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Hidden magnetic instability in the substituted multiferroics (Nd, Tb)Fe3(BO3)4 / I. V. Golosovsky, A. A. Mukhin, V. Skumryev [et al.] // Phys. Rev. B. - 2024. - Vol. 109, Is. 1. - Ст. 014421, DOI 10.1103/PhysRevB.109.014421. - Cited References: 22. - The authors are grateful to Prof. B. Z. Malkin for fruitful discussions. I.V.G. acknowledges financial support from the Russian Foundation for Basic Research under Grant No. 20-02-00109. A.A.M. and V.Yu.I. acknowledge financial support of the magnetic studies and the developed model from the Russian Science Foundation under Project No. 22-42-05004 . - ISSN 2469-9950. - ISSN 2469-9969
Аннотация: In the substituted Nd1–xTbxFe3(BO3)4 (x=0.1 and x=0.2), possessing almost easy-axis magnetic structure at low temperatures, an unusual two-step transition in fields along the trigonal c axis was observed by magnetization and single-crystal neutron diffraction studies. At the first step, only part of the Tb Ising-type moments flip to the c axis, which is accompanied by a significant deviation of the antiferromagnetic Fe spins from the c axis. At the second step, the remaining Tb moments flip and the Fe moments flop into the basal plane. The observed evolution is qualitatively explained by a model assuming small deviations of Tb moments from the trigonal axis due to local environment distortions, which leads to nonequivalence of the Tb ions with respect to effective Tb-Fe exchange and external field. Thus, an intrinsic “hidden” instability of the magnetic system in the magnetic field occurs.

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Держатели документа:
National Research Center “Kurchatov Institute”, B. P. Konstantinov Petersburg Nuclear Physics Institute, 188300 Gatchina, Russia
Prokhorov General Physics Institute, RAS, 119991 Moscow, Russia
Institucio Catalana de Recerca i Estudis Avancats, E-08010 Barcelona, Spain
Universite Grenoble Alpes, CEA, IRIG, MEM, MDN, 38000 Grenoble, France
Kirenskii Institute of Physics, Siberian Division of RAS, 660038 Krasnoyarsk, Russia

Доп.точки доступа:
Golosovsky, I. V.; Mukhin, A. A.; Skumryev, V.; Ressouche, E.; Ivanov, V. Yu.; Gudim, I. A.; Гудим, Ирина Анатольевна
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Magnetic ordering and chirality in multiferroic Dy1-xHoxMnO3 (x = 0.2) / A. N. Matveeva, I. A. Zobkalo, A. Sazonov [и др.] // Phys. B: Condens. Matter. - 2023. - Vol. 658. - Ст. 414821, DOI 10.1016/j.physb.2023.414821. - Cited References: 41. - The authors are grateful to D.A. Balaev for fruitful discussions and crystal growth management. This work was supported by the Russian Foundation for Basic Research grant # 19-52-12047, and DFG grant # SA3688/1-1, also by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects number 18-42-243024 and 20-42-243008. The neutron data were obtained at the instrument POLI operated jointly by RWTH Aachen University and Jülich Centre for Neutron Science within JARA cooperation . - ISSN 0921-4526. - ISSN 1873-2135
Кл.слова (ненормированные):
Neutron diffraction -- Crystal structure -- Multiferroics -- Magnetic structure -- Manganites
Аннотация: Effect of substitution Dy by Ho on the magneto-electric behavior of the compound Dy0.8Ho0.2MnO3 was investigated by the different methods of polarized and classical neutron diffraction and macroscopic methods. It is shown that substitution by Ho of 20% on the position of Dy do not change overall crystal symmetry of compound. It remains of Pbnm type down to the very low temperatures. Magnetic ordering, its temperature and field evolution was determined by the use of single crystal neutron diffraction and magnetization measurements. Chiral type of magnetic structure on Mn subsystem is confirmed below Tc ≈ 16 K. Using polarized neutron diffraction the 3-component character of rare earth magnetic ordering in Dy0.8Ho0.2MnO3 in contrast to DyMnO3 could be revealed. It was shown that doping by 20% Ho suppresses the spontaneous rare-earth ordering with its own propagation vector and provides the situation when two magnetic subsystems, manganese and rare earth ones have a coherent incommensurate spatial propagation. The influence of the external electric field on the magnetic chirality could be directly evidenced, proving strong magneto-electric coupling in multiferroic phase. The study of the electric polarization under similar temperatures and fields on the same samples provides the direct correlation between the results of the microscopic and macroscopic investigations.

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Держатели документа:
Petersburg Nuclear Physics Institute by B.P. Konstantinov of NRC «Kurchatov Institute», 188300, Gatchina, Russia
Institute of Crystallography, RWTH Aachen University and Jülich Centre for Neutron Science at Heinz Maier- Leibnitz Zentrum, Garching, Germany
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk, 660036, Russia
Siberian Federal University, Krasnoyarsk, 660041, Russia

Доп.точки доступа:
Matveeva, A. N.; Zobkalo, I. A.; Sazonov, A.; Freidman, A. L.; Фрейдман, Александр Леонидович; Semenov, S. V.; Семёнов, Сергей Васильевич; Kolkov, M. I.; Колков, Максим Игоревич; Terentjev, K. Yu.; Терентьев, Константин Юрьевич; Pavlovskiy, N. S.; Павловский, Николай Сергеевич; Shaykhutdinov, K. A.; Hutanu, V.
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Complex interplay between 3d and 4f magnetic systems in multiferroic DyMnO3 / A. N. Matveeva, I. A. Zobkalo, M. Meven [et al.] // J. Magn. Magn. Mater. - 2023. - Vol. 569. - Ст. 170415, DOI 10.1016/j.jmmm.2023.170415. - Cited References: 28. - The authors are grateful to S.V. Gavrilov for the technical assistance. This work was supported by the Russian Foundation for Basic Research grant # 19-52-12047, and DFG grant # SA 3688/1-1, also by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects number 18-42-243024 and 20-42-243008. The neutron data were obtained at the instrument HEiDi operated jointly by RWTH Aachen University and Jülich Centre for Neutron Science within JARA cooperation . - ISSN 0304-8853
Кл.слова (ненормированные):
Neutron diffraction -- Crystal structure -- Multiferroics -- Magnetic structure -- Manganites
Аннотация: Structural and magnetic properties of single crystals of DyMnO3 were investigated by neutron diffraction in order to study the peculiarities of 3d-4f interactions in this compound. Precise magnetic order and its detailed temperature evolution were determined using single crystal neutron diffraction. Elliptical cycloid on manganese subsystem below TCh = 19 K was confirmed, with temperature decrease the elipticity of the Mn magnetic structure reduces significantly, creating almost circular cycloid. Temperature evolution of the magnetic structure demonstrate specific hysteretic behavior. The results show a complex interplay between transition metal and rare earth magnetic sublattices leading to so-called “Mn- controlled” and “Dy- controlled” magnetic states. The strong and complicate 3d-4f interaction leads to the unusual very slow magnetic structure relaxation.

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Держатели документа:
Petersburg Nuclear Physics Institute by B.P. Konstantinov of NRC «Kurchatov Institute», Gatchina, 188300, Russian Federation
Institute of Crystallography, RWTH Aachen University and Julich Centre for Neutron Science at Heinz Maier- Leibnitz Zentrum, Garching, Germany
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Matveeva, A. N.; Zobkalo, I. A.; Meven, M.; Freidman, A. L.; Фрейдман, Александр Леонидович; Semenov, S. V.; Семёнов, Сергей Васильевич; Terentjev, K. Yu.; Терентьев, Константин Юрьевич; Pavlovskiy, N. S.; Павловский, Николай Сергеевич; Kolkov, M. I.; Колков, Максим Игоревич; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Hutanu, V.
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    Krylov, A. S.
    Phase transitions in multiferroics ferroborates with huntite structure / A. S. Krylov // Materials Science and Nanotechnology (MSN-2023) : abstract book of International conference / Ural Federal University; org. com. A. N. Vtyurin et al. - Ekaterinburg, 2023. - Ст. 114. - P. 25. - Cited References: 3. - RFBR funded the reported study according to the research project № 21-52-12018 . - ISBN 978-5-9500624-6-9
   Перевод заглавия: Фазовые переходы в мультиферроиках ферроборатов со структурой хантита

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Держатели документа:
Kirensky Institute of Physics SB RAS

Доп.точки доступа:
Vtyurin, A. N. \org. com.\; Втюрин, Александр Николаевич; Крылов, Александр Сергеевич; Уральский Федеральный университет им. Первого Президента России Б.Н. Ельцина; Ural Federal University; "Materials science and nanotechnology", International conference(2023 ; Aug. 27-30 ; Ekaterinburg)
}
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Terahertz spectroscopy of magnetoelectric HoAl3(BO3)4 / A. M. Kuzmenko, V. Yu. Ivanov, A. Yu. Tikhanovsky [et al.] // Opt. Spectrosc. - 2023. - Vol. 131, Is. 6. - P. 409-414, DOI 10.1134/S0030400X23020121. - Cited References: 18. - This study was partially financially supported by the Russian Science Foundation (project 16-12-10531) . - ISSN 0030-400X. - ISSN 1562-6911
Кл.слова (ненормированные):
Terahertz spectroscopy -- rare earth aluminum borates -- multiferroics -- electron transitions
Аннотация: Experimental and theoretical study of submillimeter (terahertz) spectroscopic and magnetic properties of the rare-earth aluminum borate HoAl3(BO3)4 were performed at temperatures 3–300K. In the transmittance spectra a number of resonance lines were detected at frequencies 2–35 cm–1 for different radiation polarizations. These modes were identified as transitions between the lower levels of the ground multiplet of the Ho3+ ion split by the crystal field, including both transitions from the ground state to the excited ones and transitions between the excited states. The established excitation conditions of the observed modes and the simulation of the spectra made it possible to separate the magnetic and electric dipole transitions and to determine the energies of the corresponding states, their symmetry, and the matrix elements of the transitions. Low-frequency lines that do not fit into the established picture of the electron states of Ho3+ were also found; these lines, apparently, correspond to the ions with the distorted by defects local symmetry of the crystal field.

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Публикация на русском языке Терагерцовая спектроскопия магнитоэлектрика HoAl3(BO3)4 [Текст] / А. М. Кузьменко, В. Ю. Иванов, А. Ю. Тихановский [и др.]. - 6 с. // Опт. и спектроскоп. - 2022. - Т. 130 Вып. 1. - С. 59-64

Держатели документа:
Prokhorov Institute of General Physics, Russian Academy of Sciences, 119991, Moscow, Russia
Institute of Solid State Physics, Vienna University of Technology, 1040, Vienna, Austria
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Kuzmenko, A. M.; Ivanov, V. Yu.; Tikhanovsky, A. Yu.; Pimenov, A. G.; Shuvaev, A. M.; Gudim, I. A.; Гудим, Ирина Анатольевна; Mukhin, A. A.
}
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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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    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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    Anisotropy of the electromechanical characteristics of SH-waves and Lamb waves in yttrium aluminum borate single crystals / P. P. Turchin, S. I. Burkov, V. I. Turchin [et al.] // J. Sib. Fed. Univ. Math. Phys. - 2022. - Vol. 15, Is. 1. - P. 80-87 ; Журн. СФУ. Матем. и физика, DOI 10.17516/1997-1397-2022-15-1-80-87. - Cited References: 24. - The study was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (research project code FSRZ-2020-0011) . - ISSN 1997-1397. - ISSN 2313-6022
   Перевод заглавия: Анизотропия и электромеханические характеристики SH-волн и волн Лэмба в монокристаллах иттриевого алюмобората

РУБ Mathematics

Кл.слова (ненормированные):
surface acoustic, SH and Lamb waves -- piezoelectrics -- multiferroics -- yttrium aluminum borates -- поверхностные акустические, SH- и Лэмба волны -- пьезоэлектрики -- мультиферроики -- алюмоборат иттрия
Аннотация: The anisotropy of the electromechanical properties of SH-waves and Lamb waves in yttrium aluminum borates, which are nonmagnetic representatives of the RMe3(BO3)4 single crystals family (where R=Y, La-Lu; M=Fe, Al, Cr, Ga, Sc) with unique properties of magnetoelectrics and multiferroics, has been studied. In the process of the numerical simulation of the acoustic waves characteristics, the values of linear electromechanical constants of YAl3(BO3)4 single crystals, previously measured by ultrasonic pulse echo and quasi-static methods, have been used.
Исследована анизотропия электромеханичеких характеристик SH-волн и волн Лэмба в иттриевых алюмоборатах, которые являются немагнитным представителем семейства монокри- сталлов RMe3(BO3)4 (где R=Y, La-Lu; M=Fe, Al, Cr, Ga, Sc) с уникальными свойствами магнитоэлектриков и мультиферроиков. При численном моделировании характеристик акустических волн использованы значения линейных электромеханических постоянных монокристаллов YAl3(BO3)4, измеренных ранее ультразвуковым эхо-импульсным и квазистатическим методами.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia.

Доп.точки доступа:
Turchin, Pavel P.; Турчин, Павел Петрович; Burkov, S. I.; Turchin, Vladimir, I; Pletnev, Oleg N.; Chulkova, Marina Yu; Nechepuryshina, Anastasia G.; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0011]

}
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Magnetic properties and structural anomalies observed in multiferroic NdFe3(BO3)4 by 57Fe Mossbauer spectroscopy / K. V. Frolov, I. S. Lyubutin, O. A. Alekseeva [et al.] // J. Alloys Compd. - 2022. - Vol. 909. - Ст. 164747, DOI 10.1016/j.jallcom.2022.164747. - Cited References: 61. - This work was supported by the Russian Ministry of Science and Higher Education within the State assignment FSRC "Crystallography and Photonics" RAS and performed using the equipment of the Shared Research Center "Structural diagnostics of materials" of FSRC "Crystallography and Photonics" RAS . - ISSN 0925-8388
Кл.слова (ненормированные):
Multiferroics -- Rare earth - iron compounds -- X-ray diffraction -- Mossbauer spectroscopy -- Commensurate and incommensurate magnetic structures
Аннотация: The results of studies of the NdFe3(BO3)4 by 57Fe Mossbauer spectroscopy in comparison with the data of single crystal X-ray diffraction measurements are presented. Scanning of the crystal cell parameters in a wide temperature range T = 15–500 K revealed a negative thermal expansion along the c axis and structural anomalies. The temperature dependences of the Mössbauer parameters of hyperfine interaction in the paramagnetic state of NdFe3(BO3)4 correlate well with the behavior of crystal cell parameters obtained by X-ray diffraction data. The temperature of the magnetic phase transition TN = 32.54(4) K is established, below which the iron ions form a 3D magnetic order of the Izing type. The magnetic transition of the iron subsystem from a commensurate to an incommensurate structure at a temperature of about T ≈ 15 K is discussed. The "Mössbauer" Debye temperature ΘM was estimated to be 485(2) K.

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Держатели документа:
Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” RAS, Moscow, 119333, Russian Federation
Kirensky Institute of Physics, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Frolov, K. V.; Lyubutin, I. S.; Alekseeva, O. A.; Smirnova, E. S.; Dudka, A. P.; Verin, I. A.; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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10.

Terahertz spectroscopy of magnetoelectric HoAl3(BO3)4 / A. M. Kuzmenko, V. Yu. Ivanov, A. Yu. Tikhanovskii A. Yu. [et al.] // Opt. Spectrosc. - 2022. - Vol. 130, Is. 1. - P. 54-59, DOI 10.21883/EOS.2022.01.52987.33-21. - Cited References: 18. - This study was partially financially supported by the Russian Science Foundation (project 16-12-10531) . - ISSN 0030-400X. - ISSN 1562-6911
Кл.слова (ненормированные):
terahertz spectroscopy -- rare earth aluminum borates -- multiferroics -- electron transitions
Аннотация: Experimental and theoretical study of submillimeter (terahertz) spectroscopic and magnetic properties of the rare-earth aluminum borate HoAl3(BO3)4 were performed at temperatures 3–300 K. In the transmittance spectra a number of resonance lines were detected at frequencies 2–35 cm-1 for different radiation polarizations. These modes were identified as transitions between the lower levels of the ground multiplet of the Ho3+ ion split by the crystal field, including both transitions from the ground state to the excited ones and transitions between the excited states. The established excitation conditions of the observed modes and the simulation of the spectra made it possible to separate the magnetic and electric dipole transitions and to determine the energies of the corresponding states, their symmetry, and the matrix elements of the transitions. Low-frequency lines that do not fit into the established picture of the electron states of Ho3+ were also found; these lines, apparently, correspond to the ions with the distorted by defects local symmetry of the crystal field.

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Держатели документа:
Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
Institute of Solid State Physics, Vienna University of Technology, Vienna, Austria
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia

Доп.точки доступа:
Kuzmenko, A. M.; Ivanov, V. Yu.; Tikhanovskii A. Yu., A. Yu.; Pimenov, A.; Shuvaev, A.; Gudim, I. A.; Гудим, Ирина Анатольевна; Mukhin, A. A.
}
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11.

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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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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12.

Direct and inverse magnetoelectric effect in orthorhombic single crystals of Dy1−xHoxMnO3 / A. L. Freydman, I. N. Horoshiy, M. I. Kolkov, K. Yu. Terent’ev // Phys. Solid State. - 2022. - Vol. 64, Is. 14. - P. 2347-2352, DOI 10.21883/PSS.2022.14.54338.185. - Cited References: 17. - The study was done with financial support from the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory and the Krasnoyarsk Regional Fund of Science within the scientific project No. 20-42-243008 . - ISSN 1063-7834. - ISSN 1090-6460
Кл.слова (ненормированные):
multiferroics -- magnetoelectric effect -- phase transition -- ferroelectricity
Аннотация: In this work, the magnetoelectric response in a series of Dy1−xHoxMnO3 crystals with substitution x from 0 to 0.4 was investigated. The measurement results showed that, as x increases, a decrease in both the polarization Pa and the magnitude of the susceptibility of the inverse magnetoelectric effect αba is observed. In addition, the field Hb increases, at which the Pc → Pa transition is observed, and the temperature range of the existence of the magnetoelectric response decreases. Thus, an increase in the substitution x suppresses the magnetoelectric effect in this series of compounds. The measurement results also indirectly indicate the prolongation of the Pa state and, consequently, of the magnetic state with a cycloid lying in the ab-plane by an external electric field Ea.

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Публикация на русском языке Прямой и обратный магнитоэлектрический эффект в орторомбических монокристаллах Dy1-xHoxMnO3 [Текст] / А. Л. Фрейдман, И. Н. Хороший, М. И. Колков, К. Ю. Терентьев // Физ. тверд. тела. - 2021. - Т. 63 Вып. 12. - С. 2119-2125

Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia

Доп.точки доступа:
Freydman, A. L.; Фрейдман, Александр Леонидович; Horoshiy, I. N.; Kolkov, M. I.; Колков, Максим Игоревич; Terent'ev, K. Yu.; Терентьев, Константин Юрьевич
}
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13.

Magnetic excitations and exchange interactions in the substituted multiferroics (Nd,Tb)Fe3(BO3)4 revealed by inelastic neutron scattering / I. V. Golosovsky, A. A. Mukhin, V. Skumryev [et al.] // Phys. Rev. B. - 2021. - Vol. 103, Is. 21. - Ст. 214412, DOI 10.1103/PhysRevB.103.214412. - Cited References: 40. - We are very grateful to Dr. A. Ivanov, Dr. D. Aristov, Dr. A. Mirmelstein, and Dr. E. Clementiev for fruitful discussions, which significantly expanded our understanding of the problem. The work was supported by the Russian Foundation for Basic Research (Grant No. 20-02-00109). A.A.M. acknowledges the financial support from the Russian Science Foundation (Grant No. 16-12-10531) . - ISSN 2469-9950. - ISSN 2469-9969

РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
RESONANCE
Аннотация: Inelastic neutron scattering spectra in the antiferromagnetic ferroborates Nd1−xTbxFe3(BO3)4 (x = 0, 0.1, 0.2, and 1) reveal various magnetic excitations of the interacting iron and rare-earth subsystems. We observe an evolution of the magnetic system from “easy-plane”, in the Tb-free (x = 0) case, to “easy-axis” anisotropy for samples substituted with Tb. The spectra show hybridized Fe and Nd branches, which are determined by the Fe-Nd exchange splitting of the ground-state Nd3+ doublet. In the easy-plane configuration, near the Brillouin zone center, there are two different pairs of anticrossing quasiacoustic Fe and Nd modes in contrast to the easy-axis state, where the two corresponding pairs of the branches are degenerated. The high-energy (exchange) branches are similar in both spin configurations. The Ising-type anisotropy of the Tb ion prevents the magnetic moment from precession. The increasing of the Tb content changes the effective magnetic anisotropy and stabilizes the easy-axis state. The spin-wave dispersion in the substituted and pure TbFe3(BO3)4 compounds, which have the same, easy-axis magnetic structure, but different crystal symmetry, strongly differ. The observed spectra were analysed in the frame of linear spin-wave theory and the exchange parameters were determined.

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Держатели документа:
Natl Res Ctr, BP Konstantinov Petersburg Nucl Phys Inst, Kurchatov Inst, Gatchina 188300, Russia.
Russian Acad Sci, 2Prokhorov Gen Phys Inst, Moscow 119991, Russia.
Inst Catalana Recerca & Estudis Avancats ICREA, E-08010 Barcelona, Spain.
Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain.
Inst Laue Langevin, 6 Rue Jules Horowitz,BP 156, F-38042 Grenoble, France.
Univ Grenoble Alpes, CEA, IRIG, MEM MDN, F-38000 Grenoble, France.
RAS, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660038, Russia.

Доп.точки доступа:
Golosovsky, I., V; Mukhin, A. A.; Skumryev, V.; Boehm, M.; Schmidt, W.; Regnault, L-P; Gudim, I. A.; Гудим, Ирина Анатольевна; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-02-00109]; Russian Science FoundationRussian Science Foundation (RSF) [16-12-10531]
}
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14.

X-ray Natural Circular Dichroism imaging of multiferroic crystals / M. S. Platunov, I. A. Gudim, E. N. Ovchinnikova [et al.] // Crystals. - 2021. - Vol. 11, Is. 5. - Ст. 531, DOI 10.3390/cryst11050531. - Cited References: 70. - This research was funded by the Russian Science Foundation (grant 19-72-00002). K.A.K. acknowledges support from the Russian Foundation for Basic Research (project no. 19-52-12029 and project no. 19-02-00483). V.E.D. was partly supported by the Ministry of Science and Higher Education of the Russian Federation within the State assignment FSRC "Crystallography and Photonics" RAS. V.Y.I. and A.A.M. were supported by the Russian Science Foundation [grant 16-12-10531] . - ISSN 2073-4352

РУБ Crystallography + Materials Science, Multidisciplinary
Рубрики:
OPTICAL-ACTIVITY
MAGNETOELASTIC PROPERTIES
SINGLE-CRYSTAL
Кл.слова (ненормированные):
multiferroics -- X-ray optical activity -- twinning -- mapping -- X-ray Natural Circular Dichroism
Аннотация: The polarizing spectroscopy techniques in visible range optics have been used since the beginning of the 20th century to study the anisotropy of crystals based on birefringence and optical activity phenomena. On the other hand, the phenomenon of X-ray optical activity has been demonstrated only relatively recently. It is a selective probe for the element-specific properties of individual atoms in non-centrosymmetric materials. We report the X-ray Natural Circular Dichroism (XNCD) imaging technique which enables spatially resolved mapping of X-ray optical activity in non-centrosymmetric materials. As an example, we present the results of combining micro-focusing X-ray optics with circularly polarized hard X-rays to make a map of enantiomorphous twinning in a multiferroic SmFe3(BO3)4 crystal. Our results demonstrate the utility and potential of polarization-contrast imaging with XNCD as a sensitive technique for multiferroic crystals where the local enantiomorphous properties are especially important. In perspective, this brings a novel high-performance method for the characterization of structural changes associated with phase transitions and identification of the size and spatial distribution of twin domains.

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Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia.
ESRF European Synchrotron, CS 40220, F-38043 Grenoble 9, France.
Hebrew Univ Jerusalem, Rachel & Selim Sch Engn, Dept Appl Phys, IL-9190401 Jerusalem, Israel.
Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia.
RAS, FSRC Crystallog & Photon, AV Shubnikov Inst Crystallog, Moscow 119333, Russia.

Доп.точки доступа:
Platunov, M. S.; Платунов, Михаил Сергеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Ovchinnikova, Elena N.; Kozlovskaya, Ksenia A.; Wilhelm, Fabrice; Rogalev, Andrei; Hen, Amir; Ivanov, Vsevolod Y.; Mukhin, Alexander A.; Dmitrienko, Vladimir E.; Russian Science FoundationRussian Science Foundation (RSF) [19-72-00002, 16-12-10531]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-12029, 19-02-00483]; Ministry of Science and Higher Education of the Russian Federation within the State assignment FSRC "Crystallography and Photonics" RAS
}
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15.

Structural peculiarities of bismuth-containing RFe3(BO3)4 (R = Ho, Y, Sm, Nd) / E. Smirnova, O. Alekseeva, A. Dudka [et al.] // Acta Crystallogr. A. - 2021. - Vol. 77, Supplement. - P. C1237-C1237, DOI 10.1107/S0108767321084749. - Cited References: 4. - This work was performed using the equipment of the Shared Research Center FSRC 'Crystallography and Photonics' RAS and was supported by the Ministry of Science and Higher Education within the State assignment FSRC 'Crystallography and Photonics' RAS . - ISSN 2053-2733

РУБ Chemistry, Multidisciplinary + Crystallography

Кл.слова (ненормированные):
phase transition -- single crystals -- multiferroics -- rare-earth iron borates -- X-ray structure analysis -- EDS spectroscopy -- Mossbauer spectroscopy -- characteristic temperatures

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Держатели документа:
FSRC Crystallog & Photon RAS, Leninskiy Prospekt 59, Moscow 119333, Russia.
RAS, Kirensky Inst Phys, Siberian Branch, Akad Gorodok 50, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Smirnova, E.; Alekseeva, O. A.; Dudka, A. P.; Verin, I. A.; Artemov, V. V.; Артемов Владимир В.; Khmelenin, D. N.; Gudim, I. A.; Гудим, Ирина Анатольевна; Frolov, K. V.; Lyubutin, I. S.; Ministry of Science and Higher Education within the State assignment FSRC 'Crystallography and Photonics' RAS; Congress of the International Union of Crystallography(25 ; 14-22 August 2021 ; Prague, Czech Republic)
}
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16.

Magnetic and magnetoelectric properties of scandoborate NdSc3(BO3)4 / E. V. Eremin, A. A. Dubrovskii, I. A. Gudim [et al.] // Phys. Solid State. - 2021. - Vol. 63, Is. 6. - P. 968-971, DOI 10.1134/S1063783421070052. - Cited References: 15. - This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk krai, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project no. 18-42-240011 "Development of the Flux Techniques for Growing New Scandoborate Single Crystals with a Huntite Structure and Study of the Interaction of Their Magnetic and Electric Subsystems" . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
magnetoelectric effect -- crystal growth -- multiferroics
Аннотация: Trigonal neodymium scandoborate NdSc3(BO3)4 single crystals have been grown by the batch flux method using bismuth trimolybdate and their magnetic and magnetoelectric properties have been investigated in the temperature range of 4.2–300 K in magnetic fields of up to 9 T. Magnetically, the compound is a paramagnet and its properties are determined by the magnetic properties of the Nd3+ ion with allowance for the Van Vleck paramagnetic correction. The magnetoelectric polarization value has been found to be comparable with that of the previously investigated diluted neodymium aluminum borate Nd0.35Y0.65Al3(BO3)4. The latter circumstance opens up another subclass of compounds that should exhibit the giant magnetoelectric effect.

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Публикация на русском языке Магнитные и магнитоэлектрические свойства скандобората NdSc3(BO3)4 [Текст] / Е. В. Еремин, А. А. Дубровский, И. А. Гудим [и др.] // Физ. тверд. тела. - 2021. - Т. 63 Вып. 7. - С. 911-914

Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, 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; Dubrovskii, A. A.; Дубровский, Андрей Александрович; Gudim, I. A.; Гудим, Ирина Анатольевна; Титова, Вероника Романовна; Titova, V. R.; Merkulov, M. V.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk krai; Krasnoyarsk Territorial Foundation [18-42-240011]; Huntite Structure and Study of the Interaction of Their Magnetic and Electric Subsystems
}
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17.

Elastic, magnetoelastic, magnetopiezoelectric, and magnetodielectric characteristics of HoAl3(BO3)4 / I. V. Bilych, M. P. Kolodyazhnaya, K. R. Zhekov [et al.] // Low Temp. Phys. - 2020. - Vol. 46, Is. 9. - P. 923-931, DOI 10.1063/10.0001715. - Cited References: 23 . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied

Кл.слова (ненормированные):
magnetoelectric effects -- piezoelectric effects -- magnetoelastic effects -- multiferroics
Аннотация: The main elastic moduli and piezoelectric modulus have been measured in holmium alumoborate single crystals. The renormalization of the permittivity, piezoresponse, and sound velocities, driven by the nematic-like paramagnetic phase in the sample, is considered. A significant variability of the results is detected, which is caused, presumably, by the fact that, under the action of external fields, the motion trajectory of the nematic-like phase’s director depends on random defects of thermoelastic origin. It is shown that above 5 K, the temperature dependences of the studied parameters are well-described using holmium ion’s known ground multiplet spectrum, formed by the interaction with the crystal field. Changes in the C44-mode velocity in the sub-Kelvin temperature range are measured.

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Публикация на русском языке Упругие, магнитоупругие, магнитопьезоэлектрические и магнитодиэлектрические характеристики HoAl3(BO3)4 [Текст] / И. В. Билыч, М. П. Колодяжная, К. Р. Жеков [и др.] // Физ. низких температур. - 2020. - Т. 46 № 9. - С. 1092-1101

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

Доп.точки доступа:
Bilych, I., V; Kolodyazhnaya, M. P.; Zhekov, K. R.; Zvyagina, G. A.; Fil, V. D.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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18.

Application of DMA 242 C for quasi-static measurements of piezoelectric properties of solids / P. P. Turchin, V. I. Turchin, S. V. Yurkevich [et al.] // J. Sib. Fed. Univ. Math. Phys. - 2020. - Vol. 13, Is. 1. - P. 97-103 ; Журн. СФУ. Матем. и физика, DOI 10.17516/1997-1397-2020-13-1-97-103. - Cited References: 26. - The reported study was funded by Russian Foundation for Basic Research project no. 18-42-240016, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, to the research project: "Electromechanical Properties and Anisotropy of Acoustic Wave Propagation in Yttrium Aluminoborates Single Crystals" . - ISSN 1997-1397
Кл.слова (ненормированные):
Piezoelectric modules -- Quasistatic method -- Multiferroics
Аннотация: An experimental device for quasi-static measurements of piezoelectric moduli dijk, based on the possibilities of precision variations in mechanical stresses with the device DMA 242 C in the frequency range 0-100 Hz has been developed. A special sample holder and a charge amplifier are used in the measuring scheme. The measurements of piezoelectric moduli values of trigonal piezoelectric single crystalls La3Ga5SiO14 (P321) and YAl3(BO3)4 (R32), as well as hexagonal ZnO (P63mc) have been carried out.

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Держатели документа:
Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Turchin, P. P.; Турчин, Павел Петрович; Turchin, V. I.; Yurkevich, S. V.; Sukhodaev, P. O.; Raikova, I. S.

}
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19.

Втюрин, Александр Николаевич.

    Фазовые переходы в кристаллах мультиферроиков со структурой хантита, содержащих ионы редкоземельных элементов - исследования методом комбинационного рассеяния света / А. С. Крылов, Е. М. Мошкина, И. А. Гудим [и др.] // Международная онлайн-конференция "Исследование сегнетоэлектрических материалов российскими учеными. Столетие открытия сегнетоэлектричества" (СЭ-100) : сб. тезисов / чл. прогр. ком. А. Н. Втюрин. - 2020. - Ст. П17. - С. 26-27. - Cited References: 7 . - ISBN 978-5-9500624-3-8
   Перевод заглавия: Phase transitions in multiferroics with huntite structure containing rare earth elements - Raman spectroscopy study
Аннотация: Изучены эффекты, связанные с параметрами структурного порядка и магнитного упорядочения при фазовых переходах в спектрах комбинационного рассеяния света монокристаллов и твердых растворов кристаллов (Hо-Nd)Fe3(BO3)4, (Sm-La)Fe3(BO3)4, Hо(Fe-Ga)3(BO3)4, Tb(Fe-Ga)3(BO3)4 и Nb(Fe-Ga)3(BO3)4.

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Втюрин, Александр Николаевич \чл. прогр. ком.\; Vtyurin, A. N.; Крылов, Александр Сергеевич; Krylov, A. S.; Мошкина, Евгения Михайловна; Moshkina, E. M.; Гудим, Ирина Анатольевна; Gudim, I. A.; Крылова, Светлана Николаевна; Krylova, S. N.; Исследование сегнетоэлектрических материалов российскими учеными. Столетие открытия сегнетоэлектричества, международная онлайн-конференция(2020 ; 14-19 сент. ; Екатеринбург); Уральский Федеральный университет им. Первого Президента России Б.Н. Ельцина
}
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20.

Investigation of phase transitions in multiferroics HоFe3-xGax(BO3)4 and TbFe3-xGax(BO3)4 solid solution with huntite structure / Yu. V. Krylov [et al.] // 3th Int. Conf. "Scanning Probe Microscopy". 4th Russia-China Workshop on Dielectric and Ferroel. Mater. (SPM-2019-RCWDFM). Int. Youth Conf. "Functional Imaging of Nanomaterials" : Abstract book of joint int. conf. - 2019. - P. 38 . - ISBN 978-5-9500624-2-1

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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RAS, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Moshkina, E. M.; Мошкина, Евгения Михайловна; Gudim, I. A.; Гудим, Ирина Анатольевна; Krylova, S. N.; Крылова, Светлана Николаевна; Vtyurin, A. N.; Втюрин, Александр Николаевич; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Scanning Probe Microscopy, International Conference(3 ; 2019 ; Aug. ; 25-28 ; Ekaterinburg); Russia-China Workshop on Dielectric and Ferroelectric Materials(4 ; 2019 ; Aug. ; 25-28 ; Ekaterinburg); "Functional Imaging of Nanomaterials", International Youth Conference(2019 ; Aug. ; 25-28 ; Ekaterinburg)
}
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