A5004781802- Multiferroics and related materials
- Magneto-Optical Properties and Applications
- Ferroelectric and Piezoelectric Materials
- Magnetic properties of thin films
- Magnetic and transport properties of perovskites and related materials
- Magnetic Properties and Applications
- Characterization and Applications of Magnetic Nanoparticles
- Advanced Condensed Matter Physics
- Crystal Structures and Properties
- Photonic Crystals and Applications
- Magnetic Properties and Synthesis of Ferrites
- Nanoparticle-Based Drug Delivery
- Magnetic Properties of Alloys
- Nonlocal and gradient elasticity in micro/nano structures
- 2D Materials and Applications
- Solid-state spectroscopy and crystallography
- Railway Engineering and Dynamics
- Photonic and Optical Devices
- Electronic and Structural Properties of Oxides
- Hydrogen Storage and Materials
- MXene and MAX Phase Materials
- Optical Polarization and Ellipsometry
- Photorefractive and Nonlinear Optics
- Vibration Control and Rheological Fluids
- Underwater Acoustics Research
Lomonosov Moscow State University
2015-2024
MIREA - Russian Technological University
2023-2024
Moscow State University
2008-2024
Kurchatov Institute
2018
Prokhorov General Physics Institute
2003-2016
Russian Academy of Sciences
2000-2014
Dramatically enhanced polarization has been found for (001), (101), and (111) films, relative to that of BiFeO3 crystals. The easy axis spontaneous lies close (111), the various oriented films. films grown on have a rhombohedral structure, identical single crystals; whereas (101) or (001) are monoclinically distorted from due epitaxial constraint.
The last decade has witnessed a significant growth of research into materials with coupled magnetic and electric properties. Reviewed here are the main types mechanisms magnetoelectric interactions conditions their origin. Special attention is given to potentially practical that display properties at room temperature. Example applications multiferroics in information energy saving technologies discussed.
Bismuth ferrite is a magnetoelectric material, which simultaneously has polarization and spin orders. We have used electron resonance (ESR) as local probe of the magnetic order in magnetic-field range 0--25 T, frequency domain 115--360 GHz, at temperature 4.2 K. The data reveal significant changes ESR spectra with increasing field, been analyzed by taking into account anisotropy crystal Dzyaloshinsky-Moria-like interaction. results demonstrate an induced phase transition from...
In BiFeO3 films, it has been found that epitaxial constraint results in the destruction of a space modulated spin structure. For (111)c relative to corresponding bulk crystals, is shown (i) induced magnetization enhanced at low applied fields; (ii) polarization dramatically enhanced; whereas, (iii) lattice structure for films and crystals nearly identical. Our evidence eptiaxial induces transition between cycloidal homogeneous antiferromagnetic states, releasing latent component locked...
Abstract The term ‘straintronics’ refers to a new research area in condensed matter physics, which strain engineering methods and strain-induced physical effects solids are used develop next-generation devices for information, sensor, energy-saving technologies. This paper reviews the basic ideas of straintronics, examines underlying effects, highlights its advantages over conventional electronics, identifies problems it faces fundamental constraints is subject to. Special attention given...
Based on the first-principles prediction, we report magnetoelectric coupling effect in two-dimensional multiferroic bilayer ${\mathrm{VS}}_{2}$. The ground-state $3R$-type stacking breaks space inversion symmetry, therefore introducing a spontaneous polarization perpendicular to layer plane. We further reveal that out-of-plane ferroelectric of ${\mathrm{VS}}_{2}$ can be reversed upon interlayer sliding an in-plane translation. Each has ferromagnetic state with opposite magnetic moment...
Magnetic phase transitions in multiferroic bismuth ferrite (BiFeO3) induced by magnetic field, epitaxial strain, and composition modification are considered. These from a spatially modulated spin spiral state to homogenous antiferromagnetic one accompanied tghe release of latent magnetization linear magnetoelectric effect that makes BiFeO3-based materials efficient room-temperature single multiferroics.
It has been found that aliovalent-substituted $\mathrm{Bi}\mathrm{Fe}{\mathrm{O}}_{3}\text{\ensuremath{-}}\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$-based polycrystalline materials have significantly enhanced multiferroic properties. Relative to unmodified $\mathrm{Bi}\mathrm{Fe}{\mathrm{O}}_{3}$, our results for modified ceramics reveal: (i) a dramatic increase in the electric-field-induced polarization; and (ii) establishment of remanent magnetization. The evidence destruction space-modulated...
The magnetic, electric, magnetoelectric, and magnetoelastic properties of rare-earth ferroborates RFe3(BO3)4 (R=Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er) as well yttrium ferroborate YFe3(BO3)4 have been studied comprehensively. A strong dependence not only the magnetic but also magnetoelectric on type ion, specifically, its anisotropy, which determines structure large contribution to electric polarization, has found. This is manifested in temperature polarization below Néel point TN specific field...
A two-dimensional ferromagnetic semiconductor Cr2Ge2Te6 (CGT) was recently found to possess extraordinary characteristics and has great potential in the emerging field of spintronics. Using first-principles calculations, we examined stabilities this layered system by studying cleavage energies phonon dispersion. The ground state an in-plane spin polarization bandgaps about 0.26 eV Perdew-Burke-Ernzerhof-van der Waals 0.91 Heyd-Scuseria-Ernzerhof functional. Furthermore, employed strain...
The effect of magnetic domain wall motion induced by electric field is observed in epitaxial iron garnet films grown on (210) and (110) gadolinium-gallium substrates. displacement the changes to opposite at reversal polarity, it independent polarity domains. Dynamic observation 400 V pulses gives velocity about 50 m/s. same achieved a pulse Oe. This type magnetoelectric implemented single phase material room temperature.
A prominent band centered at ∼1000–1300cm−1 and associated with resonant enhancement of two-phonon Raman scattering is reported in multiferroic BiFeO3 thin films single crystals. strong anomaly this occurs the antiferromagnetic Neel temperature, TN∼375°C. This composed three peaks, assigned to 2A4, 2E8, 2E9 modes. While all peaks were found be sensitive phase transition, 2E8 mode, particular, nearly disappears TN on heating, indicating a spin-two-phonon coupling BiFeO3.
Spiral multiferroics whose ferroelectricity is driven by spatial spin modulation attract considerable attention due to strong magnetoelectric coupling observed in them. The present paper shows that a similar mechanism involved the case of conventional micromagnetic structures such as domain walls. It shown experimentally and theoretically wall iron garnet films has electric polarization which can be switched an external magnetic field. From practical application standpoint it provides...
On the example of prototypical multiferroic bismuth ferrite microscopic origin spin flexoelectricity responsible for cycloid ordering is analyzed. It shown how three basic structural distortions corresponding to frozen-phonon modes an ideal perovskite lattice result in coexistence canting and cycloidal ordering. basis a simple formula antisymmetric Dzyaloshinskii-Moriya superexchange inhomogenous magnetoelectric contribution theromodynamic potential derived values parameters are determined.