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Antiferromagnetic resonance and phase diagrams of gadolinium ferroborate GdFe3(BO3)(4) / A. I. Pankrats [et al.] // J. Exp. Theor. Phys. - 2004. - Vol. 99, Is. 4. - P. 766-775, DOI 10.1134/1.1826168. - Cited References: 16 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary

Кл.слова (ненормированные):
Anisotropy -- Antiferromagnetic materials -- Antiferromagnetism -- Phase diagrams -- Resonance -- Single crystals -- Antiferromagnetic resonance -- Antiferromagnets -- Crystal axis -- Transition fields -- Gadolinium compounds
Аннотация: Antiferromagnetic resonance in single crystals of rhombohedral gadolinium ferroborate GdFe3(BO3)(4) was studied. The frequency-field dependences of antiferromagnetic resonance over the frequency range 26-70 GHz and the temperature dependences of resonance parameters for magnetic fields oriented along the crystal axis and in the basal plane were determined. It was found that the iron subsystem, which can be treated as a two-sublattice antiferromagnet with anisotropy of the easy-plane type, experienced ordering at T = 38 K. At temperatures below 20 K, the gadolinium subsystem with the opposite anisotropy sign strongly influenced the anisotropic properties of the crystal. This resulted in a spontaneous spin-reorientation transition from the easy-plane to the easy-axis state at 10 K. Below 10 K, magnetic field-induced transitions between the states were observed. Experimental phase diagrams on the temperature-magnetic field plane were constructed for fields oriented along the crystal axis and in the basal plane. A simple model was used to calculate the critical transition fields. The results were in close agreement with the experimental values measured at T = 4.2 K for both field orientations. (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич
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Investigation of the anomalies of the magnetoelectric and magnetoelastic properties of single crystals of the ferroborate GdFe3(BO3)(4) at phase transitions / A. M. Kadomtseva [et al.] // Low Temp. Phys. - 2005. - Vol. 31, Is. 8-9. - P. 807-813 ; Физика низких температур, DOI 10.1063/1.2008142. - Cited References: 14 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
IRON BORATE GDFE3(BO3)(4)
OPTICAL SPECTROSCOPY
Аннотация: The transformation of various properties of gadolinium ferroborate single crystals at phase transitions, both spontaneous and induced by magnetic fields up to 200 kOe, is investigated theoretically and experimentally. Particular attention is paid to elucidating the role of magnetoelectric interactions and the change in them at spin-reorientation transitions accompanied by a change of magnetic symmetry. With that goal the magnetoelastic and magnetoelectric properties of the system are investigated over a wide range of temperatures for two orientations of the magnetic field, H parallel to c and H perpendicular to c, and a fundamental difference of the character of the field dependences of the magnetostriction and electric polarization is found. In the framework of a symmetry approach a description of the magnetic structures and their transformations in the system GdFe3(BO3)(4) is proposed, and an interpretation of the experimentally observed properties is given. (C) 2005 American Institute of Physics.

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Держатели документа:
Moscow MV Lomonosov State Univ, Moscow 119992, Russia
Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
Russian Acad Sci, LV Kirensky Inst Gen Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
M. V. Lomonosov Moscow State University, Vorob'evy gory, Moscow 119992, Russian Federation
Institute of General Physics, Russian Academy of Sciences, Moscow 119991, Russian Federation
L. V. Kirensky Institute of General Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Kadomtseva, A. M.; Popov, Y. F.; Krotov, S. S.; Vorob'ev, G. P.; Popova, E. A.; Zvezdin, A. K.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич

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Magnetic and thermal properties of single-crystal NdFe3(BO3)(4) / E. A. Popova [et al.] // J. Exp. Theor. Phys. - 2007. - Vol. 105, Is. 1. - P. 105-107, DOI 10.1134/S1063776107070229. - Cited References: 4 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary

Кл.слова (ненормированные):
Antiferromagnetism -- Magnetic field effects -- Magnetic properties -- Rare earths -- Single crystals -- Thermodynamic properties -- Antiferromagnetic transition -- Crystallographic axes -- Kramers doublet -- Neodymium ferroborate -- Neodymium compounds
Аннотация: The neodymium ferroborate NdFe3(BO3)(4) undergoes an antiferromagnetic transition at T-N = 30 K, which manifests itself as a lambda-type anomaly in the temperature dependence of the specific heat C and as inflection points in the temperature dependences of the magnetic susceptibility chi measured at various directions of an applied magnetic field with respect to the crystallographic axes of the sample. Magnetic ordering occurs only in the subsystem of Fe3+ stop ions, whereas the subsystem of Nd3+ stop ions remains polarized by the magnetic field of the iron subsystem. A change in the population of the levels of the ground Kramers doublet of neodymium ions manifests itself as Schottky-type anomalies in the C(T) and chi(T) dependences at low temperatures. At low temperatures, the magnetic properties of single-crystal NdFe3(BO3)(4) are substantially anisotropic, which is determined by the anisotropic contribution of the rare-earth subsystem to the magnetization. The experimental data obtained are used to propose a model for the magnetic structure of NdFe3(BO3)(4).

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Держатели документа:
Moscow MV Lomonosov State Univ, Moscow 119992, Russia
IFW Dresden, Leibniz Inst Solid State & Mat Res, D-01171 Dresden, Germany
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Moscow State University, Moscow 119992, Russian Federation
Leibniz-Institute for Solid State and Materials Research, IFW Dresden, 01171, Germany
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Popova, E. A.; Tristan, N.; Hess, C.; Klingeler, R.; Buchner, B.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович; Vasil'ev, A. N.
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Magnetoelastic effects in terbium ferroborate / G. A. Zvyagina [et al.] // Low Temp. Phys. - 2008. - Vol. 34, Is. 11. - P. 901-908 ; Физика низких температур, DOI 10.1063/1.3009584. - Cited References: 17 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
CRYSTAL-STRUCTURE
ND
Кл.слова (ненормированные):
acoustic wave velocity -- antiferromagnetic materials -- elastic moduli -- exchange interactions (electron) -- iron compounds -- magnetoelastic effects -- solid-state phase transformations -- terbium compounds
Аннотация: The behavior of the elastic moduli and sound absorption in a terbium orthoborate single crystal at low temperatures is studied. The components of the tensor of the elastic moduli of this system are determined. A structural phase transition and a transition of the magnetic subsystem into an antiferromagnetically ordered state appear in the temperature dependences of the sound velocities and absorption. The magnetic field dependences of the velocities of transverse sound exhibit singularities in the form of jumps at a magnetic field equal to the field of the spin-flop transition of the antiferromagnetic subsystem. Theoretical analysis shows that the observed behavior of the acoustic characteristics are associated not with the rare-earth subsystem of ferroborate but rather with the renormalization of the exchange interaction between iron ions as a result of the magnetoelastic coupling.

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Держатели документа:
[Zvyagina, G. A.
Zhekov, K. R.
Bilych, I. V.
Zvyagin, A. A.] Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
[Bezmaternykh, L. N.
Gudim, I. A.] Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
B. I. Verkin Institute for Low-Temperature Physics and Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine
L. V. Kirenskii Institute of Physics, Siberian Branch, Russian Adcademy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Zvyagina, G. A.; Zhekov, K. R.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Bilych, I. V.; Zvyagin, A. A.

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Low-temperature magnetic phase diagram of HoFe3(BO3)(4) holmium ferroborate: a magnetic and heat capacity study / A. . Pankrats [et al.] // J. Phys.: Condens. Matter. - 2009. - Vol. 21, Is. 43. - Ст. 436001, DOI 10.1088/0953-8984/21/43/436001. - Cited References: 20 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTAL
DYFE3(BO3)(4)
ND3+
Кл.слова (ненормированные):
Antiferromagnetic state -- Applied magnetic fields -- Characteristic temperature -- Crystal axis -- Heat capacities -- Low temperatures -- Magnetic field parallel -- Magnetic phase diagrams -- Magnetic phase transitions -- Magnetization jump -- Schottky anomaly -- Spin reorientation transitions -- Thermal measurements -- Antiferromagnetic materials -- Antiferromagnetism -- Holmium -- Magnetic fields -- Phase diagrams -- Single crystals -- Specific heat -- Phase transitions
Аннотация: We present the results of the magnetic and heat capacity study of a magnetic phase diagram of a HoFe3(BO3)(4) single crystal. Two magnetic phase transitions are found in the low-temperature region. The transition from the paramagnetic to easy-plane antiferromagnetic state occurs at T-N = 37.4 K and is independent of an applied magnetic field. The sharp heat capacity peaks and magnetization jumps corresponding to the spontaneous and field-induced spin-reorientation transitions between the easy-axis and easy-plane states are observed below 4.7 K. Also, the additional heat capacity peaks, which can be attributed to the Schottky anomalies with the field-dependent characteristic temperatures, are found. According to the magnetic and thermal measurement data, the magnetic phase diagrams of HoFe3(BO3)(4) for the magnetic field parallel and perpendicular to the crystal axis are constructed.

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Держатели документа:
[Pankrats, A.
Petrakovskii, G.
Kartashev, A.
Eremin, E.
Temerov, V.] SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Petrakovskii, G.] Siberian Fed Univ, Dept Phys, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, SB RAS, 660036 Krasnoyarsk, Russian Federation
Department of Physics, Siberian Federal University, 660041 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Kartashev, A.; Eremin, E. V.; Еремин, Евгений Владимирович; Temerov, V. L.; Темеров, Владислав Леонидович
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Low-temperature behavior of the magnetoelastic characteristics of praseodymium ferroborate / G. A. Zvyagina [et al.] // Low Temp. Phys. - 2010. - Vol. 36, Is. 4. - P. 296-302 ; Физика низких температур, DOI 10.1063/1.3420962. - Cited References: 16 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
CRYSTAL
STATE
ND
Аннотация: The behavior of the elastic moduli and sound absorption in a PrFe(3)(BO(3))(4) single crystal at low temperatures is studied. A transition of the magnetic subsystem into an antiferromagnetically ordered state is manifested in the temperature behavior of the sound velocities and absorption. The characteristic behavior of the elastic properties of PrFe(3)(BO(3))(4) in an external magnetic field is observed. A phenomenological theory that gives a qualitative description of the observed features is constructed. It is proposed that a weak magnetic moment exists in the crystal. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3420962]

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Держатели документа:
[Zvyagina, G. A.
Zhekov, K. R.
Bilych, I. V.
Zvyagin, A. A.] Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
[Zvyagin, A. A.] Tech Univ Dresden, Inst Solid State Phys, D-01069 Dresden, Germany
[Bezmaternykh, L. N.
Gudim, I. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
B. I. Verkin Inst. for Low-Temperature Physics, Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine
B. I. Verkin Inst. for Low-Temperature Physics, Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine
Institute for Solid State Physics, Technical University Dresden, Dresden D-01069, Germany
L. V. Kirenskii Inst. of Physics of the Siberian Branch, The Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Zvyagina, G. A.; Zhekov, K. R.; Bilych, I. V.; Zvyagin, A. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна

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Low-temperature phase transitions in the rare-earth ferroborate Nd0.75Dy0.25Fe3(BO3)(4) / G. A. Zvyagina [et al.] // Low Temp. Phys. - 2010. - Vol. 36, Is. 3. - P. 279-281 ; Физика низких температур, DOI 10.1063/1.3331632. - Cited References: 10 . - ISSN 1063-777X

РУБ Physics, Applied

Аннотация: The low-temperature behavior of the elastic characteristics of a Nd0.75Dy0.25Fe3(BO3)(4) single crystal has been studied. Features are found in the temperature and magnetic-field dependences of the velocity and absorption of transverse sound. These features are interpreted as being a manifestation of magnetic phase transitions in the compound studied. The H-T phase diagram is constructed. (c) 2010 American Institute of Physics. [doi:10.1063/1.3331632]

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Держатели документа:
[Zvyagina, G. A.
Zhekov, K. R.
Bilych, I. V.
Zvyagin, A. A.] Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
Gudim, I. A.] Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Zvyagina, G. A.; Zhekov, K. R.; Bilych, I. V.; Zvyagin, A. A.; Bezmaternykh, L. N.; Gudim, I. A.; Гудим, Ирина Анатольевна

}
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Antiferromagnetic resonance in ferroborate NdFe3(BO3)(4) / M. I. Kobets, K. G. Dergachev, E. N. Khatsko [et al.] // Physica B. - 2011. - Vol. 406, Is. 18. - P. 3430-3435, DOI 10.1016/j.physb.2011.06.014. - Cited Reference Count: 19 . - SEP 15. - ISSN 0921-4526. - ISSN 1873-2135
Рубрики:
Physics, Condensed Matter
Кл.слова (ненормированные):
antiferromagnet -- resonance -- multiferroics -- commensurate-incommensurate phase
Аннотация: The AFMR spectra of the NdFe3(BO3)(4) crystal are measured in a wide range of frequencies and temperatures. It is found that by the type of its magnetic anisotropy the compound is an easy-plane antiferromagnet with a weak anisotropy in the basal plane. The effective magnetic parameters are determined: anisotropy fields H-a1 = 1.14 kOe and H-a2 = 60 kOe and magnetic excitation gaps Delta v(1) = 101.9 GHz and Delta v(2) = 23.8 GHz. It is shown that commensurate-incommensurate phase transition causes a shift in resonance field and a considerable change in absorption line width. At temperatures below 4.2 K nonlinear regimes of AFMR excitation at low microwave power levels are observed. (C) 2009 Elsevier B.V. All rights reserved.

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Держатели документа:
Natl Acad Sci, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine;
L V Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Kobets, M.I.; Dergachev, K.G.; Khatsko, E.N.; Gnatchenko, S.L.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович
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Magnetic phase transitions in the NdFe3(BO3)(4) multiferroic / G. A. Zvyagina [et al.] // Low Temp. Phys. - 2011. - Vol. 37, Is. 12. - P. 1010-1020 ; Физика низких температур, DOI 10.1063/1.3674182. - Cited References: 24 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
FERROBORATE
BEHAVIOR
Аннотация: Low-temperature studies of the behavior of the sound velocity and attenuation of acoustic modes have been performed on a single crystal NdFe3(BO3)(4) Transitions of the magnetic subsystem to the antiferromagnetically ordered state at T-N approximate to 30.6 K have been revealed in the temperature behavior of the elastic characteristics. The features in the temperature behavior of elastic characteristics of the neodymium ferroborate and its behavior in the external magnetic field, applied in the basic plane of the crystal, permit us to suppose that the transition to an incommensurate spiral phase is realized in the system. This phase transition behaves as the first order one. H-T phase diagrams for the cases H parallel to a and H parallel to b have been constructed. The phenomenological theory, which explains observed features, has been developed. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3674182]

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Держатели документа:
[Zvyagina, G. A.
Zhekov, K. R.
Bilych, I. V.
Zvyagin, A. A.] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
[Zvyagin, A. A.] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[Gudim, I. A.
Temerov, V. L.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Zvyagina, G. A.; Zhekov, K. R.; Bilych, I. V.; Zvyagin, A. A.; Gudim, I. A.; Гудим, Ирина Анатольевна; Temerov, V. L.; Темеров, Владислав Леонидович

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10.

Magnetic field-induced rotation of the plane of polarization of light in the antiferromagnetic ferroborate TbFe3(BO3)(4) / V. A. Bedarev [et al.] // Low Temp. Phys. - 2011. - Vol. 37, Is. 6. - P. 476-479 ; Физика низких температур, DOI 10.1063/1.3614411. - Cited References: 11 . - ISSN 1063-777X

РУБ Physics, Applied

Кл.слова (ненормированные):
antiferromagnetic materials -- iron compounds -- light polarisation -- magnetisation -- tellurium compounds
Аннотация: The magnetic field dependences of the rotation of the plane of polarization of light and the magnetization in single crystals of the ferroborate TbFe3(BO3)(4) are studied. The main contribution to the magnetic field-induced rotation of the plane of polarization is found to be from the magnetic subsystem of the terbium ions. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3614411]

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Держатели документа:
[Bedarev, V. A.
Pashchenko, M. I.
Bludov, A. N.
Gnatchenko, S. L.] Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
[Bezmaternykh, L. N.
Temerov, V. L.] Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
B.I. Verkin Institute of Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Pr. Lenina 47, Kharkov 61103, Ukraine
L.V. Kirenskii Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Bedarev, V. A.; Pashchenko, M. I.; Bludov, A. N.; Gnatchenko, S. L.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович

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