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Andryushin, N. D.
Lattice dynamics in improper ferroelectric YGaO3 / N. D. Andryushin, M. S. Pavlovskiy, V. I. Zinenko // Ferroelectrics. - 2020. - Vol. 567, Is. 1 : Special Issue in Honor of Professor Stanislav A. Grindev on the Occasion of His 83rd Birthday. - P. 28-36, DOI 10.1080/00150193.2020.1791584. - Cited References: 19. - This study was supported by the Russian Foundation for Basic Research and Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund by project No. 18-02-00130 . - ISSN 0015-0193
Кл.слова (ненормированные):
YGaO3 -- lattice dynamics -- phase transition -- improper ferroelectric
Аннотация: The structural phase transition P63/mmc → P63cm in hexagonal YGaO3 crystal is studied by first-principles methods. From lattice dynamics calculations it was obtained that the mechanism of transition into polar phase is similar to the one in isostructural YMnO3 crystal. As a result of calculations the improper ferroelectricity and electrical polarization were revealed in YGaO3.

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

Доп.точки доступа:
Pavlovskiy, M. S.; Павловский, Максим Сергеевич; Zinenko, V. I.; Зиненко, Виктор Иванович; Андрюшин, Никита Дмитриевич
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Andryushin, N. D.
Pressure induced ferroelectric phase transition in GdFe3(BO3)4 / N. D. Andryushin, M. S. Pavlovski, V. I. Zinenko // Joint 14th Rus./CIS/Baltic/Japan Symp. on Ferroelectricity (RCBJSF)/ Young sci. school on the spect. studies of critical dynamics at struct. phase trans. : Abstract book / org. comm. A. N. Vtyurin ; progr. comm. I. N. Flerov. - 2018. - P. 92. - Cited References: . - ISBN 978-5-9651-1144-2

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Доп.точки доступа:
Vtyurin, A. N. \org. comm.\; Втюрин, Александр Николаевич; Flerov, I. N. \progr. comm.\; Флёров, Игорь Николаевич; Pavlovski, M. S.; Павловский, Максим Сергеевич; Zinenko, V. I.; Зиненко, Виктор Иванович; Joint Russia/CIS/Baltic/Japan Symposium on Ferroelectricity(14 ; May 14-18, 2018 ; St. Perersburg); Young scientists school on the spectroscopic(May 14-18, 2018 ; St. Perersburg); Физико-технический институт им. А.Ф. Иоффе РАН; Санкт-Петербургский политехнический университет им. Петра Великого
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Calculation and Comparison of Electronic, Vibrational, Polarization, and Magnetic Properties of Double Perovskites CaMnTi2O6 and CaFeTi2O6 / N. D. Andryushin, V. I. Zinenko, M. S. Pavlovskii, A. S. Shinkorenko // J. Exp. Theor. Phys. - 2019. - Vol. 129, Is. 6. - P. 1036-1044, DOI 10.1134/S1063776119110013. - Cited References: 18. - This work was supported by the Russian Foundation for Basic Research (project no. 18-02-00130-a) . - ISSN 1063-7761
Кл.слова (ненормированные):
Antiferromagnetism -- Crystal lattices -- Density functional theory -- Electronic properties -- Ferroelectricity -- Ground state -- Iron compounds -- Perovskite -- Spin polarization
Аннотация: Vibrational, polarization, magnetic, and electronic properties of double perovskites CaMnTi2O6 and CaFeTi2O6 with a rare type of “column” ordering of divalent metal cations have been calculated based on the density functional theory. Analysis of the crystal lattice dynamics for paraelectric phase P42/nmc of both compounds has revealed that ferroelectric instability exists only in CaMnTi2O6. It is found that the structure distortion of the paraphrase of CaMnTi2O6 in the eigenvector of the unstable polar mode leads to a structure with the P42/nmc space group. The calculated spontaneous polarization for the ferroelectric phase of CaMnTi2O6 is Ps = 25 μC/cm2. The spin-polarization calculations have shown that the ground state is ferromagnetic in the CaFeTi2O6 crystal and antiferromagnetic in the CaMnTi2O6 crystal. The exchange interaction constants have been calculated using the Heisenberg model and the mean field approximation; the phase transition temperature for each compound has been estimated.

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Публикация на русском языке Расчет и сравнение электронных, колебательных, поляризационных и магнитных свойств двойных перовскитов CaMnTi2O6 и CaFeTi2O6 [Текст] / Н. Д. Андрюшин [и др.] // Журн. эксперим. и теор. физ. - 2019. - Т. 156 Вып. 6. - С. 1137-1146

Держатели документа:
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center,” Siberian Branch,Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Andryushin, N. D.; Андрюшин, Никита Дмитриевич; Zinenko, V. I.; Зиненко, Виктор Иванович; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Shinkorenko, A. S.; Шинкоренко, Алексей Сергеевич
}
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    Concentration transition in Cu2(Mn,Ga)BO5 solid solutions / E. Moshkina, E. Eremin, A. Veligzhanin [et al.] // J. Magn. Magn. Mater. - 2023. - Vol. 584. - Ст. 171072, DOI 10.1016/j.jmmm.2023.171072. - Cited References: 27 . - ISSN 0304-8853. - ISSN 1873-4766
Кл.слова (ненормированные):
Ludwigite -- Solid solution -- Magnetic phase transition -- Spin glass state
Аннотация: The effects related to the conversion of magnetic structures of a Cu2MnBO5 ferrimagnet to a Cu2GaBO5 antiferromagnet under the Mn3+ → Ga3+ substitution were studied. The properties of four single crystal samples with the gallium concentration x  = 0.04, 0.11, 0.17, 0.25 were examined. The chemical composition and valence state of the samples were determined by X-ray absorption spectroscopy element-sensitive technique. Distribution of the 3d metal ions over crystallographic positions was studied using the first principle calculations by Wien2k program. The evolution of the magnetic properties was investigated by the measurements of the temperature and field dependences of magnetization, dc and ac magnetic susceptibility. In agreement with the previous study of the structure evolution of Cu2Mn1-xGaxBO5 solid solutions, the critical concentration upon a change in the magnetic ordering type was found in the range x  = 0.17–0.25. The non-monotonic behavior of magnetization in terms of the gallium content was found in the concentration range of 0.04–0.17. A complex pattern of magnetic phase transitions belonging to the concentration phase boundary was obtained in the compounds with gallium being within the range x  = 0.17–0.25. One could observe the splitting of the peaks of the real part of ac-susceptibility of the high-temperature phase transition in the Cu2MnBO5-like phase (x = 0.04, 0.11) and that of the low-temperature one at the concentration boundary (x = 0.17, 0.25) with different frequency and orientational dependence. The type and origin of the multiple phase transitions observed in the studied samples were analyzed.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Siberian State University of Science and Technologies, Krasnoyarsk 660037, Russia
National Research Centre “Kurchatov Institute”, Moscow 123182, Russia

Доп.точки доступа:
Moshkina, E. M.; Мошкина, Евгения Михайловна; Eremin, E. V.; Еремин, Евгений Владимирович; Veligzhanin, Alexey; Pavlovskiy, M. S.; Павловский, Максим Сергеевич; Sofronova, S. N.; Софронова, Светлана Николаевна; Titova, Veronika; Титова, Вероника Романовна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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Concentrational transition in Cu2(Mn,Ga)BO5 solid solutions / E. V. Eremin, M. S. Molokeev, A. A. Veligzhanin [et al.] // VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022) : Book of abstracts / program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 2, Sect. G : Frustrated and disordered magnetism. - Ст. G.O1. - P. 2-3. - Cited References: 4. - The study was supported by the Russian Science Foundation (grant No. 21-72-00130) . - ISBN 978-5-94469-051-7

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Siberian State University of Science and Technologies, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia
National Research Centre “Kurchatov Institute”, Moscow, Russia

Доп.точки доступа:
Eremin, E. V.; Еремин, Евгений Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Veligzhanin, A. A.; Pavlovsky, M. S.; Павловский, Максим Сергеевич; Kuchesheva-Titova, V. R.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Moshkina, E. M.; Мошкина, Евгения Михайловна; Российская академия наук; Физико-технический институт им. Е.К. Завойского ФИЦ Казанского научного центра РАН; Казанский (Приволжский) федеральный университет; Euro-Asian Symposium "Trends in MAGnetism"(8 ; 2022 ; Aug. ; 22-26 ; Kazan); "Trends in MAGnetism", Euro-Asian Symposium(8 ; 2022 ; Aug. ; 22-26 ; Kazan)
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    Exprerimental and theoretical study of the cation and magnetic ordering in NixCo3-xB2O6 / S. N. Sofronova, M. S. Pavlovskii, A. Chernyshov [et al.] // Book of abstacts of Samarkand International Symposium on Magnetism (SISM-2023) / int. adv. com. S. G. Ovchinnikov [et al.]. - 2023. - Ст. 2PO-L4-21. - P. 119. - Cited References: 3. - РНФ № 23-12-20012 ; Красноярский регион. фонд науки . - ISBN 978-5-00202-320-2
   Перевод заглавия: Теоретическое и экспериментальное исследование катионного и магнитного упорядочения в NixCo3-xB2O6

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Держатели документа:
L.V. Kirensky Institute of Physics SB RAS

Доп.точки доступа:
Ovchinnikov, S. G. \int. adv. com.\; Овчинников, Сергей Геннадьевич; Sofronova, S. N.; Софронова, Светлана Николаевна; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Chernyshov, A.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Samarkand International Symposium on Magnetism(2023 ; July 2-6 ; Samarkand); Samarkand State University
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Features of the melt–solution synthesis of the TbCr3(BO3)4 single crystals / I. A. Gudim, N. V. Mikhashenok, A. D. Vasiliev [et al.] // J. Cryst. Growth. - 2024. - Vol. 637-638. - Ст. 127716, DOI 10.1016/j.jcrysgro.2024.127716. - Cited References: 22. - The authors thank A.V. Zamkov for assistance in preparing the samples for the conoscopic study. The characterization and examination of the samples were performed at the Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences. - This study was supported in part by the Russian Science Foundation and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activity, project no. 22-12-20019 . - ISSN 0022-0248. - ISSN 1873-5002
Кл.слова (ненормированные):
Growth from melt-solution -- Single crystal growth -- Cromium borates -- Rare-earth compounds -- Oxides -- Magnetic materials
Аннотация: The phase formation of terbium chromoborate TbCr3(BO3)4 in the bismuth trimolybdate and lithium tungstate melt–solutions has been studied. The absence of the terbium chromoborate trigonal phase in the bismuth trimolybdate-based system at all component ratios has been shown. The component ratio in the lithium tungstate-based system has been found at which the TbCr3(BO3)4 trigonal crystals are formed at temperatures above 1100 °C; below this temperature, the monoclinic phase dominates. The structural and magnetic properties of the grown crystals have been studied. It has been established that the trigonal and monoclinic TbCr3(BO3)4 crystals synthesized from the lithium tungstate-based solvent exhibit identical magnetic properties. At the same time, a significant difference of the magnetic properties of the single crystals synthesized from the bismuth molybdate melt–solution has been observed. This difference has been attributed to the effect of Bi3+ ions that partially replace Tb3+ ions.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036 Russia

Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Melnikova, S. V.; Мельникова, Светлана Владимировна; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Skorobogatov, S. A.; Скоробогатов, Станислав Алексеевич; Pankrats, A. I.; Панкрац, Анатолий Иванович
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Ferroelectric and structural instability in double perovskites Me1+Bi3+Me3+Nb5+O6 (Me1+ = Na, K, Rb; Me3+ = Sc, Ga, In, Lu) / V. I. Zinenko [et al.] // J. Exp. Theor. Phys. - 2012. - Vol. 114, Is. 6. - P. 955-962, DOI 10.1134/S1063776112040188. - Cited References: 7. - This work was supported by the Russian Foundation for Basic Research (project no. 09-02-00067) and by the program for the support of leading scientific schools (project no. NSh-4645.2010.2). . - ISSN 1063-7761

РУБ Physics, Multidisciplinary

Аннотация: Within the Gordon-Kim generalized model with regard to the polarizabilities of ions, the lattice constants, the high-frequency permittivity, the Born dynamic charges, and the vibration constants of the crystal lattice are calculated for cation-ordered double perovskites Me1+Bi3+Me3+Nb5+O6. The vibration spectra of all the compounds exhibit two types of instabilities: instability associated with the rotation of the oxygen octahedron and ferroelectric instability. Various combinations of distortions with respect to the rotation mode yield five energetically most favorable distorted phases. The symmetry and the energy characteristics of these phases are discussed. In four of the five phases, the distortions associated with the oxygen octahedron rotation lead to polar phases, thus allowing one to speak of improper ferroelectricity in these compounds. One phase turns out to be nonpolar; however, it contains unstable polar modes such that a displacement along the eigenvectors of these modes gives rise to polarization in the crystal.

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Публикация на русском языке Сегнетоэлектрическая и структурная неустойчивости в двойных перовскитах Me1+Bi3+Me3+Nb5+O6 (Me1+ = Na, K, Rb; Me3+ = Sc, Ga, In, Lu) [Текст] / В. И. Зиненко [и др.] // Ж. эксперим. и теор. физ. : Наука, 2012. - Т. 141 Вып. 6. - С. 1093-1101

Держатели документа:
[Zinenko, V. I.
Zamkova, N. G.
Zhandun, V. S.
Pavlovskii, M. S.] Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Zamkova, N. G.; Замкова, Наталья Геннадьевна; Zhandun, V. S.; Жандун, Вячеслав Сергеевич; Pavlovskii, M. S.; Павловский, Максим Сергеевич
}
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First-principles calculations of structural and magnetic properties of CaFeTi2O6 and CaMnTi2O6 / N. D. Andryushin, V. I. Zinenko, M. S. Pavlovskiy, A. S. Shinkorenko // 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. K.P21. - P. 355. - Cited References: 4 . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Siberian Federal University, 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; Andryushin, N. D.; Zinenko, V. I.; Зиненко, Виктор Иванович; Pavlovskiy, M. S.; Павловский, Максим Сергеевич; Shinkorenko, A. S.; Шинкоренко, Алексей Сергеевич; 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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10.

    Gallium composition-dependent structural phase transitions in HoFe3-xGax(BO3)4 solid solutions: crystal growth, structure, and Raman spectroscopy study / E. Moshkina, S. Krylova, I. Gudim [et al.] // Cryst. Growth Des. - 2020. - Vol. 20, Is. 2. - P. 1058-1069, DOI 10.1021/acs.cgd.9b01387. - Cited References: 30. - The reported study was funded by the Russian Foundation for Basic Research No. 18-02-00754. The experiments were performed using equipment of Center for Common Use, Krasnoyarsk Scientific Center, FSC SB RAS . - ISSN 1528-7483
   Перевод заглавия: Структурные фазовые переходы по концентрации галлия в твердых растворах HoFe3-xGax(BO3)4: рост кристаллов, структура и комбинационное рассеяние
Кл.слова (ненормированные):
Crystal growth -- Crystal structure -- Density functional theory -- Gallium -- Gallium compounds -- Iron compounds -- Raman scattering -- Solid solutions -- X ray powder diffraction
Аннотация: Single crystals of solid solutions of HoFe3–xGax(BO3)4 with x = 0, 0.5, 1, 1.5, and 3 were obtained using flux synthesis. The conditions of the synthesis are described in detail. The structural properties of each of the synthesized samples were studied using X-ray powder diffraction analysis at several temperature points (303, 403, and 503 K). The structural parameters of the obtained samples and the “pure” compounds HoFe3(BO3)4 and HoGa3(BO3)4 were compared. The Raman spectra of the obtained solid solutions HoFe3–xGax(BO3)4 were studied in a wide temperature range (T = 10–400 K). The vibrational spectra and eigenvectors of the HoFe3Ga(BO3)4 and HoGa3(BO3)4 in R32 phase and HoFe3Ga(BO3)4 in P3121 phase were calculated within density functional theory. The features of the Raman spectra of HoFe2Ga(BO3)4, HoFe2.5Ga0.5(BO3)4, HoFe3(BO3)4 crystals associated with the R32 → P3121 structural phase transition, which have a strong dependence on the degree of substitution x, were investigated. Peculiarities of the Raman spectra, which are associated with magnetic ordering in HoFe1.5Ga1.5(BO3)4, HoFe2Ga(BO3)4, and HoFe2.5Ga0.5(BO3)4 crystals, were detected.

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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, 660014, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation

Доп.точки доступа:
Moshkina, E. M.; Мошкина, Евгения Михайловна; Krylova, S. N.; Крылова, Светлана Николаевна; Gudim, I. A.; Гудим, Ирина Анатольевна; Molokeev, M. S.; Молокеев, Максим Сергеевич; Temerov, V. L.; Темеров, Владислав Леонидович; Pavlovskiy, M. S.; Павловский, Максим Сергеевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Krylov, A. S.; Крылов, Александр Сергеевич
}
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