too strong this leads to an unusual "concave" shape temperature dependence magnetization, which agreement experimental data on...
Abstract Alkyl‐germaniumtrichloride (I) bzw. Dialkylgermaniumdichloride (II) lassen sich mit Silanhydriden (III)‐(VI) reduzieren.