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1.


   
    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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2.


   
    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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3.


   
    Comparing the magnetic and magnetoelectric properties of the SmFe3(BO3)4 ferroborate single crystals grown using different solvents / E. Eremin [et al.] // J. Cryst. Growth. - 2019. - Vol. 518. - P. 1-4, DOI 10.1016/j.jcrysgro.2019.04.017. - Cited References: 17. - This study was supported by the Russian Foundation for Basic Research (RFBR) according to the research projects No. 18-02-00696_a and RFBR, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund by project No. 18-42-240011 p_a. . - ISSN 0022-0248. - ISSN 1873-5002
РУБ Crystallography + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
POLARIZATION
   FEATURES

Кл.слова (ненормированные):
Impurities -- Growth from solutions -- Single crystal growth -- Borates -- Ferroelectric materials -- Magnetic materials
Аннотация: SmFe3(BO3)4 single crystals have been grown from the bismuth trimolybdate and lithium tungstate-based melt–solutions. Samarium ferroborate single crystals were grown first from the lithium–tungstate flux. The magnetic and magnetoelectric properties of the synthesized crystals have been compared. It is shown that the SmFe3(BO3)4 ferroborate grown from the bismuth trimolybdate-based melt–solution contains impurities of Bi3+ ions (∼5% at.), which replace Sm3+ ions, while the SmFe3(BO3)4, ferroborate grown from the lithium tungstate-based melt–solution contains minor or zero amounts of such impurities. The magnetoelectric and magnetodielectric effects with the Bi3+ admixture appeared 1.5× stronger than in SmFe3(BO3)4; this is probably due to twinning.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Eremin, E. V.; Еремин, Евгений Владимирович; Gudim, I. A.; Гудим, Ирина Анатольевна; Temerov, V. L.; Темеров, Владислав Леонидович; Smolyakov, D. A.; Смоляков, Дмитрий Александрович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Russian Foundation for Basic Research (RFBR) [18-02-00696_a]; RFBR, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [18-42-240011 p_a]
}
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4.


   
    Dynamics of structural and magnetic phase transitions in ferroborate YFe3(BO3)4 / K. V. Frolov [et al.] // J. Alloys Compd. - 2018. - Vol. 748. - P. 989-994, DOI 10.1016/j.jallcom.2018.03.243. - Cited References: 58. - We thank Dr. A.P. Dudka for help in the low temperature XRD measurements and Dr. D.Yu. Chernyshov for help in the synchrotron XRD measurements. This study was supported by the Federal Agency of Scientific Organizations (Agreement No 007-ГЗ/Ч3363/26 ) in parts of energy-dispersive X-ray microanalysis, high-temperature XRD, and Mossbauer measurements, by the Russian Foundation for Basic Research (project #17-02-00766а ) in parts of low-temperature XRD and Mossbauer measurements, Russian Ministry of Education and Science and performed using the equipment of the Shared Research Center of the Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” RAS. . - ISSN 0925-8388
   Перевод заглавия: Динамика структурных и магнитных фазовых переходов в ферроборате YFe3(BO3)4
Кл.слова (ненормированные):
Multiferroics -- Rare-earth compounds -- X-ray diffraction -- Mossbauer spectroscopy -- Crystal structure
Аннотация: X-ray analysis of the YFe3(BO3)4 single crystal revealed different behavior of parameters of the crystal cell with an increase in temperature from 25 to 500 K. The parameters a and b initially increase monotonically and then rise sharply in the range between 360 and 380 K, which corresponds to the structural phase transition. The parameter c initially decreases linearly upon heating and then begins to increase, passing through a minimum at 90 K. In the interval of 200–500 K the parameter c grows linearly and does not undergo anomalies at the structural phase transition. The results of Mössbauer measurements at 57Fe nuclei in the paramagnetic phase of YFe3(BO3)4 correlate well with the XRD data, but they do not separate the two structural states of iron ions Fe1 and Fe2 arising in the P3121 phase during the structural phase transition. The temperature of the magnetic phase transition TN = 39.42(16) K is established, below which the iron ions form a 3D magnetic order of the Heisenberg type. The calculated “Mössbauer” Debye temperature ΘM = 340(2) K turned out to be three times lower than the Debye temperature of the entire crystal lattice TD = 1020 K. Mössbauer data indicate a weak bonding between the helicoidal chains of iron and the rest of the crystal lattice.
Рентгеновский анализ монокристалла YFe3(bo3-серии)4 выявил различие в поведении параметров кристаллической ячейки с увеличением температуры от 25 до 500 к. Параметры a и b сначала монотонно возрастают, а затем резко поднимется в диапазон между 360 и 380 К, что соответствует структурному фазовому переходу. Параметр c сначала линейно уменьшается при нагревании, а затем начинает возрастать, проходя через минимум при 90 K. В интервале 200-500 K параметр c растет линейно и не претерпевает аномалий при структурном фазовом переходе. Результаты Мёсбауэровской спектроскопии ядер 57Fe в парамагнитной фазе в YFe3(BO3)4 коррелируют с РСА, но они не разделяют двух структурных состояний ионов железа Fe1 и Fe2, возникающие в фазе P3121 в процессе структурного перехода. Установили температуру магнитного фазового перехода TN= 39.42(16) К, в результате которого ионы железа образуют 3D магнитный порядок типа Гейзенберга. Рассчитанная по Мёссбауэру Дебаевская температура QM= 340(2) K оказалась в три раза ниже температуры Дебая внутри кристаллической решетки TD= 1020 K. Данные Мёсбауэра указывают на слабую связь между геликоидальными цепочками железной и остальных кристаллических решеток.

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Держатели документа:
Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” RAS, Moscow, Russian Federation
Kirensky Institute of Physics, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Frolov, K. V.; Lyubutin, I. S.; Alekseeva, O. A.; Smirnova, E. S.; Verin, I. A.; Temerov, V. L.; Темеров, Владислав Леонидович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Artemov, V. V.; Dmitrieva, T. V.
}
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5.


   
    Electron transport in FeBO3 ferroborate at ultrahigh pressures / I. A. Troyan [et al.] // JETP Letters. - 2012. - Vol. 94, Is. 10. - P. 748-752, DOI 10.1134/S0021364011220115. - Cited References: 22. - This work was supported by the Russian Foundation for Basic Research (project nos. 09-02-01527-a, 09-02-00127-a, 09-02-00171-a, 11-02-00291-a, and 11-02-00636-a), by the Ministry of Education and Science of the Russian Federation (state contract nos. 16.518.11.7021 and MK-5632.2010.2), and by the Division of Physical Sciences, Russian Academy of Sciences (program "Strong Electron Correlations"). . - ISSN 0021-3640
РУБ Physics, Multidisciplinary
Рубрики:
MAGNETIC COLLAPSE
   TRANSITION

   STATE

Аннотация: The electrical resistance of FeBO3 crystals at high and ultrahigh pressures (up to 198 GPa) and low temperatures has been measured using diamond anvil cells. It has found that in the high-pressure phase, 46 GPa ‹ P‹ 100 GPa, the activation energy E-ac decreases gradually from 0.55 to 0.3 eV according to a linear law. Its extrapolation to zero gives an estimated value of about 210 GPa for the pressure at which complete metallization is expected. However, above 100 GPa, the linear E-ac(P) dependence smoothly transforms to a nonlinear one. At the same time, the temperature dependence of the electrical resistance at fixed pressure significantly deviates from the Arrhenius activation law and does not obey the Mott law for the hopping conductivity. Experimental data demonstrate the dependence of the activation energy E-ac both on pressure and temperature. At T = 0, the gap tends to zero. Theoretical analysis shows that the decrease in E-ac upon cooling can be interpreted in terms of the transition of the low-spin FeBO3 phase to the magnetically ordered (anti-ferromagnetic) state.

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Публикация на русском языке Транспортные свойства ферро-бората FeBO3 при сверхвысоких давлениях [Текст] / И. А. Троян [и др.] // Письма в Журн. эксперим. и теор. физ. : Наука, 2011. - Т. 94 Вып. 10. - С. 811-815

Держатели документа:
[Troyan, I. A.
Gavrilyuk, A. G.
Lyubutin, I. S.] Russian Acad Sci, Shubnikov Inst Crystallog, Moscow 119333, Russia
[Troyan, I. A.] Max Planck Inst Chem, D-55020 Mainz, Germany
[Gavrilyuk, A. G.] Russian Acad Sci, Inst Nucl Res, Troitsk 142190, Moscow Region, Russia
[Ovchinnikov, S. G.
Kazak, N. V.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Troyan, I. A.; Gavrilyuk, A. G.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Lyubutin, I. S.; Kazak, N. V.; Казак, Наталья Валерьевна
}
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6.


    Eremin, E. V.
    Magnetic properties of Eu1-xLaxFe3(BO3)4 ferroborate / E. V. Eremin, I. A. Gudim, V. L. Temerov // Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст. I.P5. - P. 144-145. - Cited References: 7. - This study was supported by the Russian Foundation for Basic Research (RFBR) according to the research projects No. 18-02-00696_a. . - ISBN 978-5-9500855-7-4
   Перевод заглавия: Магнитные свойства ферробората Eu1-xLaxFe3(BO3)4)

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Gudim, I. A.; Гудим, Ирина Анатольевна; Temerov, V. L.; Темеров, Владислав Леонидович; Еремин, Евгений Владимирович; Российская академия наук; Уральское отделение РАН; Институт физики металлов им. М. Н. Михеева Уральского отделения РАН; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Российский фонд фундаментальных исследований; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
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}
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7.


   
    Features of magnetoelastic properties of yttrium ferroborate at low temperatures / G. A. Zvyagina [и др.] // First International Workshop Novel Trends in Physics of Ferroics. [[b]]NTPF-2014[[/b]], July 4-6, 2014, St. Petersburg, Russia : Book of abstracts. - 2014. - P59

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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; Temerov, V. L.; Темеров, Владислав Леонидович; International Workshop Novel Trends in Physics of Ferroics (1 ; July 4-6 ; St. Petersburg, Russia)
}
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8.


    Gavrichkov, V. A.
    Effect of optical f - f excitations on the Nd-Fe exchange interaction in Nd ferroborate with multiferroic properties / V. A. Gavrichkov, A. V. Malakhovskii, S. G. Ovchinnikov // Phys. Rev. B. - 2021. - Vol. 104, Is. 6. - Ст. 064445, DOI 10.1103/PhysRevB.104.064445. - Cited References: 28. - The reported study was supported by the RFBR Grant 19-02-00034. V.A.G. is also grateful to the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, and Krasnoyarsk Regional Fund of Science according to the research project "Studies of superexchange and electron-phonon interactions in correlated systems as a basis for searching for promising functional materials" No. 20-42-240016 . - ISSN 2469-9950. - ISSN 2469-9969
РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
LOCAL MAGNETIC-PROPERTIES
   SINGLE-CRYSTAL

   EXCITED-STATES

Аннотация: We considered the effect of optical pumping at the f−f transitions frequency on d−f superexchange in the rare-earth antiferromagnetic ferroborate Nd0.5Gd0.5Fe3(BO3)4 between Nd3+ ions in the excited states of the 4G5/2, 2G7/2, and Fe3+ in the ground state 6A1. In the ferroborate, d−f superexchange is directly related to the strong magnetoelectric coupling observed in the ground state of the material. We show that under optical pumping at the frequency of f−f transitions 4I9/2↔(4G5/2+2G7/2) in the Nd3+ ion, the nature of the d−f interaction changes to FM. The phenomena can be explained by the occupation of the excited Nd3+ “spin pure” states with spin 1/2, or their mixing to the optically excited states with spin 3/2 due to the spin-orbit interaction. Near optically excited ions Nd3+, magnetic frustrations change from FM ordering under the d−f AFM interaction to AFM ordering under the FM interaction in the basal hexagonal plane.

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Держатели документа:
Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Malakhovskii, A. V.; Малаховский, Александр Валентинович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Гавричков, Владимир Александрович; RFBRRussian Foundation for Basic Research (RFBR) [19-02-00034]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Krasnoyarsk Regional Fund of Science [20-42-240016]; Government of Krasnoyarsk Territory
}
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9.


    Gavrichkov, V. A.
    Nd-Fe exchange interaction in Nd ferroborate with multiferroic properties under optical pumping / V. A. Gavrichkov, A. V. Malakhovskii // International conference "Functional materials" : book of abstracts / ed. V. N. Berzhansky ; org. com. S. G. Ovchinnikov [et al.]. - Simferopol, 2021. - P. 253-254. - Библиогр.: 1 назв. - The reported study was supported by the grant RFFI 19-02-00034 and the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, and Krasnoyarsk Regional Fund of Science according to the research project ”Studies of superexchange and ICFM’2021 254 electron-phonon interactions in correlated systems as a basis for searching for promising functional materials No. 20-42-240016

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Доп.точки доступа:
Berzhansky, V. N. \ed.\; Бержанский, Владимир Наумович; Ovchinnikov, S. G. \org. com.\; Овчинников, Сергей Геннадьевич; Malakhovskii, A. V.; Малаховский, Александр Валентинович; Ovchinnikov, S. G.; Гавричков, Владимир Александрович; "Functional materials", International conference(2021 ; Oct. 4-8 ; Alushta, Russia); Крымский федеральный университет имени В.И. Вернадского
}
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10.


   
    Giant gigahertz optical activity in multiferroic ferroborate / A. M. Kuzmenko [et al.] // Phys. Rev. B. - 2014. - Vol. 89, Is. 17. - Ст. 174407, DOI 10.1103/PhysRevB.89.174407. - Cited References: 35. - This work was supported by the Russian Foundation for Basic Researches (Grants No. 12-02-01261 and No. 12-02-31461 mol) and by the Austrian Science Funds (Grants No. I815-N16 and No. W1243). . - ISSN 1098-0121. - ISSN 1550-235X
Рубрики:
RFE3(BO3)4
Аннотация: In contrast to the well-studied multiferroic manganites with a spiral structure, the electric polarization in multiferroic borates is induced within a collinear antiferromagnetic structure and can easily be switched by small static fields. Because of specific symmetry conditions, the static and dynamic properties in borates are directly connected, which leads to giant magnetoelectric and magnetodielectric effects. Here we prove experimentally that the giant magnetodielectric effect in samarium ferroborate, SmFe3(BO3)4, is of intrinsic origin and is caused by an unusually large electromagnon situated in the microwave range. This electromagnon reveals a strong optical activity exceeding 120 degrees of polarization rotation in a millimeter thick sample.
В отличие от хорошо изученных мультиферроиков манганитов со спиральной структуры, электрическая поляризация в мультиферроиков боратов индуцируется в коллинеарной антиферромагнитной структуре и может легко переключаться небольшими статическими полями. Из-за специфических условий симметрии, статические и динамические свойства боратов непосредственно связаны, что приводит к гигантским магнитоэлектрическому и магнитодиэлектрическому эффектам. Здесь мы экспериментально доказываем, что гигантский магнитодиэлектрический эффект в самариевом ферробората, SmFe3 (BO3) 4, имеет самостоятельное происхождение и вызван необычно большим электромагноном, расположеным в микроволновом диапазоне. Это электромагнон показывает сильную оптическую активность, более 120 градусов вращения поляризации в миллиметровом образце.

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Держатели документа:
Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia
Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria
RAS, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Kuzmenko, A. M.; Кузьменко А. М.; Shuvaev, A.; Dziom, V.; Pimenov, A.; Schiebl, M.; Mukhin, A. A.; Ivanov, V. Yu.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Russian Foundation for Basic Researches [12-02-01261, 12-02-31461 mol]; Austrian Science Funds [I815-N16, W1243]
}
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11.


    Gudim, I. A.
    Melt‒solution synthesis and magnetic properties of SmFe2.8Sc0.2(BO3)4 ferroborate / I. A. Gudim, E. V. Eremin, V. L. Temerov // Crystallogr. Rep. - 2020. - Vol. 65, Is. 2. - P. 307-308, DOI 10.1134/S1063774520020108. - Cited References: 7. - This study was supported by joint grant no. 18-42240011_a of the Russian Foundation for Basic Research and the Krasnoyarsk Territory Government Foundation for scientific-technical support. . - ISSN 1063-7745. - ISSN 1562-689X
РУБ Crystallography

Аннотация: Single crystals of SmFe2.8Sc0.2(BO3)(4) ferroborates are grown in melt-solutions based on bismuth trimolybdate. The magnetic properties of grown single crystals are studied. The presence of long-range magnetic order in these crystals is found.

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Публикация на русском языке Гудим, Ирина Анатольевна. Раствор-расплавный синтез и магнитные свойства ферробората SmFe2.8Sc0.2(BO3)4 [Текст] / И. А. Гудим, Е. В. Еремин, В. Л. Темеров // Кристаллография. - 2020. - Т. 65 Вып. 2. - С. 311-313

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Eremin, E. V.; Еремин, Евгений Владимирович; Temerov, V. L.; Темеров, Владислав Леонидович; Гудим, Ирина Анатольевна; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-42240011_a]; Krasnoyarsk Territory Government Foundation
}
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12.


   
    Infrared absorption spectrum of HoFe3(BO3)4 crystal / S. N. Sofronova [et al.] // Vib. Spectrosc. - 2014. - Vol. 72. - P. 20-25, DOI 10.1016/j.vibspec.2014.02.005. - Cited References: 18. - The work was partially supported by the RFBR through Grants No. 13-02-00825 and 13-02-98041, SS-4828.2012.2. . - ISSN 0924-2031. - ISSN 1873-3697
РУБ Chemistry, Analytical + Chemistry, Physical + Spectroscopy
Рубрики:
MAGNETOELASTIC INTERACTIONS
   IRON

   GDFE3(BO3)4

Кл.слова (ненормированные):
Holmium ferroborate -- Infrared absorption
Аннотация: Infrared (IR) absorption spectra of HoFe3(BO3)4 crystal have been obtained in spectral range 30–7000 cm−1 at temperatures from 4 to 423 K. Vibrational frequencies have been simulated with ‘Lady’ software package both for high-temperature and low-temperature phases. The experimental spectra have been analyzed on the basis of calculated data, and interpreted within the framework of internal vibrations of ionic complexes of HoFe3(BO3)4 crystal lattice. The spectral range under study was observed to have no Davydov splitting of internal vibrational modes due to unit cell multiplication. No effects of magnetic ordering on the IR spectra of the crystal under study were observed in the low-temperature range.

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Держатели документа:
Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Sofronova, S. N.; Софронова, Светлана Николаевна; Gerasimova, Y. V.; Герасимова, Юлия Валентиновна; Vtyurin, A. N.; Втюрин, Александр Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Shestakov, N. P.; Шестаков, Николай Петрович; Ivanenko, A. A.; Иваненко, Александр Анатольевич; RFBR [13-02-00825, 13-02-98041, SS-4828.2012.2]
}
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13.


   
    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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14.


   
    IR spectroscopy of the low-frequency phonon spectrum of the TbFe3(BO3)(4) single-crystal / V. S. Kurnosov [et al.] // Low Temp. Phys. - 2014. - Vol. 40, Is. 12. - P. 1087-1096, DOI 10.1063/1.4904002. - Cited References:27 . - ISSN 1063. - ISSN 1090-6517. -
РУБ Physics, Applied
Рубрики:
EARTH FERROBORATES RFe3(BO3)4
   RAMAN-SCATTERING

   TERBIUM FERROBORATE

Аннотация: A study of the IR reflectance spectra of the TbFe3(BO3)4 crystal. We determined the frequencies of the polar lattice phonons in the high-temperature R32, and low- temperature P3121, phases. All 8A 2 ⊕ 11E-modes were found in the high-temperature phase, with nine of them corresponding to lines of the absorption spectrum. In the low-temperature phase, of the 20A 2 ⊕ 35E-modes allowed by the symmetry of the crystal lattice, 20A 2 ⊕ 25E-modes were found.

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Публикация на русском языке ИК спектроскопия низкочастотного фононного спектра монокристалла TbFe3(BO3)4 [Текст] / В. С. Курносов [и др.] // Физ. низких температур : Физико-технический институт низких температур им. Б.И. Веркина НАН Украины, 2014. - Т. 40 Вып. 12. - С. 1397-1408

Держатели документа:
Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine.
Russian Acad Sci, Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kurnosov, V. S.; Tsapenko, V. V.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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15.


   
    Large directional optical anisotropy in multiferroic ferroborate / A. M. Kuzmenko [et al.] // Phys. Rev. B. - 2015. - Vol. 92, Is. 18. - Ст. 184409, DOI 10.1103/PhysRevB.92.184409. - Cited References: 44. - This work was supported by the Russian Foundation for Basic Research (14-02-91000, 15-02-07647, 14-02-00307, 13-02-12442, 15-42-04186), Sci. school-924.2014.2, and by the Austrian Science Fund (I815-N16, I1648-N27, W1243) . - ISSN 1098-0121
РУБ Physics, Condensed Matter
Рубрики:
DICHROISM
   BIREFRINGENCE

   RFe3(BO3)4

   POLARIZATION

   EXCITATIONS

   RESONANCE

   Cr2O3

Аннотация: One of the most fascinating and counterintuitive recent effects in multiferroics is directional anisotropy, the asymmetry of light propagation with respect to the direction of propagation. In such case the absorption in a material can be different for opposite directions. Besides absorption, different velocities of light for different directions of propagation may be also expected, which is termed directional birefringence. In this work, we demonstrate large directional anisotropy in multiferroic samarium ferroborate. The effect is observed for linear polarization of light in the range of millimeter wavelengths, and it survives down to low frequencies. The dispersion and absorption close to the electromagnon resonance can be controlled by external magnetic field and are fully suppressed in one direction. By changing the geometry of the external field, samarium ferroborate shows giant optical activity, which makes this material a universal tool for optical control: with a magnetic field as an external parameter it allows switching between two functionalities: polarization rotation and directional anisotropy.

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Держатели документа:
Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russian Federation
Institute of Solid State Physics, Vienna University of Technology, Vienna, Austria
L. V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kuzmenko, A. M.; Dziom, V.; Shuvaev, A.; Pimenov, A.; Schiebl, M.; Mukhin, A. A.; Ivanov, V. Y.; Gudim, I. A.; Гудим, Ирина Анатольевна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
Свободных экз. нет}
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16.


   
    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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17.


   
    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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18.


   
    Low-temperature magnetic phase transitions in the multiferroic Nd0.9Dy0.1Fe3(BO3)4. Part 1. Transitions induced by magnetic fields directed along the trigonal symmetry axis. Spontaneous transitions with temperature changes / G. A. Zvyagina [et al.] // Low Temp. Phys. - 2016. - Vol. 42, Is. 4. - P. 273-279, DOI 10.1063/1.4947480. - Cited References:19 . - ISSN 1063-777X. - ISSN 1090-6517
РУБ Physics, Applied
Рубрики:
Earth ferroborate Nd0.75Dy0.25Fe3(BO3)4
   Magnetoelastic properties

   NdFe3(BO3)4

Аннотация: The elastic and magnetic characteristics of single-crystal Nd0.9Dy0.1Fe3(BO3)4 are studied at low temperatures in zero magnetic field and in external fields H||C3. The temperature dependences of the acoustic mode velocities and the magnetic susceptibility manifest a transition of the magnetic subsystem into a magnetically ordered state and two successive, spontaneous spin-reorientation phase transitions. The possibility of a spontaneous transition into an incommensurate (spiral) magnetic phase in the crystal is discussed. It is shown that an external magnetic field directed along the trigonal axis of the crystal induces a sequence of spin-reorientation phase transitions. An H-Tphase diagram (H||C3) is constructed for this compound.

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Публикация на русском языке Низкотемпературные магнитные фазовые переходы в мультиферроике Nd0,9Dy0,1Fe3(BO3)4. Часть 1. Переходы, индуцированные магнитным полем, направленным вдоль оси тригональной симметрии. Спонтанные переходы при изменении температуры [Текст] / Г. А. Звягина [и др.] // Физ. низких температур : Физико-технический институт низких температур им. Б. И. Веркина НАН Украины, 2016. - Т. 42 Вып. 4. - С. 353-361

Держатели документа:
Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, Pr Nauki 47, UA-61103 Kharkov, Ukraine.
Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Zvyagina, G. A.; Zhekov, K. R.; Bilych, I. V.; Kolodyazhnaya, M. P.; Zvyagin, A. A.; Bludov, A. N.; Pashchenko, V. A.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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19.


   
    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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20.


   
    Magnetic and magnetoelectric properties of the Tb0.75Ho0.25Fe3(BO3)4 ferroborate / N. V. Volkov [et al.] // Phys. Solid State. - 2017. - Vol. 59, Is. 3. - P. 550-554, DOI 10.1134/S1063783417030325. - Cited References:16. - This study was supported by the Russian Foundation for Basic Research (project no. 15-4204186_r_sibir'_a) and the Ministry of Education and Science of the Russian Federation within the framework of the State Task for the Siberian Federal University for Implementation of Scientific Research Works in 2014 (project no. 3.2534.2014/K). . - ISSN 1063-7834. - ISSN 1090-6460
РУБ Physics, Condensed Matter

Аннотация: Single crystals of the Tb0.75Ho0.25Fe3(BO3)4 ferroborate have been grown by the group method from a solution–melt based on bismuth trimolybdate. The magnetic and magnetoelectric properties of the ferroborate single crystals have been investigated in the temperature range from 4.2 to 300 K and in magnetic fields up to 9 T. Magnetically, this material is an antiferromagnet with the Néel temperature TN = 38.8 K and easy-axis anisotropy. The magnitude of the magnetoelectric polarization has been found to be more than 1.5–2.0 times greater than the sum of the polarizations induced by the magnetic field for the ferroborates TbFe3(BO3)4 and HoFe3(BO3)4 taken in the corresponding shares.

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Публикация на русском языке Магнитные и магнитоэлектрические свойства ферробората Tb0.75Ho0.25Fe3(BO3)4 [Текст] / Н. В. Волков [и др.] // Физ. тверд. тела : Наука, 2017. - Т. 59 Вып. 3. - С. 534–537

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Pr Svobodnyi 79, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, I. A.; Гудим, Ирина Анатольевна; Russian Foundation for Basic Research [15-4204186_r_sibir'_a]; Ministry of Education and Science of the Russian Federation within the framework of the State Task for the Siberian Federal University for Implementation of Scientific Research [3.2534.2014/K]
}
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