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Article
Metamagnetic and orientational transitions in TbFeO3 orthoferrite: magnetoelectric phase diagrams
Metamagnetic and orientational phase transitions in the interacting rare-earth and iron subsystems in magnetic fields up to 5 T in the ab-plane at T = 1.85 K are studied in orthoferrite TbFeO3 with magnetic momen...
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Article
Terahertz Spectroscopy of Magnetoelectric HoAl3(BO3)4
Experimental and theoretical study of submillimeter (terahertz) spectroscopic and magnetic properties of the rare-earth aluminum borate HoAl3(BO3)4 were performed at temperatures 3–300K. In the transmittance spec...
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Article
Observation of Magnetic-Field-Induced Electric Polarization in Terbium Orthoferrite
In TbFeO3 orthoferrite at temperatures below the antiferromagnetic ordering temperature for the terbium subsystem (∼3.2 K), the electric polarization Pa(Hb) induced by a magnetic field Hb along the a axis is foun...
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Article
Magnetoelectric effect in ytterbium aluminum borate YbAl3(BO3)4
The anisotropic magnetoelectric properties of an ytterbium aluminum borate YbAl (BO single crystal having noncentrosymmetric crystal structure (space group R32) are studied, including the orientational, field,...
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Article
Magnetic and magnetoelectric properties of substituted M-type SrSc x Fe12 – x O19 hexaferrites
The anisotropic magnetic and magnetoelectric properties of single crystals of substituted M-type SrSc x Fe12 – x O19 (x = 1.4–1.7) hexaferrites ar...
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Article
Magnetic and magnetoelectric properties of M-type substitution hexaferrites TSc x Fe12 − x O19 (T = Ba, Sr)
Single crystals of M-type substitution hexaferrites BaSc x Fe12 − x O19 and SrSc x Fe12 − x O19 (x = 1.3–1.7) ha...
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Article
Magnetic and magnetoelectric properties of terbium aluminum borate
The magnetic and magnetoelectric properties of terbium aluminum borate are studied. It is established that temperature dependences of the magnetoelectric effects of terbium aluminum borate are analogous to tho...
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Article
Spontaneous reorientation of the electric polarization in Eu1 − x Ho x MnO3 multiferroics
The magnetic, dielectric, and ferroelectric properties of Eu1 − x Ho x MnO3 single crystals (0 < x ≤ 0.5), where magnetic ordering can be varied from the canted a...
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Article
Microstructure of eutectic composites Ln 1−x Ln′ x MnO3 (Ln = Eu or Tb; Ln′ = Y or Ho) near the transition between the orthorhombic structure and hexagonal structures
Multiferroic crystals Ln 1 − x MnO3 (Ln = Eu or Tb; Ln′ = Y or Ho) have been grown by floating-zone melting; the compositions of these crystals are close to the point of concentra...
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Article
Magnetoelectric and magnetoelastic properties of easy-plane ferroborates with a small ionic radius
The magnetic, magnetoelectric, and magnetoelastic properties of RFe3(BO3)4 ferroborates are studied. The measurement of the field dependences of the magnetoelectric polarization along the a axis in holmium ferrob...
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Article
Neutron powder diffraction and single crystal X-ray magnetic resonant and non-resonant scattering studies of the doped multiferroic Tb(Bi)MnO3
The results of powder neutron diffraction, X-ray resonant and non-resonant scattering in Tb0.95Bi0.05MnO3 demonstrate that substitution of Bi for Tb leads to partial suppression of intrinsic long-range magnetic ...
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Article
Effects of the interaction between R and Fe modes of the magnetic resonance in RFe3(BO3)4 rare-earth iron borates
Resonance modes that are due to magnetic excitations in the exchange-coupled subsystems of rare-earth ions (R = Nd3+, Sm3+, and Gd3+) and Fe3+ ions have been detected in submillimeter transmission spectra (0.1–0....
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Article
Antiferromagnetic resonance and dielectric properties of rare-earth ferroborates in the submillimeter frequency range
The magnetoresonance and dielectric properties of a number of crystals of a new family of multiferroics, namely, rare-earth ferroborates RFe3(BO3)4 (R = Y, Eu, Pr, Tb, Tb0.25Er0.75), are studied in the sub-millim...
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Article
Colossal magnetodielectric effect in SmFe3(BO3)4 multiferroic
The colossal (more than threefold) decrease in the dielectric constant ɛ in the easy-plane SmFe3(BO3)4 ferroborate in a magnetic field of ∼5 kOe applied in the basal ab plane of the crystal has been found. A clos...
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Article
High-frequency electromagnon in GdMnO3
Results of far-infrared transmittance are reported for GdMnO3, a multiferroic perovskite manganite. The spectra allow to obtain position and intensity of the high-frequency electromagnon (~75 cm-1) in this mater...
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Article
Spin-phonon coupling in multiferroic manganites RMnO3: comparison of pure (R = Eu, Gd, Tb) and substituted (R = Eu1- x Y x ) compounds
For rare-earth manganite RMnO3 compounds spin-phonon coupling manifests itself as a phonon softening in the temperature range of the magnetically ordered phases. Within this class of materials, a continuous tuni...
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Article
Peculiarities in the magnetic, magnetoelectric, and magnetoelastic properties of SmFe3(BO3)4 multiferroic
Results of a complex investigation of the magnetic, magnetoelectric, and magnetoelastic properties of a SmFe3(BO3)4 single crystal are presented. Samarium iron borate is similar to another easy-plane iron borate,...
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Article
On the room temperature multiferroic BiFeO3: magnetic, dielectric and thermal properties
Magnetic dc susceptibility between 1.5 and 800 K, ac susceptibility and magnetization, thermodynamic properties, temperature dependence of radio and audio-wave dielectric constants and conductivity, contact-f...
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Article
Magnetic and dielectric properties of orthorhombic and hexagonal multiferroics Tb1 − x Y x MnO3
The transition from a stable orthorhombic structure to a hexagonal structure has been revealed in Tb1−x Y x MnO3 multiferroics at x = 0.2–0.4. It has been...
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Article
Lattice dynamics of Eu1-xYxMnO3 (0 ≤ x ≤ 0.5)
A systematic and detailed study of Raman and infrared active lattice excitations in the orthorhombic multiferroic manganite Eu1−xYxMnO3 (0 ≤ x ≤ 0.5) was carried out at room temperature. For the infrared active p...