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Optical linear dichroism in the ab-plane of NdFe3(BO3)4 ferroborate / K. N. Boldyrev, M. Diab, I. A. Gudim, M. N. Popova // J. Exp. Theor. Phys. - 2023. - Vol. 137, Is. 4 : Special Issue dedicated to the 95th Anniversary of L. A. Prozorova. - P. 486-491, DOI 10.1134/S1063776123100011. - Cited References: 16. - This study was supported by the Ministry of Science and Higher Education (project no. FFUU-2022-0003) and partially (K.N. B., dichroism measurements) by the Russian Science Foundation (grant no. 19-72-10132P) . - ISSN 1063-7761. - ISSN 1090-6509
Аннотация: The high-resolution optical absorption spectra of NdFe3(BO3)4 single crystals have been recorded at temperatures from 4 to 40 K in the IR range of f–f transitions in a Nd3+ ion. Light linearly polarized at different angles to the C2 axes in the basal plane has been passed along the trigonal C3 axis. Below the temperature of magnetic moment ordering into a collinear antiferromagnetic structure (TN ≈ 30 K), dichroism, that is, the absorption versus polarization dependence, arises. The temperature and angular dependences of dichroism indicate that the magnetic moments of iron are directed along the C2 axes up to about 17 K, the number of domains with variously directed C2 axes being different. The mechanism of linear dichroism has been discussed. Below 17 K, a smooth transition to the helicoidal magnetic phase has been observed, with the collinear phase coexisting with the helicoidal one. Data presented in this article contradict the earlier concept of magnetic moments fluctuating in the low-temperature phase near the C2 axis within the ±10° interval.

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Публикация на русском языке Оптический линейный дихроизм в ab-плоскости ферробората NdFe3(BO3)4 [Текст] / К. Н. Болдырев, М. Диаб, И. А. Гудим, М. Н. Попова. - 6 с. // Журн. эксперим. и теор. физ. - 2023. - Т. 164 Вып. 4 : Специальный выпуск, посвященный 95-летию Л. А. Прозоровой. - С. 563-568

Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, 108840, Troitsk, Moscow, Russia
Moscow Institute of Physics and Technology (State University), 141700, Dolgoprudnyi, Moscow oblast, Russia
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Boldyrev, K. N.; Diab, M.; Gudim, I. A.; Гудим, Ирина Анатольевна; Popova, M. N.
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    Pressure–temperature phase diagram of multiferroic TbFe2.46Ga0.54(BO3)4 / A. Krylov, S. Krylova, I. Gudim [et al.] // Magnetochemistry. - 2022. - Vol. 8, Is. 6. - Ст. 59, DOI 10.3390/magnetochemistry8060059. - Cited References: 48. - The research of Krylov A. and Gudim I. was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-42-240009. This work of Vtyurin A., Krylova S. was financially supported by the Russian Foundation for Basic Research and DFG (Deutsche Forschungsgemeinschaft) project number No 21-52-12018. The experiments were performed in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” . - ISSN 2312-7481
   Перевод заглавия: Фазовая диаграмма температура-давление мультиферроика TbFe2.46Ga0.54(BO3)4
Кл.слова (ненормированные):
ferroborate -- phase transitions -- multiferroics -- p–T phase diagram
Аннотация: The pressure–temperature phase diagram of the multiferroic TbFe2.46Ga0.54(BO3)4 was studied for hydrostatic pressures up to 7 GPa and simultaneously with temperatures up to 400 K by the Raman spectroscopy technique. The structural phase transition from the R32 phase to the P3121 phase was determined by observing the condensation of soft modes and the appearance of new lines. An increase in pressure leads to an increase in the temperature of the structural phase transition. These phases are stable over the entire investigated temperature and pressure range. No other phases have been found.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Ioffe Institute, Politekhnicheskaya 26, St. Petersburg, 194021, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Krylova, S. N.; Крылова, Светлана Николаевна; Gudim, I. A.; Гудим, Ирина Анатольевна; Kitaev, Y.; Golovkina, E.; Zhang, H.; Vtyurin, A. N.; Втюрин, Александр Николаевич
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Phase transitions and p–T phase diagram of the multiferroic TbFe3(BO3)4 crystal / A. Krylov, M. Pavlovskiy, Y. Kitaev [et al.] // J. Raman Spectrosc. - 2022. - Vol. 53, Is. 6. - P. 1179-1187, DOI 10.1002/jrs.6341. - Cited References: 48. - Russian Foundation for Basic Research; RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, Grant/Award Number: 20-42-240009; Russian Foundation for Basic Research and DFG (Deutsche Forschungsgemeinschaft), Grant/Award Numbers: 448809307, 21-52-12018 . - ISSN 0377-0486. - ISSN 1097-4555

РУБ Spectroscopy
Рубрики:
BILBAO CRYSTALLOGRAPHIC SERVER
RAMAN-SPECTRA
HIGH-TEMPERATURE
Кл.слова (ненормированные):
ab initio calculation -- ferroborate -- multiferroic -- phase transitions -- p-T phase diagram
Аннотация: The structural phase transitions in multiferroic TbFe3(BO3)4 with change hydrostatic pressures and temperatures have been studied by Raman spectroscopy and calculation within density functional theory. Lattice dynamics calculations in the TbFe3(BO3)4 crystal in the ��32 phase under various values of applied hydrostatic pressure (from 0 up to 5 GPa with 1 GPa step) were performed. The calculation performed in this work in a TbFe3(BO3)4 crystal showed that the applied pressure can increase the phase transition temperature. Raman spectra of the TbFe3(BO3)4 crystal have been investigated at simultaneously high temperature and high pressure (up to 5.14 GPa and 465 K). The appearance of a soft mode was observed with decreasing temperature at normal pressure. The manifestations of the interaction of the structural and magnetic order parameters in the range from 13 to 50 K were observed at normal pressure. With increasing pressure and a fixed temperature, recovery of the soft modes is also observed. The experimental p–T phase diagram of TbFe3(BO3)4 was established. An increase in pressure leads to an increase in the temperature of transition.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia.
Siberian Fed Univ, Photon & Laser Technol, Krasnoyarsk, Russia.
Ioffe Inst, Politekhnicheskaya 26, St Petersburg, Russia.
Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan, Peoples R China.
Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan, Peoples R China.

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Pavlovskiy, M. S.; Павловский, Максим Сергеевич; Kitaev, Y.; Gudim, I. A.; Гудим, Ирина Анатольевна; Andryshin, N. D.; Андрюшин, Никита Дмитриевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Jiang, Qinghui; Krylova, S. N.; Крылова, Светлана Николаевна; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science [20-42-240009]; Russian Foundation for Basic Research and DFG (Deutsche Forschungsgemeinschaft)German Research Foundation (DFG) [448809307, 21-52-12018]
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Raman scattering study of the rare-earth binary ferroborate Nd0.75Dy0.25Fe3(BO3)4 single crystal / A. Y. Glamazda, V. P. Gnezdilov, P. Lemmens [et al.] // Low Temp. Phys. - 2021. - Vol. 47, Is. 12. - P. 1011-1021, DOI 10.1063/10.0007074. - Cited References: 25. - A. Yu. Glamazda thanks Dr. A. V. Peschanskii for fruitful discussions. P. Lemmens acknowledges funding by the DFG Excellence Cluster Quantum Frontiers, EXC 2123-390837967, DFG Le967/16-1, and DFG-RTG 1952/1 . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied
Рубрики:
MAGNETIC PHASE-TRANSITIONS
SPIN REORIENTATION
Аннотация: We report comprehensive Raman scattering measurements on a single crystal of binary ferroborate Nd0.75Dy0.25Fe3(BO3)4 in the temperature range of 7–295 K with 532 nm (18797 cm−1) laser excitation. The performed analysis of the polarized Raman spectra revealed the bands assigned to phonon, magnetic, and electronic excitations. The temperature evolution of these quasiparticle excitations has allowed us to ascertain the intricate coupling and interplay between lattice, magnetic, and electronic degrees of freedom. Analysis of the measured Raman spectra made it possible to identify all A1 and E phonon modes predicted by the group-theoretical analysis. The splitting energies between the LO and TO components of the polar E phonons were determined. Below the magnetic ordering temperature of the Fe sublattice, TN, we have revealed a multiple peaked two-magnon excitation. Analyzing the temperature evolution of low-frequency modes in the spectra, we also identified modes that are associated with electronic transitions between the crystal field levels of the Nd3+ ions with ground-state 4I9/2 and of the Dy3+ ions with ground-state 6H15/2 multiplets. In addition to the already known temperatures of magnetic transitions, analysis of the temperature behavior of low-frequency phonon and electronic excitations made it possible to establish a temperature T* = 100 K, presumably associated with local distortions of the crystal lattice. The presence of this temperature is confirmed by our ultrasonic study. A group of intense bands observed in the frequency range 1700–2200 cm−1 has been associated with the mixed low-lying electronic Raman transitions 4I9/2→4I11/2 and the high-energy luminescence ones 4G5/2+2G7/2→4I9/2 for the Nd3+ ion.

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Публикация "на русском языке" Raman scattering study of the rare-earth binary ferroborate Nd0.75Dy0.25Fe3(BO3)4 single crystal [Текст] / A. Yu. Glamazda, V. P. Gnezdilov, P. Lemmens [et al.] // Физ. низких температур. - 2021. - Т. 47 Вып. 12.- С.1107-1118 ; Fiz. Nizk. Temp.

Держатели документа:
Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkiv, Ukraine.
Kharkov Natl Univ, UA-61022 Kharkiv, Ukraine.
TU Braunschweig, Inst Condensed Matter Phys, D-38106 Braunschweig, Germany.
TU Braunschweig, Lab Emerging Nanometrol, D-38106 Braunschweig, Germany.
TU Braunschweig, Int Grad Sch Metrol, D-38106 Braunschweig, Germany.
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Glamazda, A. Yu.; Gnezdilov, V. P.; Lemmens, P.; Zvyagina, G. A.; Gudim, I. A.; Гудим, Ирина Анатольевна; DFG Excellence Cluster Quantum FrontiersGerman Research Foundation (DFG) [EXC 2123-390837967, DFG Le967/16-1, DFG-RTG 1952/1]
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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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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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    Raman scattering study of the rare-earth binary ferroborate Nd0.75Dy0.25Fe3(BO3)4 single crystal / A. Yu. Glamazda, V. P. Gnezdilov, P. Lemmens [et al.] // Физ. низких температур. - 2021. - Т. 47, Вып. 12. - С. 1107-1118 ; Fiz. Nizk. Temp. - Cited References: 26. - A. Yu. Glamazda thanks to Dr. A. V. Peschanskii for fruitful discussions. P. Lemmens acknowledges funding by the DFG Excellence Cluster Quantum Frontiers, EXC 2123-390837967, DFG Le967/16-1, and DFG-RTG 1952/1 . - ISSN 0132-6414
   Перевод заглавия: Раманівська спектроскопія монокристала рідкісноземельного бінарного фероборату Nd0,75Dy0,25Fe3(BO3)4
Кл.слова (ненормированные):
ferroborates -- Raman spectroscopy -- luminescence -- фероборати -- раманівськa спектроскопія -- люмінесценція
Аннотация: We report comprehensive Raman scattering measurements on a single crystal of binary ferroborate Nd0.75Dy0.25Fe3(BO3)4 in the temperature range of 7–295 K with 532 nm (18797 cm–1) laser excitation. The performed analysis of the polarized Raman spectra revealed the bands assigned to phonon, magnetic, and electronic excitations. The temperature evolution of these quasiparticle excitations has allowed us to ascertain the intricate coupling and interplay between lattice, magnetic, and electronic degrees of freedom. Analysis of the measured Raman spectra made it possible to identify all A1 and Е phonon modes of predicted by the group-theoretical analysis. The splitting energies between the LO and TO components of the polar E phonons were determined. Below the magnetic ordering temperature of the Fe sublattice, TN, we have revealed a multiple peaked two-magnon excitation. Analyzing the temperature evolution of low-frequency modes in the spectra, we also identi-fied modes that are associated with electronic transitions between the crystal field levels of the Nd3+ ions with ground-state 4I9/2 and of the Dy3+ ions with ground-state 6H15/2 multiplets. In addition to the already known temperatures of magnetic transitions, analysis of the temperature behavior of low-frequency phonon and electronic excitations made it possible to establish a temperature T * = 100 K, presumably associated with local distortions of the crystal lattice. The presence of this temperature is confirmed by our ultrasonic study. A group of intense bands observed in the frequency range of 1700–2200 cm–1 has been associated with the mixed low-lying electronic Raman transitions 4I9/2→4I11/2 and the high-energy luminescence ones 4G5/2+2G7/2→4I9/2 for the Nd3+ ion.
Представлено результати раманівських досліджень монокристала бінарного фероборату Nd0,75Dy0,25Fe3(BO3)4 при лазерному збудженні 532 нм (18797 см–1) в діапазоні температур 7–295 K. Аналіз отриманих поляризованих раманівських спектрів виявив смуги, які були віднесені до фононних, магнітних та електронних збуджень. На підставі температурної еволюції смуг встановлено складний зв’язок та взаємодію між гратковими, магнітними й електронними ступенями свободи. Аналіз отриманих спектрів дозволив виявити всі А1 та Е фононні моди, передбачені груповим теоретичним аналізом. Визначено енергії розщеплення між LO і TO компонентами полярних E-фононів. Нижче температури магнітного впорядкування Fe-підгратки, TN, виявлена складна багатопікова смуга, яка віднесена до двомагнонного збудження.Температурна залежність низькочастотних раманівських спектрів виявила моди, пов’язані з електронними переходами між рівнями мультиплетів 4I9/2 основного стану Nd3+ та 6H15/2 основного стану Dy3+, отримані в результаті дії кристалічного поля. Аналіз температурної поведінки низькочастотних фононних та електронних збуджень дозволив встановити аномалію поблизу T * = 100 K, ймовірно, пов’язану з локальними спотвореннями кристалічної гратки. Наявність цієї температури підтверджується ультразвуковими дослідженнями. Група інтенсивних смуг, що спостерігається в раманівському спектрі в діапазоні частот 1700–2200 см–1, пов’язана зі змішаними низько розташованими електронними раманівськими 4I9/2 → 4I11/2 та високоенергетичними люмінесцентними 4G5/2 + 2G7/2→4I9/2 переходами в Nd3+ іоні.

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Переводная версия Raman scattering study of the rare-earth binary ferroborate Nd0.75Dy0.25Fe3(BO3)4 single crystal [Текст] / A. Y. Glamazda, V. P. Gnezdilov, P. Lemmens [et al.] // Low Temp. Phys. - 2021. - Vol. 47 Is. 12.- P.1011-1021

Держатели документа:
B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Kharkiv, 61103, Ukraine
V. N. Karazin Kharkiv National University, Kharkiv, 61022, Ukraine
Institute for Condensed Matter Physics, TU-Braunschweig, Braunschweig, 38106, Germany
Laboratory for Emerging Nanometrology, International Graduate School of Metrology, TU-Braunschweig, Braunschweig, 38106, Germany
L. V. Kirenskii Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Glamazda, A. Yu.; Gnezdilov, V. P.; Lemmens, P.; Zvyagina, G. A.; Gudim, I. A.; Гудим, Ирина Анатольевна

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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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Titova, Veronika.
Growth of single crystals of trigonal ferroborate Ho0,5Nd0,5Fe3(BO3)4 with the huntite structure depending on the crystallochemical growth conditions / V. R. Titova, I. A. Gudim // Химия, физика, биология, математика: теоретические и прикладные исследования : сб. статей по материалам XXXIV междун. науч.-практич. конф. - 2020. - Т. 3 (24). - P. 123-129

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Источник статьи
Держатели документа:
Kirensky Institute of Physics
Sibirian Federal University

Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Химия, физика, биология, математика: теоретические и прикладные исследования, международная научно-практическая конференция(34 ; 2020 ; 17 марта ; Москва)
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10.

    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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11.

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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12.

    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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13.

    Temperature-dependent absorption lines observation in Raman spectra of SmFe3 (BO3)4 ferroborate / E. Moshkina [et al.] // J. Raman Spectrosc. - 2018. - Vol. 49, Is. 10. - P. 1732-1735, DOI 10.1002/jrs.5430. - Cited References: 12. - RFBR, Grant/Award Numbers: 18-02-00696 and 18-02-00754 . - ISSN 0377-0486. - ISSN 1097-4555
   Перевод заглавия: Температурно зависимые линии поглощения в спектрах комбинационного рассеяния ферробората SmFe3(BO3)4

РУБ Spectroscopy
Рубрики:
SmFe3 (BO3)4
Ho1-xNdxFe3(BO3)4
CRYSTALS
Кл.слова (ненормированные):
absorption -- ferroborates -- huntite -- level splitting -- magnetic phase -- transitions
Аннотация: The paper demonstrates possibilities of observation and thermal dependency study of the absorption lines as a co‐product of Raman spectroscopy study in SmFe3 (BO3)4 ferroborate. Raman spectra of the ferroborate were studied in a wide temperature range (T = 10÷300 K). Temperature‐dependent absorption lines sensitive to the magnetic phase transition have been observed in Raman spectra at two spectral ranges.

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

Доп.точки доступа:
Moshkina, E. M.; Мошкина, Евгения Михайловна; Gudim, I. A.; Гудим, Ирина Анатольевна; Temerov, V. L.; Темеров, Владислав Леонидович; Krylov, A. S.; Крылов, Александр Сергеевич; RFBR [18-02-00696, 18-02-00754]
}
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14.

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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15.

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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16.

Peschanskii, A. V.
Raman scattering in multiferroic SmFe3(BO3)4 / A. V. Peschanskii, V. I. Fomin, I. A. Gudim // Low Temp. Phys. - 2016. - Vol. 42, Is. 6. - P. 475-483, DOI 10.1063/1.4954783. - Cited References:21 . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied
Рубрики:
SINGLE-CRYSTALS
   MAGNETOELASTIC PROPERTIES
   PHASE-TRANSITIONS
   FERROBORATE
   PHONONS
Аннотация: Raman spectrum of single-crystal SmFe3(BO3)4 was studied in the frequency range from 3 to 1500 cm−1 at temperatures 10–300 K. All the A 1 and E phonon modes predicted by the group theory for a given symmetry of the crystal were observed. The magnitudes of splitting between the LO and TO components of polar E phonons were determined. It was found that under the transition to a magnetically ordered phase, the behavior of the intensity of the line corresponding to the A 1 vibrational mode is anomalous. It was shown that at low temperatures the spectrum of two-magnon excitations has a complex shape and is observed with both nondiagonal and diagonal components of the scattering tensor. This complex shape reflects the features in the density of states of the magnetic branches. An estimate of the magnon energy Em at the Brillouin zone boundary gave ∼47 cm−1. The structure of the ground multiplet 6 H 5/2 of a Sm+3 ion in paramagnetic and antiferromagnetic states as well as the effect of the magnetic phase transition on it were studied. Electron-phonon interaction for the electronic excitation at 225 cm−1 was revealed.

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Публикация на русском языке Песчанский А. В. Рамановское рассеяние света в мультиферроике SmFe3(BO3)4 [Текст] / А. В. Песчанский, В. И. Фомин, И. А. Гудим // Физ. низких температур. - Харьков : Физико-технический институт низких температур им. Б.И. Веркина Национальной академии наук Украины, 2016. - Т. 42 Вып. 6. - С. 607-618

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

Доп.точки доступа:
Fomin, V. I.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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17.

Study of phase transitions in ferroborate crystals with structure of huntite mineral / A. S. Krylov [и др.] // XII Int. conf. "GeoRaman-2016" : abstract volume / compiled and edited by T.A. Alifirova, S.V. Rashchenko, A.V. Korsakov. - Novosibirsk : Офсет, 2016. - P. 16. - References: 3 . - ISBN 978-5-85957-124-6
Аннотация: Multiferroic materials showing the coexistence of at least two ferroic orders ((anti)ferroelectric, (anti)ferromagnetic and (anti)ferroelasticity) are expected to find potential applications in many devices. Amongst these properties the coexistence of ferroelectricity and ferromagnetism is highly desired. Besides their coexistence, of utmost importance is a strong coupling between the two ferroic orders. In multiferroic materials, the coupling interaction between the different order parameters can produce additional functionalities. The application of multiferroics will make possible to significantly enlarge the functional possibilities of spintronics. Crystals of the RFe3(BO3)4 family (R is rare earth ion) with huntite mineral structure were reported to possess multiferroic features, demonstrating both structural and magnetic phase transitions [1 –4], where transition points may be varied by rare earth composition. In this work we used Raman spectroscopy to study Ho1–xNdxFe3(BO3)4 (x = 0, 0.25, 0.5, 0.75) single crystals. Raman measurements on HoFe3(BO3) crystal were carried out at pressures up to 7 GPa and at temperatures up to 680 K by using a diamond anvil cell in order to determine the pressure–temperature phase diagram. From the changes in the Raman spectrum at the phase transition, the stability regions of phases I, II were investigated (Figure 1). After reaching 675 K and 2.5 GPa Raman spectra lines disappear and formation of a new crystalline form was discovered. This form persists ambient condition after removing high pressure and temperature.

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Доп.точки доступа:
Alifirova, T. A. \ed.\; Rashchenko, S. V. \ed.\; Korsakov, A. V. \ed.\; Krylov, A. S.; Крылов, Александр Сергеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Krylova, S. N.; Крылова, Светлана Николаевна; Vtyurin, A. N.; Втюрин, Александр Николаевич; "GeoRaman", International conference(12 ; 2016 ; June ; 9-15 ; Novosibirsk); Российская академия наук; Сибирское отделение РАН; Институт геологии и минералогии им. В.С. Соболева Сибирского отделения РАН
}
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18.

Raman spectroscopic study of phase transitions in rare earth ferroborate multiferroic crystals under temperature and high-pressure / A. S. Krylov [и др.] // The 8th International Conference on Advanced Vibrational Spectroscopy at TU Wien : abstracts. - 2015. - P. 320 . - ISBN 978-3-200-04205-6

Материалы конференции

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Sofronova, S. N.; Софронова, Светлана Николаевна; Gudim, I. A.; Гудим, Ирина Анатольевна; Krylova, S. N.; Крылова, Светлана Николаевна; Vtyurin, A. N.; Втюрин, Александр Николаевич; International conference on advanced vibrational spectroscopy at TU wien(8 ; 2015 ; July ; 12-17 ; Vienna, Austria)
}
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19.

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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20.

Temperature and high pressure study of structural and magnetic phase transitions in rear earth ferroborate crystals by raman spectroscopy / A. S. Krylov [и др.] // The 13th Europ. Meeting on Ferroelectricity (EMF 2015) : program. - 2015. - P. 57
Аннотация: Crystals of the RFe3(BO3)4 family (R is rare earth ion) were reported to possess multiferroic features, demonstrating both structural and magnetic phase transitions [1-4], where transition points may be varied by rare earth composition. In this work we used Raman spectroscopy to study Ho(1 – x)NdxFe3(BO3)4 (x = 0, 0.25, 0.5, 0.75) crystals. Temperature measurements were performed in the temperature range 10–400 K. The aim of this study is to investigate possible existence of a soft mode related to structural order parameter and effects of magnetic transitions on Raman spectra. Structural transitions manifest clearly by soft mode restoration and new Raman lines appearance below 366 K and 203 K for x = 0 и x = 0.25 compositions respectively. In Nd-doped crystals significant modification of Raman scattering was induced by magnetic ordering below the Neel temperature (about 40 K), that include both magnon scattering and strong intensity redistribution of high frequency lattice modes. Analysis of vibrational spectra and its numerical simulation demonstrate that bigger cell volume of Nd-containing solid solutions provides bigger displacements of oxygen ions in a BO3 groups below the Neel temperature that results in stronger magnetoelastic interactions. This leads to the appearance of additional lines in the Raman spectra and rapid increase of their intensity with increasing magnetic order. Raman measurements on HoFe3(BO3) crystal were carried out at pressures up to 7 GPa and at temperatures up to 680 K by using a diamond anvil cell in order to determine the pressure–temperature phase diagram. From the changes in the Raman spectrum at the phase transition, the stability regions of phases I, II were investigated. After reaching 675 K and 2.5 GPa Raman spectra lines disappear and formation of a new crystalline form was discovered. This form persists ambient condition after removing high pressure and temperature. The work was supported by Grant of the Ministry of Education and the Russian Foundation for Basic Research Grants 13-02-00825.

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Safronova, S.; Gudim, I. A.; Гудим, Ирина Анатольевна; Moshkina, E. M.; Мошкина, Евгения Михайловна; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Shabanov, A. V.; Шабанов, Александр Васильевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Krylova, S. N.; Крылова, Светлана Николаевна; European Meeting on Ferroelectricity(13 ; 2015 ; 28 June - 03 July ; Porto, Portugal)
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