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    Magnetism in spin crossover systems: Short-range order and effects beyond the Heisenberg model / V. I. Kuz'min [et al.] // Phys. Rev. B. - 2019. - Vol. 100, Is. 14. - Ст. 144429, DOI 10.1103/PhysRevB.100.144429. - Cited References: 72. - The authors thank the Russian Scientific Foundation for the financial support under Grant No. 18-12-00022. . - ISSN 2469-9950. - ISSN 2469-9969
   Перевод заглавия: Магнетизм в системах со спиновыми кроссоверами: ближний порядок и эффекты за пределами модели Гейзенберга

РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
LOWER-MANTLE
   STATE
   TRANSITION
   PRESSURE
   IRON
   SUSCEPTIBILITY
Аннотация: To study non-Heisenberg effects in the vicinity of spin crossover in strongly correlated electron systems we derive an effective low-energy Hamiltonian for the two-band Kanamori model. It contains a Heisenberg high-spin term proportional to exchange constant as well as a low-spin term proportional to spin gap parameter ɛs. Using cluster mean field theory we obtain several non-Heisenberg effects. Near the critical value of spin gap ɛcs there is a magnetic phase transition of first order. In the vicinity of ɛcs in the paramagnetic phase we observe nontrivial behavior of the Curie constant in the paramagnetic susceptibility in the wide range of temperature. Reentrant temperature behavior of nearest-neighbor spin-spin correlations is observed at ɛsɛcs. Finally, the pressure-temperature magnetic phase diagram for ferroperriclase is obtained using the effective Hamiltonian.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Sukhachov Inst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kuz'min, V. I.; Кузьмин, Валерий Ипполитович; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Zarubin, A. E.; Ovchinnikova, T. M.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Scientific FoundationRussian Science Foundation (RSF) [18-12-00022]
}
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    Effect of electric field on magnetization and magnetic susceptibility in rare-earth ferroborite multiferroics / A. A. Mukhin [et al.] // 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.O8. - P. 312-313. - Cited References: 3. - This work was supported by the Russian Science Foundation (project 16-12-10531) . - ISBN 978-5-9500855-7-4
   Перевод заглавия: Влияние электрического поляна намагниченность и магнитную восприимчивость редкоземельных мультиферроичных ферроборатов

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Prokhorov General Physics Institute of RAS, Moscow, 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; Mukhin, A. A.; Ivanov, V. Yu.; Tikhanovskii, A. Yu.; Gudim, I. A.; Гудим, Ирина Анатольевна; 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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Magnetoimpedance, Jahn-Teller transitions upon electron doping of manganese sulfide / S. S. Aplesnin, M. N. Sitnikov, A. M. Kharkov [et al.] // J. Magn. Magn. Mater. - 2020. - Vol. 513. - Ст. 167104, DOI 10.1016/j.jmmm.2020.167104. - Cited References: 42. - This study was supported by youth project_Reshetnev Siberian State University of Science and Technology . - ISSN 0304-8853
Кл.слова (ненормированные):
Impedance -- Prehistory of magnetic susceptibility -- Magnetoimpedance -- Fermi glass -- Orbital magnetic moment -- Electron paramagnetic resonance -- IR spectra -- JT transitions -- Conductivity
Аннотация: The effect of a magnetic field on the electrical and magnetic properties of manganese sulfide upon electron doping in the YbxMn1−xS (0.05 ˂ x ˂ 0.2) compound has been investigated. The change in the conductivity type from the Poole–Frenkel to Mott law have been established using the I–V characteristics and the change in the carrier type upon temperature and concentration variations has been observed. The effect of the sample prehistory on the conductivity, impedance, and magnetic susceptibility under the action of a magnetic field in a wide temperature range has been found. The trivalent state of ytterbium ions has been determined using the electron paramagnetic resonance study. The dynamic JT transitions temperature are found by IR method and by the electron paramagnetic resonance. Anomalies of carrier mobility and magneto-impedance were found in the vicinity of the Jahn-Teller transitions. The experimental data are explained by the localization of electrons with the formation of the interstitial orbital momenta and an orbital momentum into the site. The sample prehistory is related to the lifting of the orbital angular moments degeneracy and the direction of the axis of distortion of the octahedrons in a magnetic field.

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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Kharkov, A. M.; Konovalov, S. O.; Vorotinov, A. M.; Воротынов, Александр Михайлович
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Investigation of the Magnetic Properties of Warwickite Mn0.89Mg1.11BO4 / R. M. Eremina [et al.] // Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 7. - P. 792-794, DOI 10.3103/S106287381907013X. - Cited References: 3. - This work was supported by the Russian Foundation for Basic Research; the Administration of Krasnoyarsk Krai; and the Krasnoyarsk Krai Science Foundation, project no. 18-42-243007. . - ISSN 1062-8738
Кл.слова (ненормированные):
Antiferromagnetism -- Electron spin resonance spectroscopy -- Magnetic susceptibility -- Manganese compounds -- Single crystals -- Temperature distribution
Аннотация: The temperature dependences of the magnetic susceptibility in magnetic fields applied parallel and perpendicular to axis с of a Mn0.89Mg1.11BO4 single crystal were measured. Spin ordering typical of an antiferromagnetic with an easy magnetization axis was observed below 16 K. The Dzyaloshinskii–Moriya interaction between spins of manganese ions in Mn0.89Mg1.11BO4 was estimated by analyzing the EPR linewidth. © 2019, Allerton Press, Inc.

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Публикация на русском языке

Держатели документа:
Zavoisky Physical-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, Kazan, 420029, Russian Federation
Kazan Federal University, Kazan, 420008, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Eremina, R. M.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Gavrilova, T. P.; Muftakhutdinov, A. R.; Gilmutdinov, I. F.
}
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Investigation of the Magnetic Properties of Ludwigites / R. M. Eremina [et al.] // Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 7. - P. 912-914, DOI 10.3103/S1062873819070141. - Cited References: 6. - This work was supported by the Russian Foundation for Basic Research, project no. 17-02-00953. . - ISSN 1062-8738
Кл.слова (ненормированные):
Aluminum compounds -- Copper compounds -- Gallium compounds -- Magnetic susceptibility -- Metal ions -- Single crystals -- Temperature distribution -- X ray powder diffraction
Аннотация: Single crystals of Cu2AlBO5 and Cu2GaBO5 copper oxyborates are synthesized via solution-melt crystallization and subjected to X-ray diffraction analysis. Parameters of the crystal lattice and the positions of atoms in a unit cell are determined. Copper ions form a structural chain along axis а in Cu2AlBO5 and Cu2GaBO5. Temperature dependences of the magnetic susceptibility are measured. The obtained curves feature kinks at Т = 2.4 (Cu2AlBO5) and 4.1 K (Cu2GaBO5). © 2019, Allerton Press, Inc.

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Публикация на русском языке Исследование магнитных свойств людвигитов [Текст] / Р. М. Еремина [и др.] // Изв. РАН. Сер. физич. - 2019. - Т. 83 № 7. - С. 999-1002

Держатели документа:
Zavoisky Physical-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, Kazan, 420029, Russian Federation
Kazan Federal University, Kazan, 420008, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Eremina, R. M.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Gavrilova, T. P.; Gilmutdinov, I. F.; Sofronova, S. N.; Софронова, Светлана Николаевна; Kiiamov, A. G.
}
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Size effects in the formation of an uncompensated ferromagnetic moment in NiO nanoparticles / S. I. Popkov [et al.] // J. Appl. Phys. - 2019. - Vol. 126, Is. 10. - Ст. 103904, DOI 10.1063/1.5109054. - Cited References: 54. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation and by the Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, and Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project: "Magnetic Reversal of Magnetic Nanoparticles in Strong Pulsed Magnetic Fields-A New Approach to the Study of Dynamic Effects Associated with the Magnetization of Magnetic Nanoparticles," Project No. 18-42-240012. . - ISSN 0021-8979. - ISSN 1089-7550

РУБ Physics, Applied
Рубрики:
MAGNETIC-PROPERTIES
   TEMPERATURE
   SUSCEPTIBILITY
   NANOFERRIHYDRITE
Аннотация: The magnetic properties of samples of NiO nanoparticles with average sizes of 23, 8.5, and 4.5 nm were investigated. Using the magnetization curves measured in strong (up to 250 kOe) pulsed magnetic fields, the contributions of the free spin and ferromagnetic subsystems were extracted. It has been found that the ferromagnetic contribution increases with a decrease in the nanoparticle size and is proportional to the fraction of uncompensated exchange-coupled spins. It is demonstrated that the uncompensated spins form in the antiferromagnetic NiO oxide due to an increase in the fraction of surface atoms in the nanoparticles with decreasing particle size and defects in the bulk of particles.

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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia.

Доп.точки доступа:
Popkov, S. I.; Попков, Сергей Иванович; Krasikov, A. A.; Красиков, Александр Александрович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Volochaev, M. N.; Волочаев, Михаил Николаевич; Kirillov, V. L.; Martyanov, O. N.; Balaev, A. D.; Балаев, Александр Дмитриевич; Ministry of Science and Higher Education of the Russian Federation; Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory [18-42-240012]; Krasnoyarsk Territorial Foundation [18-42-240012]
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Thermodynamic properties of vanadium oxypentafluoride (IV) (NH4)3VOF5 / E. V. Bogdanov, E. I. Pogoreltsev, A. V. Kartashev [et al.] // Phys. Solid State. - 2020. - Vol. 62, Is. 7. - P. 1271-1279, DOI 10.1134/S1063783420070057. - Cited References: 17. - This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activity, project no. 18-42-243003 “Effect of Deuteration on Orientational Ordering and Phase Transitions in Ammonium Fluorine-Oxygen Vanadates” . - ISSN 1063-7834
Кл.слова (ненормированные):
oxyfluorides -- phase transitions -- specific heat -- birefringence -- thermal expansion -- pressure susceptibility
Аннотация: The (NH4)3VOF5 crystals have been synthesized and their homogeneity and single-phase structure has been established by the X-ray diffraction, energy dispersive spectroscopy, and X-ray photoelectron spectroscopy studies. The investigations of the temperature dependences of specific heat, entropy, strain, and pressure susceptibility show the occurrence of three phase transitions caused by the structural transformations in the (NH4)3VOF5 crystals. The T–p phase diagram shows the temperature limits of stability of the crystalline phases implemented in (NH4)3VOF5. The optical and dielectric studies disclose the ferroelastic nature of the phase transitions. An analysis of the experimental data together with the data on the isostructural (NH4)3VO2F4 crystal makes it possible to distinguish the physical properties of oxyfluorides containing vanadium of different valences (IV and V).

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Публикация на русском языке Термодинамические свойства оксипентафторида ванадия (IV), (NH4)3VOF5 [Текст] / Е. В. Богданов, Е. И. Погорельцев, А. В. Карташев [и др.] // Физ. тверд. тела. - 2020. - Т. 62 Вып. 7. - С. 1123-1131

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Agrarian University, Institute of Engineering Systems and Power, Krasnoyarsk, 660049, Russian Federation
Siberian Federal University, Institute of Engineering Physics and Radio Electronics, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690022, Russian Federation

Доп.точки доступа:
Bogdanov, E. V.; Богданов, Евгений Витальевич; Pogoreltsev, E. I.; Погорельцев, Евгений Ильич; Kartashev, A. V.; Карташев, Андрей Васильевич; Gorev, M. V.; Горев, Михаил Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Mel'nikova, S. V.; Мельникова, Светлана Владимировна; Flerov, I. N.; Флёров, Игорь Николаевич; Laptash, N. M.
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High-resolution optical spectroscopy, magnetic properties, and single-crystal neutron diffraction of multiferroic HoFe3(BO3)4: Magnetic structure / M. N. Popova, E. P. Chukalina, D. A. Erofeev [et al.] // Phys. Rev. B. - 2021. - Vol. 103, Is. 9. - Ст. 094411, DOI 10.1103/PhysRevB.103.094411. - Cited References: 65. - Financial support of the Russian Science Foundation under Grant No. 19-12-00413 is acknowledged. I.V.G. acknowledges financial support of the neutron scattering studies from the Russian Foundation for Basic Research under Grant No. 20-02-00109. The analysis of the measured neutron diffraction data was performed by A.A.M. with support of the Russian Science Foundation under Grant No. 16-12-10531 . - ISSN 2469-9950
Кл.слова (ненормированные):
Antiferromagnetic structures -- Elastic neutron scattering -- High-resolution spectroscopy -- Magnetic susceptibility tensors -- Magnetoelectric properties -- Neutron diffraction measurements -- Single-crystal neutron diffraction -- Temperature dependencies
Аннотация: The magnetic structure is usually determined by the neutron diffraction measurements. However, in the case of complex multisublattice magnetics, this method fails to give an unambiguous result. Here, on the example of multiferroic HoFe3(BO3)4, we show that in the case of rare-earth (RE) compounds the right magnetic structure can be determined by additionally using optical spectroscopy and a theoretical analysis based on spectroscopic data. HoFe3(BO3)4 demonstrates a series of phase transitions and interesting magnetic and magnetoelectric properties. The available information on the magnetic structure of the compound, necessary for understanding and utilizing these properties, is contradictory. To resolve the existing ambiguities, we apply a combined approach. The high-resolution spectroscopy data deliver a set of the Ho3+ crystal-field (CF) levels in the paramagnetic and both easy-plane and easy-axis magnetic phases. These data are used to determine CF and Ho3+-Fe3+ exchange parameters and, then, to calculate the temperature dependencies of the magnetic susceptibility tensor of HoFe3(BO3)4. Based on these calculations, we suggest an easy-plane antiferromagnetic structure with a collinear arrangement of the Fe spins along the a axis and induced noncolinear moments of magnetically nonequivalent Ho ions. The suggested structure is further confirmed by single-crystal elastic neutron scattering experiments. We argue that specific features of the magnetic properties of RE iron borates isostructural to HoFe3(BO3)4 are governed by the energy patterns and the symmetry properties of the wave functions of the lower CF levels of the RE ground multiplet in the crystal field of the C2 symmetry.

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Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, Moscow, Troitsk, 108840, Russian Federation
L. V. Kirensky Institute of Physics, Siberian Branch of Ras, Krasnoyarsk, 660036, Russian Federation
National Research Center "kurchatov Institute", B.P. Konstantinov Petersburg Nuclear Physics Institute, Gatchina, 188300, Russian Federation
Laboratoire Leon Brillouin, CEA-CNRS, CE-Saclay, Gif-sur-Yvette, 91191, France
Prokhorov General Physics Institute, Ras, Moscow, 119991, Russian Federation
Kazan Federal University, Kazan, 420008, Russian Federation

Доп.точки доступа:
Popova, M. N.; Chukalina, E. P.; Erofeev, D. A.; Gudim, I. A.; Гудим, Ирина Анатольевна; Golosovsky, I. V.; Gukasov, A.; Mukhin, A. A.; Malkin, B. Z.
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Spin state crossover in Co3BO5 / N. V. Kazak, M. S. Platunov, Y. V. Knyazev [et al.] // Phys. Rev. B. - 2021. - Vol. 103, Is. 9. - Ст. 094445, DOI 10.1103/PhysRevB.103.094445. - Cited References: 71. - We acknowledge many inspirational discussions on the topic of this paper with the late Natalia Ivanova and Leonard Bezmaternykh. The authors acknowledge A. Ney for allowing us to use the XANES spectrum of film. We are grateful to the Russian Foundation for Basic Research (Project No. 20-02-00559) and President Council on Grants (Project No. МК-2339.2020.2) for supporting this paper. This paper was carried out within the state assignment of the Russian Ministry of Science and High Education via program “Quantum”' (No. AAAA-A18-118020190095-4). We also acknowledge support by Russian Ministry of Education and Science via Contract No. 02.A03.21.0006. We acknowledge financial support from the Spanish Ministry of Economy, Industry and Competitiveness (MINECO, Grant No. MAT2017-83468-R) and from the regional Government of Aragon (E12-20R RASMIA project) . - ISSN 2469-9950
Кл.слова (ненормированные):
Carbon dioxide -- Crystal structure -- Dichroism -- Energy gap -- Hydraulic structures -- Ions -- Iron compounds -- Magnetic moments -- Magnetic susceptibility -- Single crystals -- DC magnetic susceptibility -- Effective magnetic moments -- Electronic configuration -- Generalized gradient approximations -- Magnetic sublattices -- Octahedral environment -- Paramagnetic susceptibility -- X-ray magnetic circular dichroism -- Cobalt
Аннотация: We have investigated the spin and oxidation states of Co in Co3BO5 using x-ray magnetic circular dichroism (XMCD) and dc magnetic susceptibility measurements. At low temperatures, XMCD experiments have been performed at the Co K-edge in Co3BO5 and Co2FeBO5 single crystals in the fully ferrimagnetically ordered phase. The Co (K-edge) XMCD signal is found to be related to the Co2+ magnetic sublattices in both compounds, providing strong experimental support for the low-spin (LS) Co3+ scenario. The paramagnetic susceptibility is highly anisotropic. An estimation of the effective magnetic moment in the temperature range 100–250 K correlates well with two Co2+ ions in the high-spin (HS) state and some orbital contribution, while Co3+ remains in the LS state. The crystal structure of the Co3BO5 single crystal has been solved in detail at the T range 296–703 K. The unit cell parameters and volume show anomalies at 500 and 700 K. The octahedral environment of the Co4 site strongly changes with heating. The generalized gradient approximation with Hubbard U correction calculations have revealed that, at low-temperatures, the system is insulating with a band gap of 1.4 eV, and the Co2+ ions are in the HS state, while Co3+ are in the LS state. At high temperatures (T > 700 K), the charge ordering disappears, and the system becomes metallic with all Co ions in 3d7 electronic configuration and HS state.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
M.N. Miheev Institute of Metal Physics UB RAS, Ekaterinburg, 620137, Russian Federation
Ural Federal University, Ekaterinburg, 620002, Russian Federation
Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, Departamento de Fisica de la Materia Condensada, Zaragoza, 50009, Spain
Servicio de Medidas Fisicas, Universidad de Zaragoza, Zaragoza, 50009, Spain
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
P.N. Lebedev Physical Institute of RAS, Moscow, 119991, Russian Federation
ESRF-The European Synchrotron, 71 Avenue des Martyrs CS40220, Grenoble Cedex 9, F-38043, France

Доп.точки доступа:
Kazak, N. V.; Казак, Наталья Валерьевна; Platunov, M. S.; Платунов, Михаил Сергеевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Gorev, M. V.; Горев, Михаил Васильевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Pchelkina, Z. V.; Gapontsev, V. V.; Streltsov, S. V.; Bartolome, J.; Arauzo, A.; Yumashev, V. V.; Gavrilkin, S. Y.; Wilhelm, F.; Rogalev, A.
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10.

Interplay of magnetic and superconducting subsystems in Ho-doped YBCO / D. M. Gokhfeld, S. V. Semenov, K. Y. Terentyev [et al.] // J. Supercond. Nov. Magn. - 2021. - Vol. 34. Is. 10. - P. 2537-2543, DOI 10.1007/s10948-021-05954-3. - Cited References: 26. - This work was supported by the Russian Foundation for Basic Research and the Government of the Krasnoyarsk Territory, Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project "Superconducting properties of YBCO incorporated by paramagnetic rare-earth elements" No. 20-42-240008 . - ISSN 1557-1939. - ISSN 1557-1947

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
TEMPERATURE
   TRANSPORT
   PEAK
   DY
   SUSCEPTIBILITY
   TRANSITION
   BEHAVIOR
Кл.слова (ненормированные):
Peak effect -- Bulk superconductors -- Critical current -- Pinning -- X-ray diffraction -- YBCO -- Doping -- Paramagnetic magnetization
Аннотация: Superconducting and paramagnetic contributions to the magnetization of polycrystalline Y1−xHoxBa2Cu3O7−δ samples were investigated. The superconductivity is responsible for a partial screening of magnetic ions from an external magnetic field and for a possible sinking of antiferromagnetic correlations between these ions. Magnetic moments of Ho ions influence on a peak effect induced by the order–disorder transition of the Abrikosov vortex lattice. The critical current density and the critical temperature of YBCO are not changed by the Ho doping.

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

Доп.точки доступа:
Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Semenov, S. V.; Семёнов, Сергей Васильевич; Terentyev, K. Yu.; Терентьев, Константин Юрьевич; Yakimov, I. S.; Balaev, D. A.; Балаев, Дмитрий Александрович; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk Territory, Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project "Superconducting properties of YBCO incorporated by paramagnetic rare-earth elements" [20-42-240008]
}
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11.

Magnetic and resonance properties of the Y0.5Sr0.5Cr0.5Mn0.5O3 polycrystal / G. S. Patrin, M. M. Mataev, K. Z. Seitbekova [et al.] // Phys. Solid State. - 2020. - Vol. 62, Is. 8. - P. 1350-1354, DOI 10.1134/S1063783420080272. - Cited References: 20. - This study was supported by the Ministry of Education and Science of the Republic of Kazakhstan, project no. 05130165 and carried out in the framework of the cooperation agreement between the Siberian Federal University and the Kazakh National Women's Teacher Training University . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
CHROMIUM
TRANSITION
Кл.слова (ненормированные):
yttrium-strontium chromite manganite -- antiferromagnetic interaction -- inverse susceptibility -- magnetic resonance
Аннотация: The magnetostatic and magnetic resonance properties of the Y0.5Sr0.5Cr0.5Mn0.5O3 polycrystalline system have been experimentally investigated. The predominance of the intracrystalline ferromagnetic interaction and the antiferromagnetic character of the intercrystallite interaction have been established. The magnetic resonance spectrum in the magnetically ordered region consists of two lines. The high-field line corresponds to the interacting parts of polycrystal shells and the low-field peak is related to the disordered system of ferromagnetic particles.

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Публикация на русском языке Магнитные и резонансные свойства поликристалла Y0.5Sr0.5Cr0.5Mn0.5O3 [Текст] / Г. С. Патрин, М. М. Матаев, К. Ж. Сейтбекова [и др.] // Физ. тверд. тела. - 2020. - Т. 62 Вып. 8. - С. 1204-1208

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Kazakh Natl Womens Teacher Training Univ, Alma Ata 050000, Kazakhstan.

Доп.точки доступа:
Patrin, G. S.; Патрин, Геннадий Семёнович; Mataev, M. M.; Seitbekova, K. Zh.; Shiyan, Ya. G.; Шиян, Ярослав Германович; Yarikov, S. A.; Яриков, Станислав Алексеевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Ministry of Education and Science of the Republic of KazakhstanGovernment of the Republic of KazakhstanMinistry of Education and Science of the Republic of Kazakhstan [05130165]
}
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12.

Cherkasskii, M.
Nutation resonance in ferromagnets / M. Cherkasskii, M. Farle, A. Semisalova // Phys. Rev. B. - 2020. - Vol. 102, Is. 18. - Ст. 184432, DOI 10.1103/PhysRevB.102.184432. - Cited References: 42. - We thank Benjamin Zingsem for helpful discussions. In part funded by Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation, the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), Projects No. 405553726 (CRC/TRR 270) and No. 392402498 (SE 2853/1-1) . - ISSN 2469-9950
Кл.слова (ненормированные):
Ferromagnetism -- Magnets -- Resonance -- Analytical expressions -- Applied magnetic fields -- Ferromagnets -- Frequency dependent susceptibility -- Inertial dynamics -- Landau-Lifshitz-Gilbert equations -- Microwave excitations -- Ferromagnetic materials
Аннотация: The inertial dynamics of magnetization in a ferromagnet is investigated theoretically. The analytically derived dynamic response upon microwave excitation shows two peaks: ferromagnetic and nutation resonances. The exact analytical expressions of frequency and linewidth of the magnetic nutation resonance are deduced from the frequency-dependent susceptibility determined by the inertial Landau-Lifshitz-Gilbert equation. The study shows that the dependence of nutation linewidth on the Gilbert precession damping has a minimum, which becomes more expressive with increase of the applied magnetic field.

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Держатели документа:
Department of General Physics 1, St. Petersburg State University, St. Petersburg, 199034, Russian Federation
Faculty of Physics and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Duisburg, 47057, Germany
Kirensky Institute of Physics, Federal Research Center, Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Farle, M.; Фарле, Михаель; Semisalova, A.
}
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13.

Grain-size dependence of magnetic microstructure and high-frequency susceptibility of nanocrystalline thin films: A micromagnetic simulation study / A. V. Izotov, B. A. Belyaev, P. N. Solovev, N. M. Boev // J. Magn. Magn. Mater. - 2021. - Vol. 529. - Ст. 167856, DOI 10.1016/j.jmmm.2021.167856. - Cited References: 73. - The reported study was funded by RFBR, the Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund and JSC «NPP «Radiosviaz», project number 20-42-242901 . - ISSN 0304-8853
Кл.слова (ненормированные):
Micromagnetic simulation -- Nanocrystallites -- Local magnetic anisotropy -- Ferromagnetic resonance -- Magnetization ripple -- Two-magnon scattering process
Аннотация: The size of crystallites is one of the most important factors that determine the key characteristics of nanocrystalline thin magnetic films that make them very promising media for various applications. In this paper, using micromagnetic simulation, we study in detail the influence of the grain size on the magnetic microstructure of the films and its relation with high-frequency dynamics of magnetization. When the grain size exceeds some critical value Dcr, a sharp broadening and shift of the ferromagnetic resonance line are observed at certain frequencies of the alternating magnetic field. Using a two-magnon scattering model, it is shown that these effects are caused by the scattering of spin waves on the inhomogeneous stochastic magnetic structure—magnetization ripple. An expression for the determination of the critical size Dcr is obtained. The micromagnetic simulation results agree with the main conclusions of the static and dynamic theories of magnetization ripple and also confirmed by experimental data reported by other authors.

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Держатели документа:
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Solovev, P. N.; Соловьев, Платон Николаевич; Boev, N. M.; Боев, Никита Михайлович
}
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14.

    Numerical calculation of high frequency magnetic susceptibility in thin nanocrystalline magnetic films / A. V. Izotov [et al.] // Physica B. - 2018. - Vol. 556. - P. 42-47, DOI 10.1016/j.physb.2018.12.006. - Cited References: 32. - This work was supported by the Ministry of Education and Science of the Russian Federation, №RFMEFI60417X0179. . - ISSN 0921-4526. - ISSN 1873-2135
   Перевод заглавия: Численный расчет высокочастотной магнитной восприимчивости тонких нанокристаллических магнитных пленок
Рубрики:
Physics, Condensed Matter
Кл.слова (ненормированные):
micromagnetic simulation -- magnetization dynamics -- magnetic susceptibility -- ferromagnetic resonance -- nanocrystalline film -- soft magnetic film
Аннотация: Two numerical micromagnetic methods most suitable for calculation of the high frequency magnetic susceptibility of nanocrystalline thin films were considered in detail. The methods are based on the Landau–Lifshitz equation, linearized around the equilibrium state leading to an eigenvalue problem or solved using an undetermined coefficients technique. An analysis and estimation of an efficiency of the methods were carried out. Several conclusions about their advantages and shortcomings, as well as specifics of their practical application were drawn.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, 660036 Krasnoyarsk, Russia
Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Belyaev, B. A.; Беляев, Борис Афанасьевич; Solovev, P. N.; Соловьев, Платон Николаевич; Boev, N. M.; Боев, Никита Михайлович
}
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15.

Magnetic and optical properties of bismuth pyrostannate Bi2(Sn0.9Mn0.1)2O7 / L. V. Udod [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P6.16. - P. 324. - It was supported by the RFI no.15-42-04099, government work no.114090470016 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
magnetic susceptibility -- Raman spectra -- luminescence

Доп.точки доступа:
Udod, L. V.; Удод, Любовь Викторовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Krylov, A. S.; Крылов, Александр Сергеевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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16.

Magnetic susceptibility and electron magnetic resonance study of Sr doped PrMnO3 thin films / Yu. E. Samoshkina [et al.] // Магнитные материалы. Новые технологии : тез. докл. VII Байкал. Междунар. конф. / Иркутский гос. ун-т. - Иркутск, 2016. - P. 223. - Библиогр.: 5 назв. - The work was supported by the Russian Foundation for Basic Researches, Grant No. 16-32-00209 mol_a and the Grant of the President of the Russian Federation no. NSh- 7559.2016.2 . - ISBN 978-591-345-152-1. - ISBN 978-591-345-152-1

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Доп.точки доступа:
Исхаков, Рауф Садыкович \чл. прогр. ком.\; Iskhakov, R. S.; Аплеснин, Сергей Степанович \чл. прогр. ком.\; Aplesnin, S. S.; Овчинников, Сергей Геннадьевич \чл. прогр. ком.\; Ovchinnikov, S. G.; Samoshkina, Yu. E.; Самошкина, Юлия Эрнестовна; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Andreev, N. V.; Андреев Н. В.; Chichkov, V. I.; Чичков В. И.; "Магнитные материалы. Новые технологии", Байкальская международная конференция(7 ; 2016 ; авг. ; 22-26 ; Листвянка, пос. (Иркутская обл.)); "Magnetic materials. New tecnologies", Baikal International Conference(7 ; 2016 ; Aug. ; 22-26 ; Listvyanka, Irkutsk region); Байкальская международная конференция "Магнитные материалы. Новые технологии"(7 ; 2016 ; авг. ; 22-26 ; п. Листвянка, Иркутская обл.); Иркутский государственный университет
}
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17.

    Val'kov, V. V.
    The modification of low-temperature magnetic properties of the Fe-based double-zigzag single-chain magnet under irradiation / V. V. Val'kov, M. S. Shustin // J. Magn. Magn. Mater. - 2017. - Vol. 440. - P. 19-22, DOI 10.1016/j.jmmm.2016.12.100. - Cited References: 14. - This study was supported by the Presidium of the Russian Academy of Sciences, program Actual problems of low temperature physics (project 0358-2015-0005); the Russian Foundation for Basic Research, projects nos. 16-42-243057 (partly with Government of Krasnoyarsk Territory) and 15-42-04372; Technology Support Fund to the research project nos. 14/16. The work of M.S.S. was supported by grant of the President of the Russian Federation (project MK-1398.2017.2). . - ISSN 0304-8853
   Перевод заглавия: Модификация низкотемпературных свойств железо содержащего одноцепочечного магнетика с магнитной топологией двойного зигзага

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SPIN-CROSSOVER
MODEL
Кл.слова (ненормированные):
Single-chain magnets -- Light-induced spin crossover -- Magnetic susceptibility -- Quantum phase transitions
Аннотация: An exact solution for a generalized Ising model describing single-chain magnet {[FeIII(Tp*)(CN)3]2FeII(bpmh)}·2H2O with alternating high-spin and low-spin iron ions and double-zigzag magnetic topology has been calculated making use of the transfer-matrix technique. The introduction of a statistical ensemble taking into account the presence of iron ions with high-spin (HS) and low-spin (LS) states made it possible to describe the modification of magnetic susceptibility under optical irradiation. It has been shown that joint implementation of iron ions with photoinduced magnetic states and non-magnetic intersite repulsion ions of these states is caused by the difference of the ionic radii of HSFeIIHSFeII and LSFeIILSFeII leads to the quantum phase transitions in the system.

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Доп.точки доступа:
Shustin, M. S.; Шустин, Максим Сергеевич; Вальков, Валерий Владимирович; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН
}
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18.

Averyanov, E. M.
Orientation ordering and critical behavior of discoid nematics / E. M. Averyanov // Zhurnal Eksperimentalnoi Teor. Fiz. - 1996. - Vol. 110, Is. 5. - P. 1820-1840. - Cited References: 55 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
LIQUID-CRYSTALS
   PHASE-TRANSITION
   ISOTROPIC-PHASE
   LOCAL FIELD
   SMECTIC-A
   MOLECULES
   SUSCEPTIBILITY
   CONFORMATION
   PARAMETER
   DYNAMICS

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}
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19.

Ordered and disordered magnetic phases coexistence in the quasi-low-dimensional oxyborate Cu2MnBO5 / E. M. Moshkina [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. O3.3. - P. 180. - References: 1 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
ferrimagnet -- magnetic structure -- magnetic susceptibility

Доп.точки доступа:
Moshkina, E. M.; Мошкина, Евгения Михайловна; Ritter, C.; Eremin, E. V.; Еремин, Евгений Владимирович; Seryotkin, Yu. V.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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20.

Ignatchenko, V. A.
High-frequency susceptibility in gradient thin films / V. A. Ignatchenko, D. S. Tsikalov // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. O5.16. - P. 264. - References: 1 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
high-frequency susceptibility -- resonances -- gradient thin films

Доп.точки доступа:
Tsikalov, D. S.; Цикалов, Денис Сергеевич; Игнатченко, Вальтер Алексеевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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