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Aplesnin, S. S.
Magnetocapacitance effect in GdxMn1–xS / S. S. Aplesnin, M. N. Sitnikov // Phys. Solid State. - 2016. - Vol. 58, Is. 6. - P. 1148-1153, DOI 10.1134/S1063783416060032. - Cited References: 15. - This study was supported by the Russian Foundation for Basic Research (project no. 15-42-04099 r_si-bir_a) and the Ministry of Education and Science of the Russian Federation (state contract no. 114090470016). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
Ferroelectricity
Аннотация: The capacitance and dielectric loss tangent of GdxMn1–xS (x ≤ 0.2) solid solutions have been measured at a frequency of 10 kHz without magnetic field and in a magnetic field of 8 kOe in the temperature range of 90–450 K. An increase in the permittivity and a dielectric loss maximum have been detected in the low-temperature region. It has been found that the temperature of the maximum of the imaginary part of the permittivity shifts to higher temperatures with increasing concentration. The magnetocapacitance effect has been revealed for two compositions. The dielectric loss has been described in the Debye model with “freezing” dipole moments and in the orbital-charge ordering model.

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Публикация на русском языке Аплеснин, Сергей Степанович. Магнитоемкостный эффект в GdxMn1-xS [Текст] / С. С. Аплеснин, М. Н. Ситников // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2016. - Т. 58 Вып. 6. - С. 1112–1117

Держатели документа:
Reshetnev Siberian State Aerospace University, pr. Krasnoyarskii Rabochii 31, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Science, Akademgorodok 50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sitnikov, M. N.; Аплеснин, Сергей Степанович
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    Effects of the Interaction between R and Fe Modes of the Magnetic Resonance in RFe3(BO3)(4) Rare-Earth Iron Borates / A. M. Kuz'menko [et al.] // JETP Letters. - 2011. - Vol. 94, Is. 4. - P. 294-300, DOI 10.1134/S0021364011160119. - Cited References: 27. - We are grateful to A. S. Prokhorov for discussion of this work and valuable comments. This work was supported by the Russian Foundation for Basic Research, project nos. 10-02-00846 and 09-02-01355, and the Ministry of Education and Science of the Russian Federation, project no. 16.518.11.7034. . - ISSN 0021-3640
Рубрики:
MULTIFERROICS
   GDFE3(BO3)(4)
   FERROELECTRICITY
Аннотация: 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 (0.1-0.6 THz) of RFe3(BO3)(4) iron borate-multiferroic single crystals. The strong interaction between spin oscillations of the Fe and R subsystems has been revealed, which determines the behavior of the modes depending on the anisotropy of the exchange splitting of the ground doublet of the R ion. It has been shown that the intensities of coupled modes (contributions to the magnetic permeability) depend strongly on the difference between the g factors of Fe and R ions. This dependence makes it possible to determine the sign of the latter g factor. In particular, a noticeable intensity of exchange Nd modes in NdFe3(BO3)(4) is due to an increase in their contribution at g(perpendicular to,parallel to)(Nd) 0, while in GdFe3(BO3)(4) with g(Gd) approximate to g(Fe) approximate to 2, the Fe and Gd contributions compensate each other and the exchange (Gd) mode is not observed. In spite of the weak interaction of Sm ions with the magnetic field, SmFe3(BO3)(4) exhibits resonance modes, which are attributed to the excitation of Sm ions through the Fe subsystem. DOI: 10.1134/S0021364011160119

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Публикация на русском языке Эффекты взаимодействия R- и Fe-мод магнитного резонанса в редкоземельных ферроборатах RFe3(BO3) 4 [Текст] / А. М. Кузьменко [и др.] // Письма в "Журн. эксперим. и теор. физ.". - 2011. - Т. 94 Вып. 3-4. - С. 318-324

Держатели документа:
[Kuz'menko, A. M.
Mukhin, A. A.
Ivanov, V. Yu.] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia
[Kadomtseva, A. M.] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[Bezmaternykh, L. N.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow 119991, Russian Federation
Moscow State University, Moscow 119992, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Kuz'menko, A. M.; Mukhin, A. A.; Ivanov, V. Y.; Kadomtseva, A. M.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
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Giant magnetoelectric effect in HoAl3(BO3)(4) / K. C. Liang [et al.] // Phys. Rev. B. - 2011. - Vol. 83, Is. 18. - Ст. 180417, DOI 10.1103/PhysRevB.83.180417. - Cited References: 29. - This work was supported by the DOE, the AFOSR, the T.L.L. Temple Foundation, the J.J. and R. Moores Endowment, and the State of Texas through the Texas Center for Superconductivity at the University of Houston. . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
ELECTRIC POLARIZATION
   SINGLE-CRYSTALS
   MULTIFERROICS
   FERROELECTRICITY
   GDFE3(BO3)(4)
   TEMPERATURE
   TBPO4
Аннотация: A giant magnetoelectric polarization is found in HoAl3(BO3)(4). The polarization in transverse field geometry at 70 kOe reaches 3600 mu C/m(2), which is significantly higher than reported values of linear magnetoelectric or even multiferroic compounds. The magnetostrictive effect is also measured and compared with the magnetoelectricity. The results show that spin-lattice coupling in HoAl3(BO3)(4) is extremely strong and that the magnetic field causes a large polar distortion of the ionic positions in the unit cell.

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Держатели документа:
[Liang, K. -C.
Chaudhury, R. P.
Lorenz, B.
Sun, Y. Y.
Chu, C. W.] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA
[Liang, K. -C.
Chaudhury, R. P.
Lorenz, B.
Sun, Y. Y.
Chu, C. W.] Univ Houston, Dept Phys, Houston, TX 77204 USA
[Bezmaternykh, L. N.
Temerov, V. L.] Russian Acad Sci, Siberian Div, Inst Phys, Krasnoyarsk 660036, Russia
[Chu, C. W.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
ИФ СО РАН
Texas Center for Superconductivity, University of Houston and Department of Physics, University of Houston, Houston, TX 77204-5002, United States
Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States

Доп.точки доступа:
Liang, K. C.; Chaudhury, R. P.; Lorenz, B.; Sun, Y. Y.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович; Chu, C. W.
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Colossal magnetodielectric effect in SmFe3(BO3)(4) multiferroic / A. A. Mukhin [et al.] // JETP Letters. - 2011. - Vol. 93, Is. 5. - P. 275-281, DOI 10.1134/S0021364011050079. - Cited References: 17. - We are grateful to A.K. Zvezdin and A.P. Pyatakov for the discussion of this work and valuable comments. This work was supported by the Russian Foundation for Basic Research, project nos. 10-02-00846 and 09-02-01355. . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
FERROELECTRICITY
MAGNETOSTRICTION
GARNETS
Аннотация: The colossal (more than threefold) decrease in the dielectric constant E in the easy-plane SmFe3(BO3)(4) ferroborate in a magnetic field of similar to 5 kOe applied in the basal ab plane of the crystal has been found. A close relation of this effect to anomalies in the field dependence of the electric polarization has been established. It has been shown that this magnetodielectric effect is due to the contribution to E from the electric susceptibility, which is related to the rotation of spins in the ab plane, arises in the region of the antiferromagnetic ordering T T (N) and electric polarization in the magnetic field has been proposed, taking into account the additional anisotropy in the basal plane induced by the magnetoelastic stresses.

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Держатели документа:
[Mukhin, A. A.
Ivanov, V. Yu.
Kuz'menko, A. M.] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia
[Vorob'ev, G. P.
Kadomtseva, A. M.
Narizhnaya, A. S.
Popov, Yu. F.] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[Bezmaternykh, L. N.
Gudim, I. A.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 880036, Russia
ИФ СО РАН
Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow 119991, Russian Federation
Moscow State University, Moscow 119992, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 880036, Russian Federation

Доп.точки доступа:
Mukhin, A. A.; Vorob'ev, G. P.; Ivanov, V. Y.; Kadomtseva, A. M.; Narizhnaya, A. S.; Kuz'menko, A. M.; Popov, Y. F.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна
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Magnetic structure of the field-induced multiferroic GdFe3(BO3)(4) / H. D. Mo [et al.] // Phys. Rev. B. - 2008. - Vol. 78, Is. 21. - Ст. 214407, DOI 10.1103/PhysRevB.78.214407. - Cited References: 35. - We thank W. Schoenig, D. Coburn, S. Wilkins, and J. Hill for their support at X22C, S. LaMarra for his support at X21, and D. Connor for a critical reading of the manuscript. Use of the National Synchrotron Light Source, Brookhaven National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)(4)
   X-RAY-SCATTERING
   POLARIZATION DEPENDENCE
   EXCHANGE SCATTERING
   RESONANCE
   FERROELECTRICITY
Кл.слова (ненормированные):
ferromagnetic materials -- gadolinium compounds -- iron compounds -- magnetic structure -- multiferroics -- Neel temperature -- spin dynamics -- X-ray scattering
Аннотация: We report a magnetic x-ray scattering study of the field-induced multiferroic GdFe3(BO3)(4). Resonant x-ray magnetic scattering at the Gd L-II,L-III edges indicates that the Gd moments order at T-N approximate to 37 K. The magnetic structure is incommensurate below T-N, with the incommensurability decreasing monotonically with decreasing temperature until a transition to a commensurate magnetic phase is observed at T approximate to 10 K. Both the Gd and Fe moments undergo a spin reorientation transition at T-SR approximate to 9 K such that the moments are oriented along the crystallographic c axis at low temperatures. With magnetic field applied along the a axis, our measurements suggest that the field-induced polarization phase has a commensurate magnetic structure with Gd moments rotated similar to 45 degrees toward the basal plane, which is similar to the magnetic structure of the Gd subsystem observed in zero field between 9 and 10 K, and the Fe subsystem has a ferromagnetic component in the basal plane.

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Держатели документа:
[Mo, Haiding
Nelson, Christie S.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA
[Bezmaternykh, Leonard N.
Temerov, V. T.] RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY 11973, United States
L. V. Kirensky Institution of Physics, Siberian Branch of RAS, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Mo, H. D.; Nelson, C. S.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. T.
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Zinenko, V. I.
Lattice dynamics of MF3 crystals (M = Al, Ga, and In) / V. I. Zinenko, N. G. Zamkova // Phys. Solid State. - 2000. - Vol. 42, Is. 7. - P. 1348-1353, DOI 10.1134/1.1131391. - Cited References: 11 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
RAMAN-SCATTERING
   FERROELECTRICITY
   BATIO3
   PBTIO3
Аннотация: The phonon spectra, Born effective charges, and dielectric constants epsilon(infinity) for the square AlF3, square GaF3, and square InF3 crystals (where is a vacancy) have been calculated in terms of the generalized Gordon-Kim method. The calculated spectra of lattice vibrations contain no imaginary vibrational frequencies. This suggests the stability of the cubic phase of these compounds but contradicts the observable structural transition from cubic to rhombohedral phase. It is assumed that such a transition in the square AlF3, square GaF3, and square InF3 crystals is brought about by structural defects. The calculated spectrum of lattice vibrations of the "completely defective" crystal M square F-3 (M = Al, Ga, and In) indicates a strong instability of the cubic phase. Within the mean crystal approximation, the cubic phase of M-x M1 - xF3 crystals appears to be unstable at small x less than or equal to 0.05. (C) 2000 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Zamkova, N. G.; Замкова, Наталья Геннадьевна; Зиненко, Виктор Иванович
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Magnetic ground state of the Ising-like antiferromagnet DyScO3 / L. S. Wu [et al.] // Phys. Rev. B. - 2017. - Vol. 96, Is. 14. - Ст. 144407, DOI 10.1103/PhysRevB.96.144407. - Cited References:37. - We thank J. M. Sheng and Q. Zhang for the help with the neutron data refinement. We would like to thank A. Christianson, I. Zaliznyak, M. Mourigal, Z. T. Wang, and C. Batista for useful discussions. The research at the Spallation Neutron Source (ORNL) is supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE). Research supported in part by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy. This work was partly supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Materials Science and Engineering Division. . - ISSN 2469-9950. - ISSN 2469-9969

РУБ Physics, Condensed Matter
Рубрики:
THIN-FILMS
   FERROELECTRICITY
   VISUALIZATION
   EXCITATIONS
Аннотация: We report on the low-temperature magnetic properties of the DyScO3 perovskite, which were characterized by means of single crystal and powder neutron scattering, and by magnetization measurements. Below TN = 3.15 K, Dy3+ moments form an antiferromagnetic structure with an easy axis of magnetization lying in the ab plane. The magnetic moments are inclined at an angle of ∼ +/- 28 degrees to the b axis. We show that the ground-state Kramers doublet of Dy3+ is made up of primarily |+/- 15/2 ⟩ eigenvectors and well separated by a crystal field from the first excited state at E1 = 24.9 meV. This leads to an extreme Ising single-ion anisotropy, M⊥/M∥∼ 0.05. The transverse magnetic fluctuations, which are proportional to M⊥2/M∥2, are suppressed, and only moment fluctuations along the local Ising direction are allowed. We also found that the Dy-Dy dipolar interactions along the crystallographic c axis are two to four times larger than in-plane interactions.

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Держатели документа:
Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany.
Tech Univ Dresden, Inst Festkorper & Mat Phys, D-01069 Dresden, Germany.
Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
Fed Res Ctr SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Oak Ridge Natl Lab, Neutron Data Anal & Visualizat Div, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.

Доп.точки доступа:
Wu, L. S.; Nikitin, S. E.; Frontzek, M.; Kolesnikov, A. I.; Ehlers, G.; Lumsden, M. D.; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Guo, E. -J.; Savici, A. T.; Gai, Z.; Sefat, A. S.; Podlesnyak, A.; Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE); Laboratory Directed Research and Development Program of Oak Ridge National Laboratory; U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Materials Science and Engineering Division
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