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1.
Crystal-field and exchange-interaction
parameters formultiferroic ErFe3(BO3)4 / D. A. Erofeev [et al.]> //
Moscow International Symposium on Magnetism (MISM-2017) : 1-7 July 2017 : book of abstracts. - 2017. - Ст. 4OR-F-2. - P. 657
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Доп.точки доступа:
Erofeev, D. A.;
Chukalina
, E. P.; Yablunovsky, A.; Popova, M. N.; Попова, Марина Николаевна; Malkin, B. Z.; Gudim, I. A.; Гудим, Ирина Анатольевна; Moscow International Symposium on Magnetism(7 ; 2017 ; Jul. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
Нет сведений об экземплярах (Источник в БД не найден)
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2.
Magnetic structure of
ErFe3(BO3)4: Spectroscopic and thermodynamic studies / E. A. Popova, E. P.
Chukalina
, K. N. Boldyrev [et al.]> // J. Magn. Magn. Mater. - 2020. -
Vol. 500
. - Ст. 166374,
DOI
10.1016/j.jmmm.2019.166374. - Cited References: 14. - E.P.Ch., and K.N.B. acknowledge a financial support of the Russian Science Foundation under Grant # 19-12-00413. The calculational part of the article was prepared by . E.A.P. within the framework of the Academic Fund Program at the National Research University Higher School of Economics (HSE University) in 2019 (grant №19-04-030) and by the Russian Academic Excellence Project «5-100» . - ISSN 0304-8853
Кл.слова (ненормированные):
Erbium iron borate
--
High-resolution optical spectroscopy
--
Modeling of magnetic properties
Аннотация:
We report on the high-resolution spectroscopic study of multiferroic ErFe3(BO3)4. The energies of all eight Kramers doublets of the ground 4I15/2 multiplet of the Er3+ ion were determined by the high-resolution 4I13/2 → 4I15/2 infrared luminescence spectra. The spectroscopically determined temperature dependence of the splitting of the ground Kramers doublet was used to calculate the contribution of the erbium subsystem into the specific heat and the magnetic susceptibility of erbium iron borate. The analysis of the thermodynamic properties based on these calculations allowed us to suggest the domain structure in the easy-plane antiferromagnetically ordered iron subsystem, with two magnetically nonequivalent erbium positions in each domain.
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Держатели документа:
National Research University Higher School of Economics, Moscow, 101000, Russian Federation
Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, 108840, Russian Federation
Moscow Institute of Physics and Technology (National Research University), Dolgoprudnyi, 141701, Russian Federation
Kirenskiy Institute of Physics, Siberian Branch of RAS, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Popova, E. A.;
Chukalina
, E. P.; Boldyrev, K. N.; Jablunovskis, A.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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3.
Spectroscopy of f-f
transitions, crystal-field calculations, and magnetic and quadrupole helix chirality in DyFe3(BO3)4 / M. N. Popova [et al.]> // Phys. Rev. B. - 2017. -
Vol. 95
,
Is. 12
. - Ст. 125131,
DOI
10.1103/PhysRevB.95.125131. - Cited References: 49. - This paper was supported by the Russian Scientific Foundation (Grant No. 14-12-01033). I.A.G. thanks L. N. Bezmaternykh for useful comments concerning the crystal growth and the Russian Foundation for Basic Research for financial support under Grant No. 14-02-00307a. . - ISSN 1098-0121
Аннотация:
We present the results of temperature- and polarization-dependent high-resolution optical spectroscopy studies of DyFe3(BO3)4 performed in spectral ranges 40-300cm-1 and 3000-23000cm-1. The crystal-field (CF) parameters for the Dy3+ ions in the P3121 (P3221) phase of DyFe3(BO3)4 are obtained from calculations based on the analysis of the measured f-f transitions. Recently, quadrupole helix chirality and its domain structure was observed in resonant x-ray diffraction experiments on DyFe3(BO3)4 using circularly polarized x rays [T. Usui, Y. Tanaka, H. Nakajima, M. Taguchi, A. Chainani, M. Oura, S. Shin, N. Katayama, H. Sawa, Y. Wakabayashi, and T. Kimura, Nat. Mater. 13, 611 (2014)10.1038/nmat3942]. Using the obtained set of the CF parameters, we calculate temperature dependencies of the electronic quadrupole moments of the Dy3+ ions induced by the low-symmetry (C2) CF component and show that the quadrupole helix chirality can be explained quantitatively. We also consider the temperature dependencies of the bulk magnetic dc-susceptibility and the helix chirality of the single-site magnetic susceptibility tensors of the Dy3+ ions in the paramagnetic P3121 (P3221) phase and suggest the neutron and resonant x-ray diffraction experiments in a magnetic field to reveal the helix chirality of field-induced magnetic moments. © 2017 American Physical Society.
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Доп.точки доступа:
Popova, M. N.;
Chukalina
, E. P.; Boldyrev, K. N.; Stanislavchuk, T. N.; Malkin, B. Z.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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4.
Holmium iron borate:
high-resolution spectroscopy and crystal-field parameters / D. A. Erofeev [et al.] ; ed. E. A. Vinogradov [et al.]> //
XXV Congress on Spectroscopy. - 2017. -
Vol. 132
. - Ст. 03013. - (EPJ Web of Conferences),
DOI
10.1051/epjconf/201713203013. - Cited References:4 . - ISSN 2100-014X
Перевод заглавия:
Гольмиевый ферроборат: спектроскопия высокого разрешения и параметры кристаллического поля
РУБ
Spectroscopy
Аннотация:
High-resolution transmission spectra of HoFe3(BO3)(4) single crystals were measured in broad spectral (5000-23000 cm(-1)) and temperature (1.7-300 K) ranges. Crystal-field energies of the Ho3+ ions were determined for a paramagnetic and easy-axis antiferromagnetic phases of the compound. On the basis of these data and of preliminary crystal-field calculations in the frame of the exchange-charge model, crystal-field parameters were found. A parameter of the isotropic Ho-Fe exchange interaction was estimated.
Спектры пропускания высокого разрешения монокристаллов HoFe3(BO3)4 измерялись в широком спектральном диапазоне (5000-23000 см-1) при температурах от 1,7 до 300 К. Определены энергии кристаллического поля ионов Ho3+ для парамагнитной и легкоосной антиферромагнитных фаз соединения. На основе этих данных и предварительных расчетов кристаллического поля в рамках модели обменного заряда были найдены параметры кристаллического поля. Оценен параметр изотропного обменного взаимодействия Ho-Fe.
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Доп.точки доступа:
Erofeev, D. A.;
Chukalina
, E. P.; Popova, M. N.; Попова, Марина Николаевна; Malkin, B. Z.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Vinogradov, E.A. \ed.\; Naumov, A.V. \ed.\; Gladush, M.G. \ed.\; Karimullin, K.R. \ed.\; Congress on Spectroscopy(25 ; 2016 ; Oct ; 03-07 ; Troitsk)
}
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5.
Spectroscopy of f-f
transitions, crystal-field calculations, and magnetic and quadrupole helix chirality in DyFe3(BO3)4 / M. N. Popova [et al.]. - Electronic text data> // ArXiv. - 2016. - Ст. 1611.07092. - Cited References: 47. - This work was supported by the Russian Science Foundation (Grant No14-12-01033). I. A. G. thanks L. N. Bezmaternykh for useful comments concerning the crystal growth and the Russian Foundation for Basic Research for a financial support under Grant No 14-02-00307a.
Аннотация:
Recently, quadrupole helix chirality and its domain structure was observed in resonant x-ray diffraction experiments on DyFe3(BO3)4 using circularly polarized x rays [T. Usui et al., Nature Materials 13, 611 (2014)]. We show that this effect can be explained quantitatively by calculating the quadrupole moments of the Dy3+ ions induced by the low-symmetry (C2) crystal-field (CF) component. In this work, the CF parameters for the Dy3+ ions in the P3121 (P3221) phase of DyFe3(BO3)4 are obtained from CF calculations based on the analysis of high-resolution temperature-dependent optical spectroscopy data. We also consider the helix chirality of the single-site magnetic susceptibility tensors of the Dy3+ ions in the paramagnetic P3121 (P3221) phase and suggest a neutron diffraction experiment to reveal it.
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Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, 108840 Moscow, Troitsk, Russia
Department of Physics, New Jersey Institute of Technology, 07102 Newark, New Jersey, USA
Kazan Federal University, 420008 Kazan, Russia
Kirensky Institute of Physics, Siberian Branch of RAS, 660036 Krasnoyarsk, Russia
Доп.точки доступа:
Popova, M. N.;
Chukalina
, E. P.; Boldyrev, K. N.; Stanislavchuk, T. N.; Malkin, B. Z.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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6.
Chukalina
, E. P.
Study of the magnetic properties of neodymium and samarium iron borates by the method of erbium spectroscopic probe / E. P.
Chukalina
, A. Jablunovskis, I. A. Gudim> // Opt. Spectrosc. - 2022. -
Vol. 130
,
Is. 1
. - P. 98-104,
DOI
10.21883/EOS.2022.01.52993.23-21. - Cited References: 30. - This paper was carried out under financial support of the Russian Science Foundation (grant № 19-12-00413) . - ISSN 0030-400X. - ISSN 1562-6911
Кл.слова (ненормированные):
multiferroics
--
optical spectroscopy
--
crystals with rare earths
--
Kramers ions
Аннотация:
Iron borates NdFe3(BO3)4 and SmFe3(BO3)4 activated with 1% erbium, with a huntite structure (space symmetry group R32) were investigated by the method of erbium spectroscopic probe. From an analysis of the temperature dependence of the transmission spectra in the region of the 4I15/2 → 4I13/2 transition in the Er3+ ion, it was found that both studied compounds order antiferromagnetically at TN ≈ 33 K into an easy-plane magnetic structure. No other phase transitions were found.
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Публикация на русском языке
Чукалина Е. П. Исследование магнитных свойств ферроборатов неодима и самария методом спектроскопического эрбиевого зонда [Текст] / Е. П. Чукалина, А. Яблуновский, И. А. Гудим // Опт. и спектроскоп. - 2022. - Т. 130 Вып. 1. - С. 104-110
Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, Russia
Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
Доп.точки доступа:
Jablunovskis, A.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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7.
Chukalina
, E. P.
Study of the magnetic properties of neodymium and samarium iron borates by the method of erbium spectroscopic probe / E. P.
Chukalina
, A. Jablunovskis, I. A. Gudim> // Opt. Spectrosc. - 2023. -
Vol. 131
,
Is. 8
. - P. 630-636,
DOI
10.1134/S0030400X23060024. - Cited References: 30. - This paper was carried out under financial support of the Russian Science Foundation (grant № 19-12-00413) . - ISSN 0030-400X. - ISSN 1562-6911
Кл.слова (ненормированные):
multiferroics
--
optical spectroscopy
--
crystals with rare earths
--
Kramers ions
Аннотация:
Iron borates NdFe3(BO3)4 and SmFe3 (BO3)4 activated with 1% erbium, with ahuntite structure (space symmetry group R32) were investigated by the method of erbium spectroscopic probe. From an analysis of the temperature dependence of the transmission spectra in the region of the 4I15/2 → 4113/2 transition in the Er3+ ion, it was found that both studied compounds order antiferromagnetically at TN ≈ 33 K into an easy-plane magnetic structure. No other phase transitions were found.
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Публикация на русском языке
Чукалина Е. П. Исследование магнитных свойств ферроборатов неодима и самария методом спектроскопического эрбиевого зонда [Текст] / Е. П. Чукалина, А. Яблуновский, И. А. Гудим // Опт. и спектроскоп. - 2022. - Т. 130 Вып. 1. - С. 104-110
Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, 108840, Troitsk, Moscow, Russia
Moscow Institute of Physics and Technology (National Research University), 141701, Dolgoprudny, Moscow oblast, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Jablunovskis, A.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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8.
Spectroscopic Study of
the Mag netic Ordering in SmFe3(BO3)4 [Text] /
Chukalina
E.P.Popova M.N. [et al.]> // Physics Letters A. - 2010. -
Vol. 374
. - P1790-1792
Доп.точки доступа:
Chukalina
, E.P.; Popova, M.N.; Bezmaternykh, L.N.; Gudim, I.A.
}
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9.
High-resolution optical spectroscopy
and modeling of spectral and magnetic properties of multiferroic ErFe3(BO3)4 / M. N. Popova, E. P.
Chukalina
, D. S. Erofeev [et al.]> // Phys. Rev. B. - 2020. -
Vol. 101
,
Is. 20
. - Ст. 205108,
DOI
10.1103/PhysRevB.101.205108. - Cited References: 38. - Financial support of the Russian Science Foundation under Grant No. 19-12-00413 is acknowledged. . - ISSN 2469-9950. - ISSN 2469-9969
РУБ
Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
F-F TRANSITIONS
ENERGY-LEVELS
ER3+ IONS
GROWTH
Аннотация:
We carried out the high-resolution broadband temperature-dependent polarized optical spectroscopy and theoretical studies of ErFe3(BO3)4 single crystals in the paramagnetic and antiferromagnetic (T˂TN=39K) phases. On the basis of the experimentally determined 45 crystal-field (CF) levels of Er3+ ions at sites with the C2 point symmetry, CF calculations were performed, a set of physically grounded CF parameters was obtained and used to model the temperature dependences of the Er magnetic moments measured in neutron-scattering experiments, as well as the magnetic susceptibility and magnetization of the compound; the contributions of the quasi-one-dimensional iron magnetic subsystem were calculated in the frame of the previously developed self-consistent four-particle cluster model. The modeling strongly supports an easy-plane collinear structure of iron magnetic moments and excludes earlier proposed additional magnetic phase.
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Держатели документа:
Russian Acad Sci, Inst Spect, Moscow 108840, Russia.
Natl Res Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141701, Moscow Region, Russia.
LV Kirenskii Inst Phys, Siberian Branch RAS, Krasnoyarsk 660036, Russia.
Kazan Fed Univ, Kazan 420008, Russia.
Доп.точки доступа:
Popova, M. N.;
Chukalina
, E. P.; Erofeev, D. S.; Jablunovskis, A.; Gudim, I. A.; Гудим, Ирина Анатольевна; Malkin, B. Z.; Russian Science FoundationRussian Science Foundation (RSF) [19-12-00413]
}
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10.
High-resolution optical spectroscopy,
magnetic properties, and single-crystal neutron diffraction of multiferroic HoFe3(BO3)4: Magnetic structure / M. N. Popova, E. P.
Chukalina
, D. A. Erofeev [et al.]> // Phys. Rev. B. - 2021. -
Vol. 103
,
Is. 9
. - Ст. 094411,
DOI
10.1103/PhysRevB.103.094411. - Cited References: 65. - Financial support of the Russian Science Foundation under Grant No. 19-12-00413 is acknowledged. I.V.G. acknowledges financial support of the neutron scattering studies from the Russian Foundation for Basic Research under Grant No. 20-02-00109. The analysis of the measured neutron diffraction data was performed by A.A.M. with support of the Russian Science Foundation under Grant No. 16-12-10531 . - ISSN 2469-9950
Кл.слова (ненормированные):
Antiferromagnetic structures
--
Elastic neutron scattering
--
High-resolution spectroscopy
--
Magnetic susceptibility tensors
--
Magnetoelectric properties
--
Neutron diffraction measurements
--
Single-crystal neutron diffraction
--
Temperature dependencies
Аннотация:
The magnetic structure is usually determined by the neutron diffraction measurements. However, in the case of complex multisublattice magnetics, this method fails to give an unambiguous result. Here, on the example of multiferroic HoFe3(BO3)4, we show that in the case of rare-earth (RE) compounds the right magnetic structure can be determined by additionally using optical spectroscopy and a theoretical analysis based on spectroscopic data. HoFe3(BO3)4 demonstrates a series of phase transitions and interesting magnetic and magnetoelectric properties. The available information on the magnetic structure of the compound, necessary for understanding and utilizing these properties, is contradictory. To resolve the existing ambiguities, we apply a combined approach. The high-resolution spectroscopy data deliver a set of the Ho3+ crystal-field (CF) levels in the paramagnetic and both easy-plane and easy-axis magnetic phases. These data are used to determine CF and Ho3+-Fe3+ exchange parameters and, then, to calculate the temperature dependencies of the magnetic susceptibility tensor of HoFe3(BO3)4. Based on these calculations, we suggest an easy-plane antiferromagnetic structure with a collinear arrangement of the Fe spins along the a axis and induced noncolinear moments of magnetically nonequivalent Ho ions. The suggested structure is further confirmed by single-crystal elastic neutron scattering experiments. We argue that specific features of the magnetic properties of RE iron borates isostructural to HoFe3(BO3)4 are governed by the energy patterns and the symmetry properties of the wave functions of the lower CF levels of the RE ground multiplet in the crystal field of the C2 symmetry.
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Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, Moscow, Troitsk, 108840, Russian Federation
L. V. Kirensky Institute of Physics, Siberian Branch of Ras, Krasnoyarsk, 660036, Russian Federation
National Research Center "kurchatov Institute", B.P. Konstantinov Petersburg Nuclear Physics Institute, Gatchina, 188300, Russian Federation
Laboratoire Leon Brillouin, CEA-CNRS, CE-Saclay, Gif-sur-Yvette, 91191, France
Prokhorov General Physics Institute, Ras, Moscow, 119991, Russian Federation
Kazan Federal University, Kazan, 420008, Russian Federation
Доп.точки доступа:
Popova, M. N.;
Chukalina
, E. P.; Erofeev, D. A.; Gudim, I. A.; Гудим, Ирина Анатольевна; Golosovsky, I. V.; Gukasov, A.; Mukhin, A. A.; Malkin, B. Z.
}
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11.
Spectroscopic study of
the magnetic ordering in SmFe3(BO3)(4) / E. P.
Chukalina
[et al.]> // Phys. Lett. A. - 2010. -
Vol. 374
,
Is. 15-16
. - P. 1790-1792,
DOI
10.1016/j.physleta.2010.02.018. - Cited References: 20. - The authors thank B.Z. Malkin and S.A. Klinnin for helpful discussions and K.N. Boldyrev for participating in some low-temperatures measurements. This work was supported in part by the Russian Foundation for Basic Research (grants Nos. 10-02-01071 and 10-02-00765), and by the Russian Academy of Sciences under the Programs for Basic Research. . - ISSN 0375-9601
РУБ
Physics, Multidisciplinary
Рубрики:
IRON BORATE GDFE3(BO3)(4)
SINGLE-CRYSTAL
DYFE3(BO3)(4)
Кл.слова (ненормированные):
Rare-earth iron borates
--
Magnetic ordering
--
Optical spectroscopy
--
Magnetic ordering
--
Optical spectroscopy
--
Rare-earth iron borates
Аннотация:
SmFe3(BO3)(4) belongs to the family of rare-earth RFe3(BO3)(4) multiferroics. We present the first measurements of the optical spectra of SmFe3(BO3)(4) (on single crystals) and report the data on the crystal-field levels and their symmetries for the ground multiplet H-6(5/2) [0 (Gamma(4)). 135 (Gamma(56)), and 220 (Gamma(4)) cm(-1)] and on the ground-state exchange splitting (13.2 cm(-1) at 1.7 K), important to interpret the magnetic, magnetoelectric, and thermodynamic properties of this compound. The observed exchange splitting of the Sm3+ Kramers doublets manifests the magnetic ordering in SmFe3(BO3)(4) at 32 +/- 1 K. From a comparison of the temperature-dependent spectra of the Sm3+ ion in SmFe3(BO3)(4) and in Nd-Gd mixed iron borate where the magnetic spin reorientation has been found earlier, we suggest the easy-plane arrangement of the Fe spins in SmFe3(BO3)(4). The samarium iron borate preserves the R32 (D-3(7)) crystal structure at all the investigated temperatures (down to 1.7 K). (C) 2010 Elsevier B.V. All rights reserved.
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Держатели документа:
[
Chukalina
, E. P.
Popova, M. N.] RAS, Inst Spect, Troitsk 142190, Moscow Region, Russia
[Bezmaternykh, L. N.
Gudim, I. A.] RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, RAS, 5, Fizicheskaya str, 142190 Troitsk, Moscow region, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch, RAS, 660036 Krasnoyarsk, Russian Federation
Доп.точки доступа:
Chukalina
, E. P.; Popova, M. N.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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12.
Investigation of the
iron borates DyFe3(BO3)(4) and HoFe3(BO3)(4) by the method of Er3+ spectroscopic probe / T. N. Stanislavchuk [et al.]> // Phys. Lett. A. - 2007. -
Vol. 368
,
Is. 5
. - P. 408-411,
DOI
10.1016/j.physleta.2007.04.044. - Cited References: 16 . - ISSN 0375-9601
РУБ
Physics, Multidisciplinary
Рубрики:
GDFE3(BO3)(4)
CRYSTALS
Кл.слова (ненормированные):
rare-earth iron borates
--
magnetic ordering
--
optical spectroscopy
--
Magnetic ordering
--
Optical spectroscopy
--
Rare-earth iron borates
Аннотация:
Temperature-dependent high-resolution optical spectra of the Er3+ probe ion in DyFe3(BO3)(4) and HoFe3(BO3)(4) are reported. The data provide the temperature of magnetic ordering and direction of the Fe3+ magnetic moments. Both compounds order magnetically at T-N = 39 +/- 1K. The magnetic structure of DyFe3(BO3)(4) is of the easy-axis type, while that of HoFe3(BO3)(4) is of the easy-plane type. The role of anisotropic interactions between the iron and the rare-earth subsystems is discussed. (c) 2007 Elsevier B.V. All rights reserved.
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Держатели документа:
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
LV Kirenskii Inst Phys, RAS, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Moscow region, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch, RAS, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Stanislavchuk, T. N.;
Chukalina
, E. P.; Popova, M. N.; Bezmaternykh, L. N.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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13.
High-resolution spectroscopy of
HoFe3(BO3)4 crystal: a study of phase transitions / D. A. Erofeev [et al.]> // Opt. Spectrosc. - 2016. -
Vol. 120
,
Is. 4
. - P. 558-565,
DOI
10.1134/S0030400X16040056. - Cited References:30. - This work was supported by the Russian Scientific Foundation, grant no. 14-12-01033. . - ISSN 0030-400X. - ISSN 1562-6911
РУБ
Optics + Spectroscopy
Рубрики:
Magnetoelastic interactions
GdFE3(BO3)4
Аннотация:
The transmission spectra of HoFe3(BO3) multiferroic single crystals are studied by optical Fourier-transform spectroscopy at temperatures of 1.7–423 K in polarized light in the spectral range 500–10 000 cm–1 with a resolution up to 0.1 cm–1. A new first-order structural phase transition close to the second-order transition is recorded at Tc = 360 K by the appearance of a new phonon mode at 976 cm–1. The reasons for considerable differences in Tc for different samples of holmium ferroborate are discussed. By temperature variations in the spectra of the f–f transitions in the Ho3+ ion, we studied two magnetic phase transitions, namely, magnetic ordering into an easy-plane structure as a second-order phase transition at TN = 39 K and spin reorientation from the ab plane to the c axis as a first-order phase transition at TSR = 4.7 ± 0.2 K. It is shown that erbium impurity in a concentration of 1 at % decreases the spin-reorientation transition temperature to TSR = 4.0 K.
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Спектроскопия высокого разрешения кристалла HoFe3(BO3)4: исследование фазовых переходов [Текст] / Д. А. Ерофеев [и др.] // Оптика и спектроскопия : Наука, 2016. - Т. 120 № 4. - С. 588-595
Держатели документа:
Russian Acad Sci, Inst Spect, Moscow 108840, Russia.
State Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Oblast, Russia.
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Erofeev, D. A.;
Chukalina
, E. P.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Popova, M. N.; Russian Scientific Foundation [14-12-01033]
}
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14.
Crystal field and
exchange interactions in the SmFe3(BO3)4 multiferroic / M. N. Popova [et al.]> // J. Exp. Theor. Phys. - 2014. -
Vol. 118
,
Is. 1
. - P. 111-123,
DOI
10.1134/S1063776114010142. - Cited References: 22. - This work was supported by the Russian Foundation for Basic Research (project no. 13-02-00787) and the basic research program Quantum Mesoscopic and Disordered Structures of the Presidium of the Russian Academy of Sciences. . - ISSN 1063-7761. - ISSN 1090-6509
РУБ
Physics, Multidisciplinary
Аннотация:
The optical spectra of oriented SmFe3(BO3)4 single crystals are studied in the region of the f-f transitions in the Sm3+ ion by Fourier spectroscopy. The energies, the symmetry properties, and the exchange splittings of the Stark sublevels of the ground and 17 excited multiplets of the Sm3+ ion in a crystal field of symmetry D 3 are determined from the measured temperature dependences of polarized-radiation absorption spectra. The parameters of the crystal field acting on samarium ions and the parameters of the exchange interaction between Sm3+ and Fe3+ ions are found. The anisotropy of the effective exchange interaction is shown to be substantially stronger than the magnetic anisotropy, due to a strong crystal-field-induced mixing of the ground and excited multiplets.
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Исследование кристаллического поля и обменных взаимодействий в мультиферроике SmFe3( BO3)4 [Текст] / М. Н. Попова [и др.] // Журн. эксперим. и теор. физ. : Наука, 2014. - Т. 145 Вып. 1. - С. 128-142
Держатели документа:
Russian Acad Sci, Inst Spect, Moscow 142190, Russia
Kazan Privolzhsky Fed Univ, Kazan 420008, Russia
State Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Oblast, Russia
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Popova, M. N.;
Chukalina
, E. P.; Malkin, B. Z.; Erofeev, D. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Russian Foundation for Basic Research [13-02-00787]; basic research program Quantum Mesoscopic and Disordered Structures of the Presidium of the Russian Academy of Sciences
}
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15.
Improving one’s understanding
of magnetic properties of SmFe3(BO3)4 by means of spectroscopic data [Текст] / E. P.
Chukalina
[et al.]> //
Moscow int. Symp. on Magnet. (MISM-2014) : Book of abstracts. - 2014. - Ст. 30PO-M-22. - P. 279 . - ISBN 978-5-91978-025-0
Материалы конференции
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Доп.точки доступа:
Chukalina
, E. P.; Malkin, B. Z.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Popova, M. N.; Moscow International Symposium on Magnetism(6 ; 2014 ; 29 June-3 July ; Moscow); Московский государственный университет им. М.В. Ломоносова
}
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16.
Cascade of phase
transitions in GdFe3(BO3)(4) / R. Z. Levitin [et al.]> // JETP Letters. - 2004. -
Vol. 79
,
Is. 9
. - P. 423-426,
DOI
10.1134/1.1776236. - Cited References: 8 . - ISSN 0021-3640
РУБ
Physics, Multidisciplinary
Рубрики:
CRYSTALS
ND
Аннотация:
Cascade of phase transitions in GdFe3(BO3)(4) at 156, 37, and 9 K has been detected by specific heat measurements and further studied by Raman scattering and Nd3+ spectroscopic probe method. A weakly first-order structural phase transition at 156 K is followed by a second-order antiferromagnetic ordering phase transition at 37 K and a first-order spin-reorientational phase transition at 9 K. (C) 2004 MAIK "Nauka / Interperiodica".
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Держатели документа:
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Levitin, R. Z.; Popova, E. A.; Chtsherbov, R. M.; Vasiliev, A. N.; Popova, M. N.;
Chukalina
, E. P.; Klimin, S. A.; van Loosdrecht, PHM; Fausti, D.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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17.
High-resolution spectroscopy, crystal-field
calculations, and quadrupole helix chirality of DyFe3(BO3)(4) / M. N. Popova [et al.] ; ed. E. A. Vinogradov [et al.]> //
XXV Congress on Spectroscopy. - 2017. -
Vol. 132
. - Ст. 03041. - (EPJ Web of Conferences),
DOI
10.1051/epjconf/201713203041. - Cited References:2 . - ISSN 2100-014X
РУБ
Spectroscopy
Аннотация:
High-resolution polarized transmission spectra of DyFe3(BO3)(4) single crystals were investigated in broad spectral (10-23000 cm(-1)) and temperature (3.5-300 K) ranges. Energies of the dysprosium levels in the paramagnetic and antiferromagnetic phases were determined. On the basis of these data and preliminary calculations in the frameworks of the exchange-charge model, we determined the crystal-field and Dy-Fe exchange interaction parameters of the Dy3+ ions at sites with the point C-2 symmetry corresponding to the enantiomorphic P3(1)21 and P3(2)21 space groups. The values of electronic quadrupole moments of the Dy3+ ions were calculated, which enabled us to interpret results of the work [Usui et al., Nature Mater. 13, 611 (2014)] on the observation of domains of different quadrupole chirality in DyFe3(BO3)(4).
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Доп.точки доступа:
Popova, M. N.; Попова, Марина Николаевна; Malkin, B. Z.; Stanislavchuk, T. N.;
Chukalina
, E. P.; Boldyrev, K. N.; Болдырев, Кирилл Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Vinogradov, E.A. \ed.\; Naumov, A.V. \ed.\; Gladush, M.G. \ed.\; Karimullin, K.R. \ed.\; Congress on Spectroscopy(25 ; 2016 ; Oct ; 03-07 ; Troitsk)
}
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18.
Magnetic ordering of
NdFe3(BO3)(4) studied by infrared absorption spectroscopy / E. P.
Chukalina
[et al.]> // Phys. Lett. A. - 2004. -
Vol. 322
,
Is. 3-4
. - P. 239-243,
DOI
10.1016/j.physleta.2003.12.062. - Cited References: 8 . - ISSN 0375-9601
РУБ
Physics, Multidisciplinary
Рубрики:
CRYSTALS
Кл.слова (ненормированные):
ferroborates
--
Fourier-transform spectroscopy
--
magnetic ordering
--
Ferroborates
--
Fourier-transform spectroscopy
--
Magnetic ordering
--
iron
--
neodymium
--
absorption spectroscopy
--
article
--
electronics
--
infrared spectroscopy
--
magnetism
--
molecular interaction
--
molecular physics
--
temperature
Аннотация:
We report the first measurements of the optical spectra of NdFe3(BO3)(4), a promising material for optoelectronics. Exchange splitting of Nd3+ spectral lines due to magnetic interactions in a magnetically ordered state was observed. The temperature dependences of the exchange splitting and of the linewidth point to the temperature T-c 33 +/- 1K of the magnetic ordering in both iron and neodymium. magnetic subsystems. 2004 Elsevier B.V. All rights reserved.
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Держатели документа:
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Moscow Region, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Chukalina
, E. P.; Kuritsin, D. Y.; Popova, M. N.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Kharlamova, S. A.; Temerov, V. L.; Темеров, Владислав Леонидович
}
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19.
Optical spectra, crystal-field
parameters, and magnetic susceptibility of multiferroic NdFe3(BO3)(4) / M. N. Popova [et al.]> // Phys. Rev. B. - 2007. -
Vol. 75
,
Is. 22
. - Ст. 224435,
DOI
10.1103/PhysRevB.75.224435. - Cited References: 22 . - ISSN 1098-0121
РУБ
Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)(4)
CRYSTALLIZATION
SPECTROSCOPY
LASER
ND3+
Аннотация:
We report high-resolution optical absorption spectra for NdFe3(BO3)(4) trigonal single crystal, which is known to exhibit a giant magnetoelectric effect below the temperature of magnetic ordering T-N=33 K. The analysis of the temperature-dependent polarized spectra reveals the energies and, in some cases, symmetries and exchange splittings of Nd3+ 84 Kramers doublets. We perform crystal-field calculations starting from the exchange-charge model, obtain a set of six real crystal-field parameters, and calculate wave functions and magnetic g factors. In particular, the values g(perpendicular to)=2.385 and g(parallel to)=1.376 were found for the Nd3+ ground-state doublet. We obtain B-loc=7.88 T and parallel to J(FN)parallel to=0.48 K for the values of the local effective magnetic field at liquid-helium temperatures at the Nd3+ site and the Nd-Fe exchange integral, respectively, using the experimentally measured Nd3+ ground-state splitting of 8.8 cm(-1). To check the reliability of our set of crystal-field parameters, we model the magnetic susceptibility data from literature. A dimer containing two nearest-neighbor iron ions in the spiral chain is considered to partly account for quasi-one-dimensional properties of iron borates, and then the mean-field approximation is used. The results of calculations with the exchange parameters for Fe3+ ions J(nn)=-6.25 K (intrachain interactions) and J(nnn)=-1.92 K (interchain interactions) obtained from fitting agree well with the experimental data.
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Держатели документа:
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
Kazan VI Lenin State Univ, Kazan 420008, Russia
Ecole Natl Super Chim Paris, CNRS, UMR7574, Lab Chim Appl & Etat Solide, F-75231 Paris, France
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia
RAS, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Russian Federation
Kazan State University, 420008 Kazan, Russian Federation
Laboratoire de Chimie Applique'e de l'E Tat Solide, CNRS-UMR7574, ENSCP, 11, Rue Pierre et Marie Curie, F-75231 Paris Cedex 05, France
Physics Faculty, Moscow State University, 119992 Moscow, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Popova, M. N.;
Chukalina
, E. P.; Stanislavchuk, T. N.; Malkin, B. Z.; Zakirov, A. R.; Antic-Fidancev, E.; Popova, E. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович
}
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20.
Chukalina
, E. P.
Spectroscopic study of magnetic phase transitions in NdxGd1-xFe3(BO3)(4) / E. P.
Chukalina
, L. N. Bezmaternykh> // Phys. Solid State. - 2005. -
Vol. 47
: 12th Feofilov Workshop on Spectroscopy of Crystal Activated by Rare-Earth and Transition-Metal Ions (SEP 22-25, 2004, Yekaterinburg, RUSSIA),
Is. 8
. - P. 1528-1531,
DOI
10.1134/1.2014507. - Cited References: 10 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
CRYSTALS
ND
Аннотация:
Magnetic ordering and spin reorientation in iron borates NdxGd1 - xFe3(BO3)(4) (x = 0.01, 0.04, 0.25, 1.0) are studied using a rare-earth spectroscopic probe. (c) 2005 Pleiades Publishing, Inc.
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Держатели документа:
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Oblast, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russian Federation
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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