48 Result(s)
within
A. A. Mukhin
Physics
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Article
Magnetic and ferroelectric properties of exchange-frustrated multiferroics (Ni1 − x T x )3V2O8 (T = Co, Mn, Zn)
The effect of the substitution of Co2+, Mn2+, and Zn2+ ions for Ni2+ ions on the magnetic, dielectric, and ferroelectric properties of vanadate single crystals (Ni1 − x T ...
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Article
Far-infrared optical excitations in multiferroic TbMnO3
We provide a detailed study of the reflectivity of multiferroic TbMnO3 for wave numbers from 40 cm-1 to 1000 cm-1 and temperatures 5 K < T < 300 K. Excitations are studied for polarization directions E || a, the ...
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Article
Magnetic anisotropy and magnetoelectric properties of Tb1 − x Er x Fe3(BO3)4 ferroborates
Magnetic and magnetoelectric properties of ferroborate single crystals with complex composition (Tb1 − x Er x Fe3(BO3)4, x = 0, 0.75) and with competing e...
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Article
On the effect of inhomogeneous magnetoelectric (flexomagnetoelectric) interaction on the spectrum and properties of magnons in multiferroics
The features of the magnon spectrum in easy-plane multiferroics (such as BiFeO3), which allow inhomogeneous magnetoelectric (flexomagnetoelectric) interaction P[(L∇)L − LdivL], where L and P are the antiferromagn...
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Article
Observation of spontaneous spin reorientation in Nd1 − x Dy x Fe3(BO3)4 ferroborates with a competitive R-Fe exchange
The magnetic, magnetoelectric, and magnetoelastic properties of DyFe3(BO3)4 single crystals and the Nd0.75Dy0.25Fe3(BO3)4 substituted compound with the competitive Nd-Fe and Dy-Fe exchange interactions have been ...
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Article
Magnetoelectric interactions and phase transitions in a new class of multiferroics with improper electric polarization
Symmetry analysis of magnetoelectric interactions in rare-earth orthoferrites and orthochromites has been performed. It has been shown that symmetry allows the appearance of spontaneous electric polarization o...
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Article
A terahertz spectrometer with a pulsed high magnetic field
A terahertz (THz) spectrometer based on backward-wave tubes and combined with a pulsed-magnetic-field generator with a pulse duration of ∼100 μs and an amplitude of up to 50 T is described. This spectrometer i...
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Article
Influence of the ground state of the Pr3+ ion on magnetic and magnetoelectric properties of the PrFe3(BO3)4 multiferroic
The magnetic, magnetoelectric, and magnetoelastic properties of a PrFe3(BO3)4 single crystal and the phase transitions induced in this crystal by the magnetic field are studied both experimentally and theoretical...
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Article
Magnetoelectric phenomena in manganites R0.6Ca0.4MnO3(R = Pr, Nd) with charge ordering suppressed by a magnetic field
A change in electric polarization (up to 300 μC/m2) upon magnetic-field suppression of a charge-ordered antiferromagnetic state upon a transition to the ferromagnetic conducting phase (H c...
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Article
Phase transitions and spin excitations in new multiferroics with modulated magnetic structure
Coexistence of an antiferromagnetic (modulated) structure and electric polarization has been revealed in single crystals of Eu1 − x YxMnO3 (0.2 ≤ x ≤ 0.5) and Gd1 − x YxMnO3 (0 ≤ x
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Article
Switching of spontaneous electric polarization in the DyMnO3 multiferroic
For the DyMnO3 multiferroic with a modulated magnetic structure, switching of its spontaneous electric polarization (P ‖ c axis) near the ferroelectric transition (T < T ...
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Article
Phase transitions induced by a strong magnetic field in electron-doped manganites
The magnetic and magnetoelastic properties of single crystals of electron-doped rare-earth manganites La1−x Sr x MnO3 are studied. Phase transitions from the A-ty...
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Article
Raman study of orbital mediated multiphonons in RMnO3 (R = Pr,Sm,Eu,Tb,Y)
We have studied RMnO3 manganites (R = Pr, Sm, Eu, Tb, Y) Raman excitations in the 200–2800 cm-1 range as a function of temperature. Combinations of phonon energies are observed up to the fourth order, indicating...
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Article
Magnetic properties and phase transitions in hexagonal DyMnO3 single crystals
DyMnO3 single crystals of hexagonal modification were grown for the first time by zone melting, and their anisotropic magnetic properties were studied in detail. At T ∼ 7 K, a small uncompensated magnetic moment ...
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Article
Possible evidence for electromagnons in multiferroic manganites
Magnetodielectric materials are characterized by a strong coupling of the magnetic and dielectric properties and, in rare cases, simultaneously show both magnetic and polar order. Among other multiferroics, TbMnO
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Article
Observation of electric polarization in Gd1−x SrxMnO3 (x = 0.5, 0.6, 0.7) single crystals
In Gd1−x SrxMnO3 (x = 0.5, 0.6, 0.7) single crystals, a change in electric polarization (ΔP ∼ 100 μK/m2) is found to accompany the suppression of the charge-ordered spin-glass state and the transition to the ferr...
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Article
Specific features of the magnetic field-induced orientational transition in EuMnO3
It is found that the spin-flop transition in EuMnO3 manganite induced by a magnetic field H parallel to the b axis is accompanied not only by a magnetization jump and magnetostriction anomalies but also by the ap...
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Article
Specificity of magnetoelectric effects in a new GdMnO3 magnetic ferroelectric
A complex study of the magnetic, electric, magnetoelectric, and magnetoelastic properties of GdMnO3 single crystals has been performed in the low-temperature region in strong pulsed magnetic fields up to 200 kOe....
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Article
Anomalies in the magnetic and magnetoelastic properties of Nd1−x CaxMnO3 single crystals in strong magnetic fields
Measurements of the magnetic and magnetoelastic properties of Nd0.5Ca0.5MnO3, Nd0.55Ca0.45MnO3, and Nd0.6Ca0.4MnO3 single crystals have revealed correlations between the observed anomalies in magnetization and ma...
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Article
Anomalies in the magnetic and magnetoelastic properties of Sm1−x SrxMnO3 single crystals (x ∼ 0.5) at phase transitions
By studying the magnetic and magnetoelastic properties, it is established that, as the temperature is lowered, Sm1−x SrxMnO3 single crystals (x=0.5, 0.55) undergo spontaneous phase transitions from the paramagnet...
