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Orlov, V. A.
On the Effect of Magnetostatic Interaction on the Collective Motion of Vortex Domain Walls in a Pair of Nanostripes / V. A. Orlov, A. A. Ivanov, I. N. Orlova // Phys. Status Solidi B. - 2019. - Vol. 256, Is. 10. - Ст. 1900113, DOI 10.1002/pssb.201900113. - Cited References: 49. - The reported study was funded by RFBR according to the research project no. 18-02-00161. . - ISSN 0370-1972
Кл.слова (ненормированные):
domain walls -- magnetic vortex -- nanostripes -- resonance
Аннотация: The periodic motion of interacting vortex domain walls in a pair of nanostripes has been analytically and numerically investigated. A model consisting of two parallel nanostripes with the domain magnetization structure has been proposed, where domains are separated by vortex walls. The magnetic subsystems of the stripes magnetostatically interact, which causes the existence of normal magnetic vortex motion modes in the latter. Frequencies of the collective magnetization modes have been calculated using empirical expressions for the magnetic energy of interaction between vortex walls. It is shown that not any combinations of the polarity and chirality lead to the resonance magnetization behavior in ac fields. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Pedagogical University after V.P. Astafev, Krasnoyarsk, 660049, Russian Federation

Доп.точки доступа:
Ivanov, A. A.; Orlova, I. N.; Орлов, Виталий Александрович
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Kniazev, I.
Magnetic transition study in e-Fe2O3 by conventional Mössbauer spectroscopy and synchrotron radiation source / Yu. V. Knyazev // NRS workshop : list of posters. - 2019. - Ст. 9

Материалы семинара,
Материалы семинара

Доп.точки доступа:
Князев, Юрий Владимирович; EBS Workshop on Nuclear Resonance Scattering(2019 ; March. 11-12 ; Grenoble, France)
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Vazhenina, I. G.
Spin-Wave Resonance Detection of Nanostructured Magnetic Alloy Inhomogeneities, Using the Example of Co–P and Co–Ni Planar Systems / I. G. Vazhenina, L. A. Chekanova, R. S. Iskhakov // Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 6. - P. 713-715, DOI 10.3103/S1062873819060364. - Cited References: 12. - The reported study was funded by the Russian Foundation for Basic Research, the Government of Krasnoyarsk Krai, and the Krasnoyarsk Regional Fund of Science as part of research project no. 18-42-243005 “Synthesis and Investigation of Magnetic Properties of Gradient Materials Characterized by a Predetermined Type of the Magnetic Parameter Change.” . - ISSN 1062-8738
Кл.слова (ненормированные):
Magnetic materials -- Magnetic thin films -- Multilayers -- Nanocrystals -- Nickel alloys -- Resonance -- Spin waves -- Thickness measurement
Аннотация: Inhomogeneous layered magnetic thin films of amorphous and nanocrystalline Со–Р and Co–Ni alloys are studied via spin-wave resonance. It is found that the formation of a magnetic potential profile specified over the coating thickness leads to characteristic modifications of the spin-wave resonance spectrum. Another important factor that determines the type of modification is the dominant magnetic parameter (the constant of magnetization or exchange coupling).

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Публикация на русском языке Важенина, Ирина Георгиевна. Неоднородности в магнитных наноструктурных сплавах, выявляемые методом спин-волнового резонанса, на примере планарных систем Co–P и Co–Ni [Текст] / И. Г. Важенина, Л. А. Чеканова, Р. С. Исхаков // Изв. РАН. Сер. физич. - 2019. - Т. 83 № 6. - С. 786–788

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

Доп.точки доступа:
Chekanova, L. A.; Чеканова, Лидия Александровна; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Важенина, Ирина Георгиевна
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    Togushova, Yu. N.
    Role of Interactions in the Energy of the Spin Resonance Peak in Fe-Based Superconductors / Y. N. Togushova, M. M. Korshunov // Solid State Phenomena. - 2019. - Vol. 289 SSP. - P. 212-217, DOI 10.4028/www.scientific.net/SSP.289.212. - Cited References: 30. - This work was supported in part by the Russian Foundation for Basic Research (grant 16-02-00098), Presidium of RAS Program for the Fundamental Studies #12, and “BASIS” Foundation for Development of Theoretical Physics and Mathematics. MMK acknowledges support by the Gosbudget program # 0356-2017-0030.
   Перевод заглавия: Влияние взаимодействий на энергию спин-резонансного пика в сверхпроводниках на основе железа
Рубрики:
Solid Compounds of Transition Elements III
Кл.слова (ненормированные):
Fe-based superconductors -- Inelastic neutron scattering -- Magnetic mechanism of pairing -- Spin resonance peak -- Unconventional superconductivity
Аннотация: We consider the spin response within the five-orbital model for iron-based superconductors and study two cases: equal and unequal gaps in different bands. In the first case, the spin resonance peak in the superconducting state appears below the characteristic energy scale determined by the gap magnitude, 2ΔL. In the second case, the energy scale corresponds to the sum of smaller and larger gap magnitudes, ΔL+ΔS. Increasing the values of the Hubbard interaction and the Hund's exchange, we observe a shift of the spin resonance energy to lower frequencies.

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Держатели документа:
Siberian Federal University, Svobodny Prospect 79, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Korshunov, M. M.; Коршунов, Максим Михайлович; Тогушова Ю. Н.; International Conference on Solid Compounds of Transition Elements(21 ; 2018 ; 25- 29 March ; Vienna; Austria)
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Magnetic Anisotropy in Thin Films of FePt Detected by the Ferromagnetic Resonance Method / A. I. Dmitriev [et al.] // J. Surf. Ingestig. - 2019. - Vol. 13, Is. 2. - P. 210-214, DOI 10.1134/S102745101902006X. - Cited References: 18. - The study was performed under state contract no. 007-00160-18-00. The dependences of the magnetic moment of the samples on the magnetic-field intensity were measured using instruments of the Federal center for shared facilities for the physical-chemical research of compounds and materials at Kazan Federal University. . - ISSN 1027-4510. - ISSN 1819-7094

РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
FePt thin films -- ferromagnetic resonance -- magnetic anisotropy
Аннотация: FePt thin films are made via the heat treatment of structures containing Pt (001) and Fe (001) epitaxial layers. X-ray spectral analysis and field-emission scanning electron microscopy show that the samples contain the cubic L12–Fe3Pt phase and the tetragonal L10–FePt phase. The magnetic anisotropy of the thin films is studied by ferromagnetic resonance and magnetometric methods. The contributions from the cubic and tetragonal phases to the ferromagnetic-resonance spectrum of the sample are distinguished. The key characteristics of thin films which determine their practical applicability are determined: the Gilbert damping parameter G ~ 0.4, the first and second crystal anisotropy constants K1⊥ = –4.08 × 106 erg/cm3, K2⊥ = 1.34 × 106 erg/cm3, K2|| = –9.76 × 104 erg/cm3.

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Публикация на русском языке Магнитная анизотропия в тонких пленках FePt, детектируемая методом ферромагнитного резонанса [Текст] / А. И. Дмитриев [и др.] // Поверхность. - 2019. - № 3. - С. 49-54

Держатели документа:
Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Oblast, Russia.
Russian Univ Transport, Moscow 127994, Russia.
Kazan Fed Univ, Kazan 420008, Russia.
Plekhanov Russian Univ Econ, Moscow 117997, Russia.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Dmitriev, A. I.; Kulikov, A. V.; Gilmutdinov, I. F.; Dremova, N. N.; Mazitov, A. A.; Dmitrieva, M. S.; Alekseev, S. I.; Myagkov, V. G.; Мягков, Виктор Григорьевич; [007-00160-18-00]
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    Electron Paramagnetic Resonance of Cr3+ Ions in ABO(3) (A = Sc, In, Ga) Diamagnetic Crystals / A. M. Vorotynov [et al.] // J. Exp. Theor. Phys. - 2018. - Vol. 127, Is. 6. - P. 1067-1073, DOI 10.1134/S1063776118120245. - Cited References: 14 . - ISSN 1063-7761. - ISSN 1090-6509
Рубрики:
SPIN-RESONANCE
   PAIRS
   ANISOTROPY
   VBO3
Аннотация: A magnetic resonance method is applied to the investigation of a number of isostructural diamagnetic compounds ABO3 (A = Sc, In, and Ga) with small additions of Cr3+ ions (S = 3/2) sufficient to observe single-ion and pair spectra. It is shown that the resonance spectra for isolated Cr3+ ions can be described to a good accuracy by the ordinary axial spin Hamiltonian for 3d ions in octahedral oxygen environment. The parameters of the spin Hamiltonian are determined for single Cr3+ ion and Cr3+–Cr3+ pair. Lattice distorsions of the parent ABO3 crystals caused by the Cr3+ impurities is discussed.

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Публикация на русском языке Электронный парамагнитный резонанс ионов Cr3+ в диамагнитных кристаллах ABO3 (A = Sc, In, Ga) [Текст] / А. М. Воротынов [и др.] // Журн. эксперим. и теор. физ. - 2018. - Т. 154 Вып. 6. - С. 1160-1167

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

Доп.точки доступа:
Vorotynov, A. M.; Воротынов, Александр Михайлович; Rudenko, V. V.; Руденко, Валерий Васильевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Molokeev, M. S.; Молокеев, Максим Сергеевич
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    Study of Peculiarities of the Microwave Absorption Spectrum of Nanocrystalline Thin Magnetic Films / B. A. Belyaev [et al.] // Russ. Phys. J. - 2019. - Vol. 61, Is. 10. - P. 1798-1805, DOI 10.1007/s11182-019-01603-4. - Cited References: 22. - This work was supported by the Ministry of Education and Science of the Russian Federation, project No. RFMEFI60417X0179. . - ISSN 1064-8887. - ISSN 1573-9228
Рубрики:
MICROMAGNETIC CALCULATION
   SIMULATIONS
   PARTICLES
   MODES
Кл.слова (ненормированные):
micromagnetic modeling -- nanocrystallites -- random magnetic anisotropy -- ferromagnetic resonance -- microwave
Аннотация: Based on the micromagnetic model which takes into account the random distribution of the uniaxial magnetic anisotropy directions in crystallites of a nanocrystalline film, an effective method has been implemented for calculation of the magnetization dynamics in microwave fields. For a certain range of crystallite sizes, when the energy of the random magnetic anisotropy is comparable to the exchange energy, a significant change of the ferromagnetic resonance field, broadening of the resonance line, and the appearance of an asymmetry in the shape of the resonance curve were found. With an increase of the crystallite sizes, the resonance field first grows, then, it quickly decreases to its minimum, and then, it grows again to reach saturation. In this case, the steepness of the left slope of the broadening resonance curve first decreases faster than that of the right slope, leading to the symmetry breaking of the resonance curve shape, then, the curve becomes symmetrical again, and then, the steepness of the left slope becomes greater than that of the right slope.

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Публикация на русском языке Исследование особенностей спектра СВЧ-поглощения нанокристаллических тонких магнитных пленок [Текст] / Б. А. Беляев [и др.] // Изв. вузов. Физика. - 2018. - Т. 61 № 10. - С. 50-56

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr KSC, Siberian Branch, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Boev, N. M.; Боев, Никита Михайлович; Izotov, A. V.; Изотов, Андрей Викторович; Solovev, P. N.; Соловьев, Платон Николаевич; Ministry of Education and Science of the Russian Federation [RFMEFI60417X0179]
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    Two-Magnon Relaxation Processes in Nanocrystalline Thin Magnetic Films / A. V. Izotov [et al.] // Russ. Phys. J. - 2019. - Vol. 61, Is. 12. - P. 2313-2320, DOI 10.1007/s11182-019-01673-4. - Cited References: 25. - This research was done with support of the Russian Ministry of Education and Science, task No. 3.1031.2017/PCh. . - ISSN 1064-8887. - ISSN 1573-9228
Рубрики:
FERROMAGNETIC-RESONANCE LINEWIDTH
   MICROMAGNETIC CALCULATION
   SCATTERING
Кл.слова (ненормированные):
micromagnetic simulation -- nanocrystallites -- random magnetic anisotropy -- ferromagnetic resonance -- microwave frequencies -- two-magnon relaxation process
Аннотация: Numerical analysis of the micromagnetic model was used to reveal the ‘resonance’ feature of relaxation processes in nanocrystalline thin magnetic films. This feature manifests itself in the form of sharp broadening of the ferromagnetic resonance (FMR) line at a certain frequency f1 depending on magnetic characteristics of the film, and is observed only in films the thickness of which exceeds some threshold value dmin. Sharp broadening of the FMR line is accompanied by significant shift of the resonance field, whereas the shift value changes the sign at frequency ~ f1. It was shown analytically that the nature of observed effects is associated with the two-magnon process of spin waves scattering on quasi-periodic magnetic microstructure – magnetization ‘ripple’. Obtained expressions for the threshold value of film thickness dmin and frequency of maximum broadening of FMR line f1 agree well with the results of numerical computation of micromagnetic model.

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Публикация на русском языке Особенности двухмагнонных процессов релаксации в нанокристаллических тонких магнитных пленках [Текст] / А. В. Изотов [и др.] // Изв. вузов. Физика. - 2018. - Т. 61 № 12. - С. 153-159

Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr KSC, Siberian Branch, 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; Russian Ministry of Education and Science [3.1031.2017/PCh]
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Magnetic Resonance Imaging of Water Absorption by Highly Porous Ceramic Materials / E. V. Morozov [et al.] // Dokl. Chem. - 2019. - Vol. 484, Is. 2. - P. 44-47, DOI 10.1134/S0012500819020058. - Cited References: 9. - The studies were performed using equipment of KRTsKP FITs "KNTs SO RAN" in the framework of the program of basic research of the Russian Academy of Sciences (project no. V.44.1.7.) regarding the development of the MRI methodology for studying composite and porous materials, and also supported by the Russian Foundation for Basic Research (project no. 16-29-05334ofi_m "Scientific foundations for creating thin-film coatings with controlled wettability") regarding the development of water-repellent porous materials. . - ISSN 0012-5008
Кл.слова (ненормированные):
magnetic resonance imaging -- porosity -- ceramic materials -- hydrophobic coatings -- adsorption -- capillary phenomena
Аннотация: A nontrivial character of water absorption in highly porous ceramic materials has been demonstrated for the first time by magnetic resonance imaging: a phenomenon of hygroscopic memory has been detected consisting in the concentration of adsorbed water in certain areas inside the sample, repeated during subsequent wetting with water. It has been shown that hydrophobization of the material by applying fluoro paraffin coatings to oxide fibers using the method of dissolution of fluoropolymers in supercritical CO2 has a significant impact on the transport of water into products and can be considered an efficient means of protecting porous materials from moisture. The results demonstrate the capabilities of the MRI method in studying the water absorption and identifying water migration pathways in highly porous materials.

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Публикация на русском языке Магнитно-резонансная томография водопоглощения высокопористыми керамическими материалами [Текст] / Е. В. Морозов [и др.] // Докл. Акад. наук. - 2019. - Т. 484 № 5. - С. 563-567

Держатели документа:
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
All-Russian Research Institute of Aviation Materials, Moscow, 105005, Russian Federation
Gubkin State University of Oil and Gas, Moscow, 119991, Russian Federation

Доп.точки доступа:
Morozov, E. V.; Морозов, Евгений Владимирович; Buznik, V. M.; Bespalov, A. S.; Grashchenkov, D. V.
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10.

Korshunov, M. M.
Magnetic interactions, superconductivity, and spin-resonance peak in iron-based materials / M. M. Korshunov, V. A. Shestakov, Yu. N. Togushova // Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.]; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст. I.I1. - P. 108. - Cited References: 14. - Support by Presidium of RAS Program for the Fundamental Studies #12 “BASIS” Foundation for Development of Theoretical Physics and Mathematics is acknowledged . - 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; Shestakov, V. A.; Шестаков, Вадим Андреевич; Togushova, Yu. N.; Тогушова Ю.Н.; Коршунов, Максим Михайлович; 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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