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The effect of heat treatment on microstructure and martensitic transformation temperatures in Ni44Fe19Ga27Co10 single crystals / E. E. Timofeeva, E. Yu. Panchenko, A. B. Tokhmetova [et al.] // Phys. Scr. - 2024. - Vol. 99, Is. 1. - Ст. 015958, DOI 10.1088/1402-4896/ad16b2. - Cited References: 34. - This work was supported by the Russian Science Foundation (grant No. 21-19-00287) . - ISSN 0031-8949. - ISSN 1402-4896
Кл.слова (ненормированные):
martensitic transformations -- single crystals -- aging -- second phase particles -- microstructure
Аннотация: The microstructure and temperature of martensitic transformation of Ni44Fe19Ga27Co10 single crystals after aging at temperatures from 623 K to 1173 K were studied by electron microscopy and differential scanning calorimetry. The temperature ranges of the second phase precipitation, their lattice structure and volume fraction, and also the modification of the nanodomain structure of the L21+B2 high-temperature phase were determined in dependence on aging temperature. The influence of microstructure parameters on the martensitic transformation temperatures, transformation intervals and thermal hysteresis has been discussed.

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Держатели документа:
Tomsk State University, Novosobornaya square 1, Tomsk, 634050, Russia
Kirensky Institute of Physics, FRC KSC SB RAS, Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Timofeeva, E. E.; Panchenko, E. Yu.; Tokhmetova, A. B.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Zherdeva, M. V.; Tagiltsev, A. I.; Surikov, N. Yu.; Chumlyakov, Yu. I.
}
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    Ферромагнитный резонанс в суперпарамагнитных частицах NiFe2O4 / С. В. Столяр, О. А. Ли, Е. Д. Николаева [и др.] // Магнитные материалы. Новые технологии : тез. докл. IX Байкал. междунар. конф. BICMM-2023 / чл. прогр. ком.: S. S. Aplesnin [et al.] ; чл. орг. ком. R. S. Iskhakov [et al.]. - Иркутск, 2023. - С. 47-48. - Библиогр.: 4 . - ISBN 978-5-962402178-0
   Перевод заглавия: Ferromagnetic resonance in superparamagnetic particles NiFe2O4

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Держатели документа:
Сибирский федеральный университет
Красноярский научный центр СО РАН
Институт физики им. Л. В. Киренского СО РАН

Доп.точки доступа:
Аплеснин, Сергей Степанович \чл. прогр. ком.\; Aplesnin, S. S.; Балаев, Дмитрий Александрович \чл. прогр. ком.\; Balaev, D. A.; Овчинников, Сергей Геннадьевич \чл. прогр. ком.\; Ovchinnikov, S. G.; Исхаков, Рауф Садыкович \чл. орг. ком.\; Iskhakov, R. S.; Столяр, Сергей Викторович; Stolyar, S. V.; Ли, О.А.; Николаева, Е. Д.; Исхаков, Рауф Садыкович; Боев, Никита Михайлович; Boev, N. M.; Шохрина, А. О.; Байкальская международная конференция "Магнитные материалы. Новые технологии"(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Магнитные материалы. Новые технологии", Байкальская международная конференция(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Magnetic materials. New tecnologies", Baikal International Conference(9 ; 2023 ; Sept. ; 11-14 ; Baikalsk); Иркутский государственный университет
}
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Belyaev, B. A.
The effective permittivity of an anisotropic composite of spheroidal particles in a dielectric matrix / B. A. Belyaev, V. V. Tyurnev, S. A. Khodenkov // Tech. Phys. Lett. - 2022. - Vol. 48, Is. 3. - P. 110-114, DOI 10.1134/S1063785022040058. - Cited References: 10. - This study was carried out within the framework of state order FEFE-2020-0013 of the Ministry of Science and Higher Education of the Russian Federation . - ISSN 1063-7850
Кл.слова (ненормированные):
composite material -- anisotropic permittivity -- oblate and prolate particles -- depolarization factors
Аннотация: The concentration dependences of the effective permittivity have been obtained for an anisotropic composite consisting of a dielectric matrix filled with codirectional particles in the form of oblate or prolate ellipsoids of revolution (spheroids). The calculation has been made by solving numerically a system of coupled quadratic and integral equations obtained using the rigorous modification of the quasi-static Bruggeman theory. It is shown that the traditional simplified modification of the Bruggeman theory, which is widely used for calculating anisotropic composites, leads to errors of different signs for electromagnetic waves of the longitudinal and transverse polarizations relative to the spheroid axes. The dependences of the errors on the particle concentration are nonmonotonic and extrema observed in them can exceed 100%. The positions and values of the extrema depend strongly on the ellipticity of particles and the contrast of their permittivity with that of the matrix.

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Публикация на русском языке Беляев, Борис Афанасьевич. Эффективная диэлектрическая проницаемость анизотропного композита из сфероидных частиц в диэлектрической матрице [Текст] / Б. А. Беляев, В. В. Тюрнев, С. А. Ходенков // Письма в Журн. техн. физ. - 2021. - Т. 47 Вып. 23. - С. 22-26

Держатели документа:
Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Tyurnev, V. V.; Тюрнев, Владимир Вениаминович; Khodenkov, S. A.
}
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    Synthesis and characterization of nanoscale composite particles formed by 2D layers of Cu-Fe sulfide and Mg-based hydroxide / Y. L. Mikhlin, R. V. Borisov, S. A. Vorobyev [et al.] // J. Mater. Chem. A. - 2022. - Vol. 10, Is. 17. - P. 9621-9634, DOI 10.1039/d2ta00877g. - Cited References: 84. - This research was supported by the Russian Foundation for Basic Research, Krasnoyarsk Territory Administration and Krasnoyarsk Territory Science Foundation, project 20-43-242903. Facilities of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” were employed in the work . - ISSN 2050-7488
   Перевод заглавия: Синтез и исследование наноразмерных композитных частиц, образованных двумерными слоями сульфида Cu-Fe и гидроксида на основе Mg
Кл.слова (ненормированные):
Binary alloys -- Copper compounds -- Electron energy levels -- Electron energy loss spectroscopy -- Electron scattering -- Light absorption -- Light scattering -- Magnesium compounds -- Near infrared spectroscopy -- Paramagnetism -- Sols -- Sulfur compounds -- X-ray photoelectron spectroscopy
Аннотация: We introduce here a multifunctional material composed of alternating atomic sulfide sheets close to the composition of CuFeS2 and Mg-based hydroxide ones (valleriite), which are assembled due to their electric charges of opposite sign. Valleriite particles 50-200 nm in lateral size and 10-20 nm in thickness were synthesized via a simple hydrothermal pathway using various concentrations of precursors and dopants, and examined with XRD, TEM, EDS, X-ray photoelectron spectroscopy, reflection electron energy loss spectroscopy (REELS), Mossbauer, Raman and UV-vis-NIR spectroscopies, and magnetization, dynamic light scattering, and zeta potential measurements. The electronic, magnetic and optical characteristics are found to be critically dependent on the charge (electron density) at the narrow-gap sulfide layers containing Cu+ and Fe3+ cations, and can be tuned via the composition of the hydroxide part. Particularly, substitution of Mg2+ with Al3+ increases the negative charge of the hydroxide layers and reduces the content of Fe3+-OH centers (10-45% of total iron); the effects of Cr and Co dopants entering both layers are more complicated. Mossbauer doublets of paramagnetic Fe3+ detected at room temperature transform into several Zeeman sextets at 4.2 K; the hyperfine fields up to 500 kOe and complex magnetic behavior, but not pure paramagnetism or antiferromagnetism, were observed for valleriites with the higher positive charge of the sulfide sheets, probably due to the depopulation of the minority-spin 3d states of S-bonded Fe3+ ions. Aqueous colloids of valleriite show optical absorption at 500-750 nm, which, along with the peaks at the same energies in REELS, may arise due to quasi-static dielectric resonance involving the vacant Fe 3d band and being dependent on the composition of both layers too. These and other findings call attention to valleriites as a new rich family of 2D materials for a variety of potential applications.

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Держатели документа:
Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of sciences, Akademgorodok, 50/24, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of sciences, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk, 660041, Russian Federation
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of sciences”, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Mikhlin, Y. L.; Borisov, R. V.; Vorobyev, S. A.; Tomashevich, Y. V.; Romanchenko, A. S.; Likhatski, M. N.; Karacharov, A. A.; Bayukov, O. A.; Баюков, Олег Артемьевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Krylov, A. S.; Крылов, Александр Сергеевич; Krylova, S. N.; Крылова, Светлана Николаевна; Nemtsev, I. V.; Немцев, Иван Васильевич
}
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    Obtaining particles with the structure Mg@C and (Mg@C)@Pd, their properties and stability in the hydrogenation/dehydrogenation processes / G. N. Churilov, N. S. Nikolaev, V. I. Elesina [et al.] // Int. J. Hydrogen Energy. - 2022. - Vol. 47. Is. 11. - P. 7299-7309, DOI 10.1016/j.ijhydene.2021.03.042. - Cited References: 46 . - ISSN 0360-3199
   Перевод заглавия: Получение частиц со структурой Mg@C и (Mg@C)@Pd, их свойства и стабильность в процессах гидрирования /дегидрирования
Кл.слова (ненормированные):
Core-shell particles -- Mg, С, Рd nanoparticles -- Sorption capacity of hydrogen -- Hydrogen-storage materials -- Magnesium hydride
Аннотация: In this work, we studied the change in the properties of powders with a core (magnesium) – shell structure (carbon and carbon/palladium) in the process of hydrogenation/dehydrogenation with hydrogen (99.995 wt%). Magnesium powders were obtained by plasma chemical synthesis in an atmosphere of argon containing a small amount of hydrogen (2–3 at.%) and nitrogen (8–9 at.%), when performing a low-frequency arc discharge between a tungsten electrode and a magnesium melt. The shell (carbon and carbon/palladium) was deposited in a plasma generator with vortex and magnetic stabilization. For all samples, a decrease in the sorption capacity of hydrogen was observed as a result of successive cycles of sorption and desorption reactions. It was found that the reason for this fall is associated with the formation of the MgO and Mg(OH)2 phase, which prevents the diffusion of hydrogen. The carbon shell provides a more complete hydrogenation of the magnesium particles, and an additional palladium shell increases the resistance to cyclic hydrogenation/dehydrogenation and reduces the temperature of these processes. According to the data obtained, powders with particles (Mg@C)@Pd can absorb the largest amount of hydrogen (6.9 wt%) for the duration of 5 cycles, after which the protective shell of the particles begins to collapse and a loss of sorption capacity is observed.

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Держатели документа:
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Svobodny, 79, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Akademgorodok 50/24, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Nikolaev, N. S.; Николаев, Никита Сергеевич; Elesina, V. I.; Елесина, Виктория Игоревна; Glushenko, G. A.; Глущенко, Гарий Анатольевич; Isakova, V. G.; Исакова, Виктория Гавриловна; Tomashevich, Y. V.
}
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Bulgakov, E. N.
Self-trapping of nanoparticles by bound states in the continuum / E. N. Bulgakov, A. F. Sadreev // Phys. Rev. B. - 2022. - Vol. 106, Is. 16. - Ст. 165430, DOI 10.1103/PhysRevB.106.165430. - Cited References: 46. - The work was supported by Russian Science Foundation Grant No. 22-12-00070 . - ISSN 2469-9950
Кл.слова (ненормированные):
Basic principles -- Bound-states -- Dielectric cylinder -- Dielectric particles -- Equilibrium positions -- Fabry-Perot resonators -- High-Q resonances -- Quasibound state -- Self-trapping -- Submicron -- Nanoparticles
Аннотация: In the first tutorial part of the paper, we show that equilibrium positions of small dielectric particles inside the Fabry-Perot resonator (FPR) are sensitive to a frequency of incident electromagnetic wave and size of particle. That elucidates basic principles of resonant trapping of nanoparticles by excitation of high-Q resonances of FPR. In the second part, we consider a long dielectric cylinder with submicron radius (primary cylinder) integrated into a metallic waveguide which supports symmetry-protected bound states in the continuum (BICs). We consider the case of a slightly shifted cylinder relative to the axis of symmetry of a waveguide that controls the Q factor of quasi-BIC. Then, the extra nanoparticle perturbs quasi-BIC as dependent on the size of the nanoparticle and position relative to the primary cylinder. An interplay between the resonant width of quasi-BIC and a degree of frequency perturbation defines whether a dragging nanoparticle is terminated at a surface of the primary cylinder for an ultrasmall size of nanoparticles or at the definite distances from the cylinder for the larger size of nanoparticles. Thereby, we demonstrate a paradigm of resonant self-trapping and sorting of nanoparticles by use of quasi-BICs. We also show extremal sensitivity of self-trapping to the frequency of an electromagnetic (EM) wave propagating over waveguide.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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Plasma-chemical method of silicon carbide modification to obtain particles with controlled surface morphology / T. A. Shalygina, M. S. Rudenko, I. V. Nemtsev [et al.] // Tech. Phys. Lett. - 2022. - Vol. 48, Is. 2. - P. 57-60, DOI 10.21883/TPL.2022.02.53582.19042. - Cited References: 9. - This study was conducted under state assignment from the Ministry of Science and Higher Education of the Russian Federation for the ”Smart Materials and Structures“ research laboratory (project No. FEFE-2020-0015 ”Development of Multipurpose Smart Materials and Structures Based on Modified Polymer Composite Materials Remaining Functional in Extreme Conditions“) . - ISSN 1063-7850. - ISSN 1090-6533
Кл.слова (ненормированные):
silicon carbide -- plasma chemistry -- surface morphology -- nanoparticles -- nanowires -- carbon shell -- core-shell
Аннотация: A plasma-chemical method for the modification of silicon carbide particles is presented, which makes it possible to obtain particles with a controlled surface morphology. The variable parameter of particle processing was the ratio of the fraction of plasma-forming (Ar) and additional (H) gases. It was shown that at Ar/H = 100/0, the formation of a carbon shell is observed; at Ar/H ratios of 91/9 and 84/16, the particles are characterized by a carbon shell decorated with silicon nanoparticles or nanowires, respectively. The modified particles were analyzed using scanning electron microscopy and Raman spectroscopy.

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Публикация на русском языке Плазмохимический способ модификации карбида кремния для получения частиц с управляемой морфологией поверхности [Текст] / Т. А. Шалыгина, М. С. Руденко, И. В. Немцев [и др.] // Письма в Журн. технич. физ. - 2022. - Т. 48 Вып. 4. - С. 15-19

Держатели документа:
Siberian State University of Science and Technology, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia
Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Russian Academy of Sciences, Krasnoyarsk, Russia

Доп.точки доступа:
Shalygina, T. A.; Rudenko, M. S.; Nemtsev, I. V.; Немцев, Иван Васильевич; Parfenov, V. A.; Voronina, S. Yu.
}
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Synthesis of Co-Ni alloy particles with the structure of a solid substitution solution by precipitation in a supercritical carbon dioxide / N. Nesterov, V. Pakharukova, S. Cherepanova [et al.] // Nanomaterials. - 2022. - Vol. 12, Is. 24. - Ст. 4366, DOI 10.3390/nano12244366. - Cited References: 52. - This research was funded by the Russian Science Foundation, grant number № 21-73-00213 (https://rscf.ru/project/21-73-00213/ (accessed on 2 September 2020)). - The authors are grateful to S.V. Komogortsev and S.V. Stolyar for fruitful discussions and A.A. Krasikov for help in measurements. The magnetic measurements were performed using equipment from the Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences . - ISSN 2079-4991
Кл.слова (ненормированные):
supercritical fluids -- Co-Ni alloy -- solid substitution solution
Аннотация: Mixed Co-Ni bimetallic systems with the structure of a solid substitution solution have been synthesized using the supercritical antisolvent precipitation (SAS) method, which uses supercritical CO2 as an antisolvent. The systems obtained have been characterized in detail using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), Fourier-transform infrared (FTIR) spectroscopy, and magnetostatic measurements. It has been found that Co-enriched systems have a defective hexagonal close-packed (hcp) structure, which was described by a model which embedded cubic fragments of packaging into a hexagonal close-packed (hcp) structure. It has been shown that an increase in water content at the precipitation stage leads to a decrease in the size of cubic fragments and a more uniform distribution of them in Co-enriched systems. It has also been shown that mixed systems have the greatest coercivity in the line of samples. Ni-enriched bimetallic systems have a cubic close-packed (ccp) structure with modified crystal lattice parameters.

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Держатели документа:
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, 660041 Krasnoyarsk, Russia

Доп.точки доступа:
Nesterov, Nikolay; Pakharukova, Vera; Cherepanova, Svetlana; Yakushkin, Stanislav; Gerasimov, Evgeniy; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семёнов, Сергей Васильевич; Dubrovskii, A. A.; Дубровский, Андрей Александрович; Martyanov, Oleg
}
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Muraev, P. S.
Ballistic transport of interacting Bose particles in a tight-binding chain / P. S. Muraev, D. N. Maksimov, A. R. Kolovsky // Phys. Rev. E. - 2022. - Vol. 106, Is. 6. - Ст. 064203, DOI 10.1103/PhysRevE.106.064203. - Cited References: 30. - This work has been supported by Russian Science Foundation through Grant No. N19-12-00167 . - ISSN 2470-0045. - ISSN 2470-0053
Кл.слова (ненормированные):
Bosons -- Quantum chemistry -- Transport properties
Аннотация: It is known that the quantum transport of noninteracting Bose particles across a tight-binding chain is ballistic in the sense that the current does not depend on the chain length. We address the question whether the transport of strongly interacting bosons can be ballistic as well. We find such a regime and show that, classically, it corresponds to the synchronized motion of local nonlinear oscillators. It is also argued that, unlike the case of noninteracting bosons, the transporting state responsible for the ballistic transport of interacting bosons is metastable, i.e., the current decays in the course of time. An estimate for the decay time is obtained.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
School of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
IRC SQC, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Kolovsky, A. R.; Коловский, Андрей Радиевич; Мураев, Павел Сергеевич
}
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10.

3D optical vortex lattices / D. A. Ikonnikov, S. A. Myslivets, V. G. Arkhipkin, A. M. Vyunishev // Ann. Phys.-Berlin. - 2021. - Vol. 533, Is. 7. - Ст. 2100114, DOI 10.1002/andp.202100114. - Cited References: 29. - This work was supported by the Russian Science Foundation (Grant No. 19-12-00203).The surface grating was fabricated and characterized at the Center for Collective Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. The authors thank M. N. Volochaev and A. I. Zaitsev for help . - ISSN 0003-3804. - ISSN 1521-3889

РУБ Physics, Multidisciplinary
Рубрики:
MANIPULATION
   PARTICLES
   ARRAY
   BEAMS
   GENERATION
   TRANSPORT
   VORTICES
Кл.слова (ненормированные):
optical lattices -- optical vortices -- Talbot effect
Аннотация: Fresnel diffraction of light beams with a topological charge on a 2D regular amplitude transparency mask is studied. Numerical predictions show that the 3D optical lattices of optical vortices can be formed using the Talbot effect, with these predictions confirmed by the experimental reconstruction of all 3D optical vortex lattices. The periodicity of the 3D optical vortex lattices is determined by the light wavelength and periodicity of a transparency mask. Furthermore, it is shown that the optical vortices are created and annihilated during light propagation behind the mask with the preservation of the total topological charge. The 3D optical vortex lattices are considered to be tolerant to the perturbations induced by trapped particles caused by the features of the Talbot effect. The 3D optical vortex lattices open new possibilities for light-matter interactions and the related applications.

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

Доп.точки доступа:
Ikonnikov, D. A.; Иконников, Денис Андреевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Russian Science FoundationRussian Science Foundation (RSF) [19-12-00203]
}
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11.

Bulgakov, E. N.
Resonant binding of dielectric particles to a metal surface without plasmonics / E. Bulgakov, K. Pichugin, A. Sadreev // Phys. Rev. A. - 2021. - Vol. 103, Is. 5. - Ст. L051501, DOI 10.1103/PhysRevA.103.L051501. - Cited References: 36. - The work was supported by Russian Foundation for Basic Research Project No. 19-02-00055 . - ISSN 2469-9926. - ISSN 2469-9934

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
RADIATION PRESSURE
   OPTICAL BINDING
   FORCES
   MANIPULATION
Аннотация: A high index dielectric spherical particle supports the high-Q resonant Mie modes that result in a regular series of sharp resonances in the radiation pressure. The presence of a perfectly conducting metal surface transforms the Mie modes into extremely high-Q magnetic bonding or electric antibonding modes for the close approach of a sphere to a surface. We show that an electromagnetic plane wave with normal incidence results in repulsive or attractive resonant optical forces relative to a metal for the excitation of electric bonding or magnetic antibonding resonant modes, respectively. A magnitude of resonant optical forces reaches the order of 1 nN of magnitude for micron-sized silicon particles and a power of light 1mW/μm2 that exceeds the gravitational force by four orders. However, what is the most remarkable is there are steady positions for a sphere between the pulling and pushing forces that give rise to the resonant binding of the sphere to a metal surface.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; Russian Foundation for Basic Research ProjectRussian Foundation for Basic Research (RFBR) [19-02-00055]
}
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12.

Photonic crystal structures based on submicron particles of polymethyl methacrylate / I. V. Nemtsev, O. V. Shabanova, N. P. Shestakov [et al.] // J. Phys. Conf. Ser. - 2021. - Vol. 1745: 6th International Conference on Information Technology and Nanotechnology, ITNT 2020 (26 - 29 May 2020, Samara, Russian Federation) Conference code: 167456, Is. 1. - Ст. 012024DOI 10.1088/1742-6596/1745/1/012024. - Cited References: 27. - We are grateful to the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS» for the provided equipment. The authors are also grateful to the Russian Foundation for Basic Research for financial support (grant No.18-42-243013)
Кл.слова (ненормированные):
IR absorption spectra -- Morphological parameters -- Photonic crystal films -- Poly(methyl methacrylate) (PMMA) -- Reflection spectra -- Resonance structure -- Sub-micron particles -- Submicron-sized spheres
Аннотация: Morphological parameters, reflection spectra, IR absorption spectra, and glass transition temperatures of submicron-sized spheres of poly(methyl methacrylate) (PMMA) formed in a water-acetone dispersion medium were studied in comparison with similar spheres obtained in distilled water. Dependence of a shrinkage degree of the submicrospheres on the concentration of acetone in water is studied. Features of the formation of periodic structures based on the water-acetone dispersions of PMMA in four different ways are considered. 2D (photonic crystal films) and 3D (artificial and inverse opals) resonance structures were obtained.

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Держатели документа:
Fed. Res. Ctr. Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok street 50, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Fed. Res. Ctr. Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok street 50, bul. 38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny ave. 79, Krasnoyarsk, 660041, Russian Federation
Spec. Des. and Technol. Bur. Nauka Fed. Res. Ctr. Krasnoyarsk Sci. Ctr. of the Siberian Br. of the Russ. Acad. of Sci., Akademgorodok street 50, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Nemtsev, I. V.; Немцев, Иван Васильевич; Shabanova, O. V.; Shestakov, N. P.; Шестаков, Николай Петрович; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; International Conference on Information Technology and Nanotechnology(6 ; 2020 ; May 26 - 29 ; Samara, Russian Federation)
}
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13.

    Nemtsev, I. V.
    Manufacturing of opals from polymethylmethacrylate particles in dispersion media with different viscosities / I. V. Nemtsev, O. V. Shabanova // J. Sib. Fed. Univ. Math. Phys. - 2021. - Vol. 14, Is. 2. - P. 176-183 ; Журн. СФУ. Матем. и физика, DOI 10.17516/1997-1397-2021-14-2-176-183. - Cited References: 42. - The study was carried out with the support of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS". The work was supported by the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (topic no. AAAA-A18-118041990041-8) . - ISSN 1997-1397. - ISSN 2313-6022
   Перевод заглавия: Синтез опалов из частиц полиметилметакрилата в дисперсионных средах с различной вязкостью
Кл.слова (ненормированные):
Emulsion-free polymerization -- Viscosity of dispersion medium -- PMMA beads -- Submicrosphere -- Self-assembly -- 2D and 3D colloidal crystals -- Photonic crystal -- Metamaterial -- SEM micrographs -- IR spectroscopy -- безэмульсионная полимеризация -- вязкость дисперсионной среды -- гранулы ПММА -- субмикросфера -- амосборка -- 2D и 3D коллоидные кристаллы -- фотонный кристалл -- метаматериал -- СЭМ-микрофотографии -- ИК-спектроскопия
Аннотация: The article was prepared based on the materials of the report at the first All-Russian scientific conference with international participation "YENISEI PHOTONICS – 2020". Photonic crystals are structures that have a spatial architecture with a periodically changing complex dielectric function at scales comparable to the wavelengths of light in the visible frequency range. The purpose of this study is to obtain three-dimensional photonic crystals by self-assembly from submicron spherical monodisperse particles of polymethylmethacrylate in dispersion media with different viscosities.
Фотонные кристаллы — это структуры, которые имеют пространственную архитектуру с периодически изменяющейся сложной диэлектрической функцией в масштабах, сопоставимых с длинами волн света в видимом диапазоне частот. Целью данной работы является получение трёхмерных фотонных кристаллов путём самосборки из субмикронных сферических монодисперсных частиц полиметилметакрилата в дисперсных средах с различной вязкостью.

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Federal Research Center, KSC SB RAS, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Special Designing and Technological Bureau "Nauka", Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shabanova, O. V.; Немцев, Иван Васильевич

}
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14.

Mitskan, V. A.
Implementation of the concept of spin polaron in cuprate superconductors within the diagram technique / V. A. Mitskan, M. M. Korovushkin, D. M. Dzebisashvili // JETP Letters. - 2021. - Vol. 114, Is. 5. - P. 289-295, DOI 10.1134/S0021364021170094. - Cited References: 43. - This work was supported by the Russian Foundation for Basic Research, project nos. 18-02-00837 and 20-32-70059 . - ISSN 0021-3640. - ISSN 1090-6487

РУБ Physics, Multidisciplinary
Рубрики:
ELECTRONIC-STRUCTURE
ELEMENTARY EXCITATIONS
QUASI-PARTICLES
Аннотация: The spectral properties of an ensemble of spin-polaron quasiparticles have been studied within the spin–fermion model of cuprate superconductors using the method combining the Feynman diagram technique and the diagram technique for spin operators. It has been shown that strong spin–charge coupling results in the formation of the lower spin-polaron band separated by a wide energy gap from the band of bare holes. It has been shown that the spin-polaron band has a local minimum near the (π/2, π/2) point of the Brillouin zone. A class of diagrams for the self-energy part that have a fundamental significance for the description of the main features of the spin-polaron spectrum has been determined.

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Публикация на русском языке Мицкан, Виталий Александрович. Реализация концепции спинового полярона в купратных сверхпроводниках на основе диаграммной техники [Текст] / В. А. Мицкан, М. М. Коровушкин, Д. М. Дзебисашвили // Письма в ЖЭТФ. - 2021. - Т. 114 Вып. 5. - С. 339-345

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

Доп.точки доступа:
Korovushkin, M. M.; Коровушкин, Максим Михайлович; Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Мицкан, Виталий Александрович
}
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15.

    Термическое распыление частиц в жидкости / А. А. Пшеничная, Н. П. Шестаков, А. А. Иваненко, М. Н. Волочаев // EurasiaScience : сборник статей [международной научно-практической конф.]. - Москва, 2021. - С. 87-92. - Библиогр.: 19 . - ISBN 978-5-6046083-0-2
   Перевод заглавия: Thermal sputtering of metal particles in the liquid
Аннотация: Представлен метод, совмещающий процесс получения высокодисперсных металлических частиц и процесс их введения в жидкий мономер, и установка для его осуществления. Получены суспензии, содержащие высокодисперсные металлические частицы сурьмы и алюминия. Получен полимер на основе суспензии, содержащей высокодисперсные металлические частицы сурьмы. Исследовано влияние высокодисперсных частиц металлов на спектральные характеристики эпоксидной смолы. Проведены измерения механических и физических свойств полученного полимера.

Материалы конференции,
Материалы конференции,
РИНЦ
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Пшеничная, Анастасия Александровна; Шестаков, Николай Петрович; Shestakov, N. P.; Иваненко, Александр Анатольевич; Ivanenko, A. A.; Волочаев, Михаил Николаевич; Volochaev, M. N.; "EurasiaScience", международная научно-практическая конференция(35 ; 2021 ; 15 февр. ; Москва); Научно-издательский центр "Актуальность.РФ"; Информационное телеграфное агентство России (ИТАР-ТАСС); Российская книжная палата; Научная электронная библиотека eLIBRARY.RU ; Пензенский государственный университет; Московский государственный университет им. М.В. Ломоносова
}
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16.

Komarov, K. K.
The origin of an inflection point on the temperature dependence of the London penetration depth in hole-doped cuprate high-temperature superconductors / K. K. Komarov, D. M. Dzebisashvili // J. Exp. Theor. Phys. - 2021. - Vol. 133, Is. 3. - P. 351-359, DOI 10.1134/S1063776121080021. - Cited References: 77. - This work was supported by the Russian Foundation for Basic Research, project nos. 18-02-00837 and 20-3270059 . - ISSN 1063-7761. - ISSN 1090-6509

РУБ Physics, Multidisciplinary
Рубрики:
MUON-SPIN-ROTATION
QUASI-PARTICLES
FERMI-SURFACE
Аннотация: A scenario of the formation of an experimentally observed inflection point on the temperature dependence of the London penetration depth λ in cuprate high-temperature superconductors (HTSCs) with optimal hole doping is discussed within the spin-polaron concept. It is shown that the reason for the appearance of an inflection point on the 1/λ2(T) dependence is due to the features of the energy spectrum of spin-polaron quasiparticles in the superconducting phase, as well as to the specific temperature dependence of their spectral density.

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Публикация на русском языке Комаров, Константин Константинович. Происхождение точки перегиба на температурной зависимости лондоновской глубины в дырочно-легированных купратных высокотемпературных сверхпроводниках [Текст] / К. К. Комаров, Д. М. Дзебисашвили // Журн. эксперим. и теор. физ. - 2021. - Т. 160 Вып. 3. - С. 415-425

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Комаров, Константин Константинович; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-02-00837, 20-3270059]
}
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17.

Plasmonic enhancement of local fields in ultrafine metal nanoparticles / L. K. Sorensen, A. D. Utyushev, V. I. Zakomirnyi [et al.] // J. Phys. Chem. C. - 2021. - Vol. 125, Is. 5. - P. 13900-13908, DOI 10.1021/acs.jpcc.1c01424. - Cited References: 65. - The work was supported by the Russian Science Foundation (project no. 18-13-00363). L.K.S acknowledges the support of Carl Tryggers Stifetelse, project CTS 18-441 . - ISSN 1932-7447
Кл.слова (ненормированные):
Crystal structure -- Electric fields -- Electromagnetic fields -- Metal nanoparticles -- Plasmonics -- Discrete interaction -- External fields -- High symmetry -- Metallic nanoparticles -- Nanoscale particles -- Near field imaging -- Optical response -- Plasmon field -- Plasmonic nanoparticles
Аннотация: We present an analysis of ultrafine metallic nanoparticles (1-15 nm) with respect to electromagnetic field generation by plasmonic excitations. A number of structures with different symmetries and geometries are studied in order to analyze the distributions of plasmonically generated near-electric fields and the concentration of hot and cold spots around the particles. The study is made possible by the recent development of an extended discrete interaction model (Ex-DIM) where the explicit dependency of the plasmonic spectra on the structure and composition of particles in the range of 1-15 nm is accounted for. With the Ex-DIM, the optical response of the internal crystal structure of the nanoscale particles can be visualized, thereby making it possible to predict the dependence of the generated local fields with respect to the position of the particles relative to the external field polarization. The results indicate rather surprising concentrations of the plasmon fields in very confined hot spots also in cases when the particles retain a high symmetry. The consequence of the findings of this study when using small symmetric nanoparticles for near-field imaging is briefly discussed.

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Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-751 20, Sweden
Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology, Stockholm, SE-10691, Sweden
International Research Center of Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Computational Modelling, Federal Research Center Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation
L. V. Kirensky Institute of Physics, Federal Research Center Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation
Federal Siberian Research Clinical Centre under Fmba of Russia, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Sorensen, L. K.; Utyushev, A. D.; Zakomirnyi, V. I.; Gerasimov, V. S.; Ershov, A. E.; Polyutov, S. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Agren, H.
}
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18.

Uncompensated magnetic moment and surface and size effects in few-nanometer antiferromagnetic NiO particles / D. A. Balaev, A. A. Krasikov, S. I. Popkov [et al.] // J. Magn. Magn. Mater. - 2021. - Vol. 539. - Ст. 168343, DOI 10.1016/j.jmmm.2021.168343. - Cited References: 98. - The TEM study was carried out on the equipment of the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences . - ISSN 0304-8853
Кл.слова (ненормированные):
Antiferromagnetic NiO nanoparticles -- Uncompensated magnetic moment -- Superparamagnetism -- Surface magnetic anisotropy
Аннотация: The analysis of the M(H) magnetization curves of antiferromagnetic nanoparticles yields information about magnetic subsystems formed in these objects, which are characterized by a large fraction of surface atoms. However, in the conventionally investigated experimental magnetic field range of up to 60–90 kOe, this analysis often faces the ambiguity of distinguishing the Langevin function-simulated contribution of uncompensated magnetic moments μun of particles against the background of a linear-in-field dependence (the antiferromagnetic susceptibility and other contributions). Here, this problem has been solved using a pulsed technique, which makes it possible to significantly broaden the range of external fields in which the μun contribution approaches the saturation. Nanoparticles of a typical NiO antiferromagnet with an average size of ~ 4.5 nm have been investigated. Based on the thorough examination of the M(H) magnetization curves measured in pulsed fields of up to 250 kOe, a model of the magnetic state of NiO nanoparticles of such a small size has been proposed. The average moment is ~130 μB (μB is the Bohr magneton) per particle, which corresponds to 60–70 decompensated spins of nickel atoms localized, according to the Néel hypothesis (μun ~ 3/2), both on the surface and in the bulk of a particle. A part of the surface spins unrelated to the antiferromagnetic core form another subsystem, which behaves as free paramagnetic atoms. Along with the antiferromagnetic core, an additional linear-in-field contribution has been detected, which is apparently related to superantiferromagnetism, i.e., the size effect inherent to small antiferromagnetic particles.

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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
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Krasikov, A. A.; Красиков, Александр Александрович; Popkov, S. I.; Попков, Сергей Иванович; Semenov, S. V.; Семёнов, Сергей Васильевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Kirillov, V. L.; Martyanov, O. N.
}
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19.

Bulgakov, E. N.
Giant resonant enhancement of optical binding of dielectric particles / E. N. Bulgakov, K. N. Pichugin, A. F. Sadreev // Phys. Rev. A. - 2020. - Vol. 102, Is. 4. - Ст. 043518, DOI 10.1103/PhysRevA.102.043518. - Cited References: 49. - This work was supported by Russian Foundation for Basic Research Project No. 19-02-00055. A.S. thanks D. Maksimov and E. Sherman for helpful discussions . - ISSN 2469-9926. - ISSN 2469-9934

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
FORCE
SPHERES
BEAM
Аннотация: Optical coupling of two identical dielectric particles gives rise to bonding and antibonding resonances. The latter is featured by significant narrowing of the resonant width and strong enhancement of the Q factor for the high-index micron-size particles in subwavelength range. We consider particles shaped as spheres and disks under coaxial illumination of dual incoherent counterpropagating Bessel beams. In the case of spheres we derive analytical expressions for the optical binding (OB) force which decays and displays two periods of oscillations. For close distances the OB force enormously increases in the resonant regime. The case of two coaxial disks is featured by extremal enhancement of the Q factor owing to the twofold variation over the distance between disks and the aspect ratio of each disk compared to the case of two spheres. In that case we demonstrate enhancement of the OB force up to several tens of nanonewtons. We show that the magnitude and sign of the OB force strongly depend on the longitudinal wave vector of the Bessel beams.

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

Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; Russian Foundation for Basic Research ProjectRussian Foundation for Basic Research (RFBR) [19-02-00055]
}
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20.

Kolovsky, A. R.
Open Fermi-Hubbard model: Landauer's versus master equation approaches / A. R. Kolovsky // Phys. Rev. B. - 2020. - Vol. 102, Is. 17. - Ст. 174310, DOI 10.1103/PhysRevB.102.174310. - Cited References: 22. - The author acknowledges discussions with D. N. Maksimov and financial support of Russian Science Foundation (RU) through Grant No. 19-12-00167 . - ISSN 2469-9950
Кл.слова (ненормированные):
Relaxation processes -- Fermi particles -- Landauer formalisms -- Master equations -- Non equilibrium -- Quantum transport -- Quasimomentum -- Rate of relaxation -- Simple modeling
Аннотация: We introduce a simple model for the quantum transport of Fermi particles between two contacts connected by a lead. It generalizes the Landauer formalism by explicitly taking into account the relaxation processes in the contacts. We calculate the contact resistance and nonequilibrium quasimomentum distribution of the carriers in the lead and show that they strongly depend on the rate of relaxation processes.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Коловский, Андрей Радиевич
}
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