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A Surface Wave Excitation by a Finite Phased Plane Waveguide Array with an Impedance Flange / Komarov S.A., Scherbinin V.V. // 12th International Conference on Mathematical Methods in Electromagnetic Theory, 2008, Odesa, Ukraine, 2008. pp. 314-316

Доп.точки доступа:
Komarov, S. A.; Scherbinin, V. V.; Щербинин, Всеволод Владиславович
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Modification of synthetic valleriite surface with gold nanoparticles: The roles of specific adsorption and zeta potential / A. A. Karacharov, M. N. Likhatski, R. V. Borisov [et al.] // Colloid J. - 2024. - Vol. 86, Is. 1. - P. 40-51, DOI 10.1134/S1061933X23601075. - Cited References: 69. - This work was supported by the Russian Science Foundation project no. 22-13-00321 . - ISSN 1061-933X. - ISSN 1608-3067
Кл.слова (ненормированные):
synthetic valleriites -- gold nanoparticles -- X-ray photoelectron spectroscopy -- transmission electron microscopy -- zeta potential
Аннотация: Layered two-dimensional materials, whose properties dramatically differ from their bulk precursors, are of great theoretical and applied importance. Recently, a layered 2D material, an analog of a natural mineral, valleriite, in which quasi-monoatomic Cu−Fe−S sheets alternate with brucite-like ones, has been prepared using a simple hydrothermal synthesis procedure. The features of the electronic structure of these materials make it possible to propose them as new materials for a wide field of applications such as (electro)photocatalysis, high-capacity batteries, etc. In this work, nanocomposite materials have been prepared via immobilization of gold nanoparticles (AuNPs) from citrate hydrosols on the surface of the synthesized valleriites having different compositions of hydroxide layers, which control the surface charge density. According to X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), energy-dispersive X-ray microanalysis (EDX), and selected area electron diffraction (SAED) data, AuNPs are immobilized on valleriite nanoflakes, which have lateral sizes of 150–200 nm and thicknesses of several tens of nanometers, as isolated metal nanoparticles with an average diameter of 11 nm. A small amount of aggregates indicates a high affinity of AuNPs for the valleriite surface. The amounts of immobilized gold are the same on all studied valleriites (~0.2%). This finding may be related to the simultaneous sorption of free citrate ions from the AuNP hydrosols, with these ions, according to zeta potential measurements, charging the surfaces of all studied valleriite samples to nearly the same negative value of –40 mV. According to the XPS data, the AuNPs immobilization markedly decreases the magnesium and oxygen contents on the surfaces of the synthesized valleriites due to the partial degradation/dissolution of the brucite layer. In addition, the amount of Fe3+ ions bound to OH groups decreases with a simultaneous increase in the fraction of Fe3+–O species. The TEM data have confirmed the preservation of the layered structure of valleriites after the immobilization of AuNPs.

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Публикация на русском языке Модификация поверхности синтетического валлериита наночастицами золота: роль специфической адсорбции и дзета-потенциала [Текст] / А. А. Карачаров, М. Н. Лихацкий, Р. В. Борисов [и др.]. - 13 с. // Коллоид. журн. - 2024. - Т. 86 № 1. - С. 45-57

Держатели документа:
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences”, 660036, Akademgorodok, Krasnoyarsk, Russia
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences”, 660036, Akademgorodok, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia

Доп.точки доступа:
Karacharov, A. A.; Likhatski, M. N.; Borisov, R. V.; Tomashevich, E. V.; Vorobyev, S. A.; Zharkov, S. M.; Жарков, Сергей Михайлович
}
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Gokhfeld, D. M.
Magnetic flux trapping in porous high-Tc superconductors / D. Gokhfeld // Phys. C: Supercond. Appl. - 2024. - Vol. 619. - Ст. 1354486, DOI 10.1016/j.physc.2024.1354486. - Cited References: 39 . - ISSN 0921-4534. - ISSN 1873-2143
Кл.слова (ненормированные):
Trapped magnetic field -- Pinning -- Critical current -- Magnetization -- YBCO -- REBCO -- Porosity -- Surface barrier
Аннотация: Porosity affects the properties of high-Tc superconductors and can improve their performance by enhancing oxygenation, cryocooling, etc. Among other factors, the presence of pores plays a significant role in the process of magnetic flux trapping. Relationships with the porosity manifest in the irreversibility field, the full penetration field, and the remnant magnetization of the samples. To account for the effect of porosity on the trapped magnetic flux into type-II superconductors, a simple toy model is suggested. Generally, as the porosity increases, the trapped flux and related parameters tend to diminish. However, in the case of microscopic samples, porosity can enhance magnetic flux trapping.

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

Доп.точки доступа:
Гохфельд, Денис Михайлович
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Magnetic collective state formation upon tuning the interparticle interactions in ensembles of ultrafine ferrihydrite nanoparticles / D. A. Balaev, A. A. Krasikov, Yu. V. Knyazev [et al.] // Nano-Struct. Nano-Objects. - 2024. - Vol. 37. - Ст. 101089, DOI 10.1016/j.nanoso.2023.101089. - Cited References: 93. - The authors thank M.N. Volochaev for the TEM investigations . - ISSN 2352-507X. - ISSN 2352-5088
Кл.слова (ненормированные):
Nanoparticle coating -- Superspin-glass state -- Superparamagnetic blocking -- Surface spin subsystem
Аннотация: The results of a study of the dynamic (alternating current magnetic susceptibility) and static magnetic properties, as well as 57Fe Mössbauer spectrometry and ferromagnetic resonance of two-line ferrihydrite nanoparticle systems with varying intensities of magnetic interparticle interactions are reported. The strength of the magnetic interparticle interactions has been tuned by coating (with various degrees of coating) the ferrihydrite particles (2–4 nm in size and an average size ∼2.7 nm) of the initial synthetic sample by arabinogalactan. Also, a biogenic ferrihydrite sample (an average particle size of 2-nm) with a natural organic coating was studied and it has the weakest magnetic interparticle interactions among of all the samples. Relaxation times of the particle’s magnetic moment were determined by the data of static and dynamic magnetic susceptibilities and from analysis of 57Fe Mössbauer spectrometry. Based on the temperature dependences of the relaxation times, it has been concluded that the predominantly collective processes of freezing of the particle magnetic moments occur under the action of the magnetic interparticle interactions. It is shown that an important role in these processes is played by a magnetic subsystem of the surface spins of the particles. The effect of the interplay between the surface spin and magnetic moment subsystems on the static magnetic properties (low-temperature magnetic hysteresis loops) and the parameters of the microwave absorption line under the magnetic resonance conditions is discussed.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Krasikov, A. A.; Красиков, Александр Александрович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Mikhlin, Yu. L.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Ladygina, V. P.; Stolyar, S. V.; Столяр, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович
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Investigation of surface magnetism in systems based on MnBi2Te4 using the magneto-optical Kerr effect / D. A. Glazkova, D. A. Estyunin, A. S. Tarasov [et al.] // Crystallogr. Rep. - 2024. - Vol. 69, Is. 1. - P. 79-84, DOI 10.1134/S1063774523601296. - Cited References: 39. - This study was supported by the St. Petersburg State University (project no. 94031444) and the Russian Science Foundation (grant no. 23-12-00016). The samples were synthesized within the project "State Assignment for the Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences and the Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences" . - ISSN 1063-7745. - ISSN 1562-689X
Аннотация: MnBi2Te4, Mn(Bi,Sb)2Te4, and MnBi2Te4(Bi2Te3)m (m ≥ 1) are assigned to magnetic topological insulators. Successful application of these materials in nanoelectronic devices calls for comprehensive investigation of their electronic structure and magnetic properties in dependence of the Bi/Sb atomic ratio and the number m of Bi2Te3 blocks. The magnetic properties of the surface of MnBi2Te4, MnBi4Te7, and Mn(Bi1-xSbx)2Te4 compounds (x = 0.43 and 0.32) have been studied using the magneto-optical Kerr effect. It is shown that the temperatures of magnetic transitions on the surface and in the bulk of MnBi4Te7 and Mn(Bi, Sb)2Te4 differ significantly.

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Публикация на русском языке Исследование поверхностного магнетизма в системах на основе MnBi2Te4 с использованием магнитооптического эффекта Керра [Текст] / Д. А. Глазкова, Д. А. Естюнин, А. С. Тарасов [и др.]. - 6 с. // Кристаллография. - 2024. - Т. 69 № 1. - С. 105-110

Держатели документа:
St. Petersburg State University, 198504, St. Petersburg, Russia
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, 660036, Krasnoyarsk, Russia
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, 660041, Krasnoyarsk, Russia
Krasnoyarsk State Agrarian University, Achinsk Branch, 662155, Achinsk, Russia
Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

Доп.точки доступа:
Glazkova, D. A.; Estyunin, D. A.; Tarasov, A. S.; Тарасов, Антон Сергеевич; Kosyrev, N. N.; Косырев, Николай Николаевич; Komarov, V. A.; Комаров, Василий Андреевич; Patrin, G. S.; Патрин, Геннадий Семёнович; Golyashov, V. A.; Tereshchenko, O. E.; Kokh, K. A.; Koroleva, A. V.; Shikin, A. M.
}
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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. - 2024. - Vol. 50, Is. 2. - P. 239-243, DOI 10.1134/S1063785023180189. - 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:
Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia
Federal Research Center KSC SB RAS, 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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Rational optimization of an aptamer specific to the surface of lung-cancer cells using mathematical modeling and small-angle X-ray scattering / P. V. Artyushenko, I. A. Shchugoreva, O. S. Kolovskaya [et al.] // Nanobiotechnology Rep. - 2024. - Vol. 19, Is. 2. - P. 183-187, DOI 10.1134/S2635167624600731. - Cited References: 14. - We express our gratitude to the staff of the National Research Center "Kurchatov Institute" for scientific support of the project, the Center for Collective Use "Molecular and Cellular Technologies" of Voino-Yasenetsky Krasnoyarsk State Medical University and the Joint Supercomputer Center of the Russian Academy of Sciences (JSSC RAS). - The study was supported by the Russian Science Foundation (grant no. 21-73-20240) . - ISSN 2635-1676. - ISSN 2635-1684
Аннотация: Aptamers, short oligonucleotides, are capable of high-affinity binding to targets due to their unique structure. Shortening the aptamer while maintaining the active site will increase the affinity and reduce the cost of synthesis. Using the example of the aptamer LC-224, a method for rational optimization of its length and verification of the validity of the developed approach is tested. The use of computer modeling and small-angle X‑ray scattering shows the possibility of optimizing the aptamer structure by removing nucleotides that do not participate in binding to the target. It is shown that truncation of the aptamer does not reduce the affinity and specificity of the DNA aptamer. Thus, theoretical and experimental studies demonstrate successful experience in optimizing the structure of a DNA aptamer by shortening it without compromising its affinity and specificity for its target.

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Публикация на русском языке Рациональная оптимизация аптамера, специфичного к поверхности раковых клеток легкого, с помощью математического моделирования и малоуглового рентгеновского рассеяния [Текст] / П. В. Артюшенко, И. А. Щугорева, О. С. Коловская [и др.]. - 6 с. // Рос. нанотехнол. - 2024. - Т. 19 № 3. - С. 295-300

Держатели документа:
Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Voino-Yasenetsky Krasnoyarsk State Medical University, 660022, Krasnoyarsk, Russia
Kryzhanovsky Krasnoyarsk Regional Clinical Oncology Dispensary, 660133, Krasnoyarsk, Russia

Доп.точки доступа:
Artyushenko, P. V.; Shchugoreva, I. A.; Kolovskaya, O. S.; Rogova, A. V.; Moryachkov, R. V.; Zabluda, V. N.; Заблуда, Владимир Николаевич; Zamay, T. N.; Krat, A. V.; Zukov, R. A.; Tomilin, F. N.; Томилин, Феликс Николаевич; Kichkailo, A. S.
}
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Adsorption properties and catalytic activity of Fe3O4-Ag nanostructures / O. S. Ivanova, Ch.-R. Lin, I. S. Edelman [et al.] // Appl. Surf. Sci. - 2024. - Vol. 665. - Ст. 160236, DOI 10.1016/j.apsusc.2024.160236. - Cited References: 48. - The work is supported by the Russian Science Foundation (project no. 23-22-10025, https://rscf.ru/project/ 23-22-10025/) and by the Krasnoyarsk Regional Fund of Science and Technology Support. The electron microscopy and EDS investigations were conducted in the SFU Joint Scientific Center. Magnetic investigations were carried out in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" . - ISSN 0169-4332. - ISSN 1873-5584
Кл.слова (ненормированные):
FeO-Ag nanostructures -- Nano-adsorbents -- Water purification methods -- Catalytic activity of nanoparticles
Аннотация: The morphology and magnetic properties as well as adsorption capacity and catalytic activity of Fe3O4-Ag nanoparticles synthesized by the solvothermal method were studied in dependence on the duration of the thermolysis process (3, 6, and 8 h). X-ray diffraction, transmission electron microscopy, and energy-dispersive spectroscopy measurements showed that the morphology of nanoparticles changed strongly as the duration of thermolysis increased. At 6 and 8 h duration, Fe3O4 nanocrystals grow and assemble into porous spherical globules with an Ag core (samples 2 and 3). These samples demonstrate high magnetization value and very low coercivity. The adsorption capacity of nanoparticles was studied with respect to two organic dyes: cationic methylene blue (MB) and anionic Congo red (CR). The particles showed preferential adsorption of the cationic dye. High catalytic activity towards four dyes: MB, methyl orange (MO), CR, and Rhodamine C (RhC) at the presence of NaBH4 is the remarkable property of these samples. The rate constant of the catalytic reaction was 1.4 min−1. Simultaneous exposure of CR and MO dyes to nanoparticles and NaBH4 caused their irreversible 100 % degradation while in the case of MB and RhC, a transition to their leuco form occurred.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Department of Applied Physics, National Pingtung University, Pingtung City 90003, Taiwan
Institute of Chemistry and Chemical Technology, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Lin, Chun-Rong; Edelman, I. S.; Эдельман, Ирина Самсоновна; Svetlitsky, E. S.; Светлицкий, Евгений Сергеевич; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Zharkov, S. M.; Жарков, Сергей Михайлович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Vorobyev, S. A.; Petrov, D. A.; Петров, Дмитрий Анатольевич; Lin, En-Szu
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Gokhfeld, D. M.
Surface barrier of holes drilled in a type-II superconductor / D. M. Gokhfeld // J. Supercond. Nov. Magn. - 2023. - Vol. 36, Is. 6. - P. 1481-1484, DOI 10.1007/s10948-023-06599-0. - Cited References: 21 . - ISSN 1557-1939. - ISSN 1557-1947
Кл.слова (ненормированные):
YBCO -- Critical state model -- Kim dependence -- Clem model -- Pinning -- Trapped magnetic flux -- Perforation
Аннотация: Holes drilled in a type-II superconductor trap the magnetic flux. Following Clem’s flux pinning model, we consider surface pinning as a mechanism for compressing the magnetic flux in the holes. Estimations of the trapped magnetic flux demonstrate that the holes with the diameter up to 2 mm are advantageous for bulk single-crystal REBCO samples. The REBCO films and tapes can be improved by the holes with diameter smaller than 10 μm.

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

Доп.точки доступа:
Гохфельд, Денис Михайлович
}
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10.

    Подопригора, Владимир Георгиевич.
    Определение характеристик поверхности диэлектрических пластин с помощью рассеяния света / В. Г. Подопригора, С. А. Раковская // Международ. журн. прикл. и фундамент. исслед. - 2023. - № 6. - С. 59-62, DOI 10.17513/mjpfi.13554. - Библиогр.: 5 . - ISSN 1996-3955
   Перевод заглавия: Determination of plates dielectrical surfaces charakteristics by light scatlering
Кл.слова (ненормированные):
неровность поверхности -- шероховатость -- сверхгладкие пластины -- корреляционная функция -- индикатриса рассеяния -- roughness parameters -- surface -- correlation function -- dielectrical plates -- scattering indicatrix
Аннотация: В работе предложен новый способ определения параметров шероховатостей и корреляционной функции (КФ) сверхгладких диэлектрических пластин. Способ основан на нахождении из экспериментальной индикатрисы рассеивания света коэффициентов разложения (КФ) в ряд по системе ортогональных функций с последующим вычислением среднеквадратичных отклонений высот неровностей поверхности σ и периода корреляции Т. Отличительными особенностями метода являются: 1) отсутствие неоднозначности, возникающей при подгонке к экспериментальной кривой рассеяния теоретических зависимостей с разными корреляционными функциями, которые сами зависят от параметров шероховатостей; 2) возможность избежать необходимости измерять индикатрису рассеяния во всей полусфере над образцом. Данный способ определения КФ и параметров шероховатости поверхности может применяться для любого типа границ раздела при соблюдении критерия Рэлея, определяющего степень неровности поверхности отражения по отношению к длине волны падающего излучения. Поэтому объектами исследования могут быть не только поверхности с нанометровыми шероховатостями, облучаемые лазерным светом, но и, например, земные покровы при их дистанционном зондировании радиосигналами навигационных спутников. Для полированных пластин кварца получены значения параметров поверхностей, близкие к аналогичным величинам, измеренным независимо на лазерном интерференционном профилометре другими авторами.
The paper proposes a new method for determining the roughness parameters and the correlation function (CF) of supersmooth dielectric plates. The method is based on finding the expansion coefficients (CF) from the experimental light scattering indicatrix in a series according to a system of orthogonal functions, followed by the calculation of the standard deviations of the surface irregularity heights σ and the correlation period Т. Distinctive features of the method are: 1) the absence of ambiguity that arises when fitting theoretical dependences with different correlation functions, which themselves depend on the roughness parameters, to the experimental scattering curve; 2) the possibility of avoiding the need to measure the scattering indicatrix in the entire hemisphere above the sample. This method for determining the CF and surface roughness parameters can be used for any type of interface, subject to the Rayleigh criterion, which determines the degree of roughness of the reflection surface with respect to the wavelength of the incident radiation. Therefore, the objects of study can be not only surfaces with nanometer roughness irradiated by laser light, but also, for example, earth covers during their remote sensing by radio signals from navigation satellites. For polished quartz plates, the values of the surface parameters were obtained close to similar values measured independently on a laser interference profilometer by other authors.

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

Доп.точки доступа:
Раковская, С. А.; Podoprigora, V. G.
}
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11.

Combined porous-monolithic TiNi materials surface-modified with electron beam for new-generation rib endoprostheses / A. V. Shabalina, S. G. Anikeev, S. A. Kulinich [et al.] // J. Funct. Biomater. - 2023. - Vol. 14, Is. 5. - Ст. 277, DOI 10.3390/jfb14050277. - Cited References: 57. - The study was supported by the Russian Science Foundation (grant no. 19-79-10045). https://rscf.ru/project/19-79-10045/ . - ISSN 2079-4983
Кл.слова (ненормированные):
TiNi -- rib endoprostheses -- porous coating -- powder metallurgy -- high-current pulsed electron beam -- structure -- surface modification -- electrochemical corrosion -- biocompatibility
Аннотация: TiNi alloys are very widely used materials in implant fabrication. When applied in rib replacement, they are required to be manufactured as combined porous-monolithic structures, ideally with a thin, porous part well-adhered to its monolithic substrate. Additionally, good biocompatibility, high corrosion resistance and mechanical durability are also highly demanded. So far, all these parameters have not been achieved in one material, which is why an active search in the field is still underway. In the present study, we prepared new porous-monolithic TiNi materials by sintering a TiNi powder (0–100 μm) on monolithic TiNi plates, followed by surface modification with a high-current pulsed electron beam. The obtained materials were evaluated by a set of surface and phase analysis methods, after which their corrosion resistance and biocompatibility (hemolysis, cytotoxicity, and cell viability) were evaluated. Finally, cell growth tests were conducted. In comparison with flat TiNi monoliths, the newly developed materials were found to have better corrosion resistance, also demonstrating good biocompatibility and potential for cell growth on their surface. Thus, the newly developed porous-on-monolith TiNi materials with different surface porosity and morphology showed promise as potential new-generation implants for use in rib endoprostheses.

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Держатели документа:
Laboratory of Medical Materials Science, Tomsk State University, 634050 Tomsk, Russia
Institute of Physics, Kazan Federal University, 420008 Kazan, Russia
Research Institute of Science and Technology, Tokai University, Hiratsuka 259-1292, Kanagawa, Japan
Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
Tomsk Scientific Center, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, Russia
Kirensky Institute of Physics, Federal Research Center, KSC Siberian Branch Russian Academy of Science, 660036 Krasnoyarsk, Russia
School of Engineering Physics and Radio Electronics, Siberian Federal University, 660041 Krasnoyarsk, Russia
Department of Morphology and Physiology of the Medical Institute, Surgut State University, 628403 Surgut, Russia

Доп.точки доступа:
Shabalina, A. V.; Anikeev, S. G.; Kulinich, S. A.; Artyukhova, N. V.; Vlasov, V. A.; Kaftaranova, M. I.; Hodorenko, V. N.; Yakovlev, E. V.; Pesterev, E. A.; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Volochaev, M. N.; Волочаев, Михаил Николаевич; Pakholkina, S.; Mamazakirov, O.; Stolyarov, V. V.; Mokshin, A. V.; Gunther, V. E.
}
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12.

    Modification of polyhydroxyalkanoates polymer films surface of various compositions by laser processing / E. I. Shishatskaya, N. O. Zhila, A. E. Dudaev [et al.] // Polymers. - 2023. - Vol. 15, Is. 3. - Ст. 531, DOI 10.3390/polym15030531. - Cited References: 91. - The study was funded by the State Assignment of the Ministry of Science and Higher Education of the Russian Federation (Project No. 0287-2021-0025) . - ISSN 2073-4360
   Перевод заглавия: Модификация поверхности полимерных пленок полигидроксиалканоатов различного состава методом лазерной обработки
Кл.слова (ненормированные):
PHAs -- polymer films -- CO2 laser -- laser processing -- SEM -- AFM -- water contact angles -- fibroblast NIH 3T3 -- MTT test
Аннотация: The results of surface modification of solvent casting films made from polyhydroxyalkanoates (PHAs) of various compositions are presented: homopolymer poly-3-hydroxybutyrate P(3HB) and copolymers comprising various combinations of 3-hydroxybutyrate (3HB), 3-hydroxyvalerate (3HV), 4-hydroxybutyrate(4HB), and 3-hydroxyhexanoate (3HHx) monomers treated with a CO2 laser in continuous and quasi-pulsed radiation modes. The effects of PHAs film surface modification, depending on the composition and ratio of monomers according to the results of the study of SEM and AFM, contact angles of wetting with water, adhesion and growth of fibroblasts have been revealed for the laser radiation regime used. Under continuous irradiation with vector lines, melted regions in the form of grooves are formed on the surface of the films, in which most of the samples have increased values of the contact angle and a decrease in roughness. The quasi-pulse mode by the raster method causes the formation of holes without pronounced melted zones, the total area of which is lower by 20% compared to the area of melted grooves. The number of viable fibroblasts NIH 3T3 on the films after the quasi-pulse mode is 1.5–2.0 times higher compared to the continuous mode, and depends to a greater extent on the laser treatment mode than on the PHAs’ composition. The use of various modes of laser modification on the surface of PHAs with different compositions makes it possible to influence the morphology and properties of polymer films in a targeted manner. The results that have been obtained contribute to solving the critical issue of functional biodegradable polymeric materials.

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Держатели документа:
Department of Medical Biology, School of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodnyi Av., 79, 660041 Krasnoyarsk, Russia
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
Chemistry Engineering Centre, ITMO University, Kronverkskiy Prospekt, 49A, 197101 Saint Petersburg, Russia
Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodnyi Av., 79, 660041 Krasnoyarsk, Russia
L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, 660036 Krasnoyarsk, Russia
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 660041 Krasnoyarsk, Russia

Доп.точки доступа:
Shishatskaya, Ekaterina I.; Zhila, Natalia O.; Dudaev, Alexey E.; Nemtsev, I. V.; Немцев, Иван Васильевич; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Volova, Tatiana G.
}
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13.

Functionalized magnetite nanoparticles: Characterization, bioeffects, and role of reactive oxygen species in unicellular and enzymatic systems / A. G. Kicheeva, E. S. Sushko, L. S. Bondarenko [et al.] // Int. J. Mol. Sci. - 2023. - Vol. 24, Is. 2. - Ст. 1133, DOI 10.3390/ijms24021133. - Cited References: 125. - This research was funded by Russian Science Foundation, N 22-73-10222 . - ISSN 1661-6596. - ISSN 1422-0067
Кл.слова (ненормированные):
magnetite nanoparticles -- surface modification -- humic acids -- organosilane -- reactive oxygen species -- toxicity -- bioluminescence assay -- bacteria -- enzymes -- oxidative stress -- prooxidant -- ferroptosis
Аннотация: The current study evaluates the role of reactive oxygen species (ROS) in bioeffects of magnetite nanoparticles (MNPs), such as bare (Fe3O4), humic acids (Fe3O4-HA), and 3-aminopropyltriethoxysilane (Fe3O4-APTES) modified MNPs. Mössbauer spectroscopy was used to identify the local surrounding for Fe atom/ions and the depth of modification for MNPs. It was found that the Fe3O4-HA MNPs contain the smallest, whereas the Fe3O4-APTES MNPs contain the largest amount of Fe2+ ions. Bioluminescent cellular and enzymatic assays were applied to monitor the toxicity and anti-(pro-)oxidant activity of MNPs. The contents of ROS were determined by a chemiluminescence luminol assay evaluating the correlations with toxicity/anti-(pro-)oxidant coefficients. Toxic effects of modified MNPs were found at higher concentrations (>10−2 g/L); they were related to ROS storage in bacterial suspensions. MNPs stimulated ROS production by the bacteria in a wide concentration range (10−15–1 g/L). Under the conditions of model oxidative stress and higher concentrations of MNPs (>10−4 g/L), the bacterial bioassay revealed prooxidant activity of all three MNP types, with corresponding decay of ROS content. Bioluminescence enzymatic assay did not show any sensitivity to MNPs, with negligible change in ROS content. The results clearly indicate that cell-membrane processes are responsible for the bioeffects and bacterial ROS generation, confirming the ferroptosis phenomenon based on iron-initiated cell-membrane lipid peroxidation.

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Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Physics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Department of General Engineering, Moscow Aviation Institute, Moscow, 125993, Russian Federation
Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russian Federation
Sklifosovsky Research Institute for Emergency Medicine, Moscow, 129010, Russian Federation
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, 142432, Russian Federation
Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, P.le Fermi, 1, Portici, 80055, Italy
Biophysics Department, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Kicheeva, A. G.; Sushko, E. S.; Сушко, Екатерина Сергеевна; Bondarenko, L. S.; Kydralieva, K. A.; Pankratov, D. A.; Tropskaya, N. S.; Dzeranov, A. A.; Dzhardimalieva, G. I.; Zarrelli, M.; Kudryasheva, N. S.
}
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14.

The manifestation of surface and size effects in the magnetic properties of ε-Fe2O3 nanoparticles. (Brief overview) / D. A. Balaev, A. A. Dubrovskii, Yu. V. Knyazev [et al.] // Phys. Solid State. - 2023. - Vol. 65, Is. 6. - P. 938-946, DOI 10.21883/PSS.2023.06.56105.12H. - Cited References: 66 . - ISSN 1063-7834. - ISSN 1090-6460
Кл.слова (ненормированные):
iron oxide ε-Fe2O3 -- nanoparticles -- size effect -- surface magnetic anisotropy
Аннотация: Polymorphic modification of iron oxide, known as ε-Fe2O3, exists only in the form of nanoparticles with characteristic sizes up to several tens of nanometers. Particles of these sizes exhibit a large coercive force, about 20 kOe at room temperature. In the temperature range of 80–150 K, a magnetic transition occurs in ε-Fe2O3, accompanied by a sharp decrease in the coercive force. At the same time, there are significant differences in the magnetic behavior of "large" (~20 nm) particles and ultra-small particles (up to 6 nm). A number of experimental facts indicate the manifestation of size effects that lead to a change in the magnetic structure in particles of these sizes. In addition, a surface effect is also manifested for such particles - a significant contribution to the magnetic behavior is governed by surface magnetic anisotropy. In this paper, a brief review of the manifestation of these size and surface effects in the magnetic properties of ε-Fe2O3 nanoparticles is carried out.

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Публикация на русском языке Проявление поверхностных и размерных эффектов в магнитных свойствах наночастиц ε-Fe2O3. (Краткий обзор) [Текст] / Д. А. Балаев, А. А. Дубровский, Ю. В. Князев [и др.]. - 10 с. // Физ. твердого тела. - 2023. - Т. 65 Вып. 6. - С. 979-988

Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
Институт катализа им. Г.К. Борескова СО РАН, Новосибирск, Россия

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Dubrovskii, A. A.; Дубровский, Андрей Александрович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Semenov, S. V.; Семенов, Сергей Васильевич; Kirillov, V. L.; Martianov, O. N.; Nanophysics and Nanoelectronics, International Symposium(27 ; 13-16 March 2023 ; Nizhny Novgorod, Russia)
}
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15.

    Ivanov, D. A.
    Changes of the Fermi surface topology in the three-orbital model for iron pnictides with the spin-orbit coupling / D. A. Ivanov, Y. N. Togushova, M. M. Korshunov // J. Sib. Fed. Univ. Math. Phys. - 2023. - Vol. 16, Is. 6. - P. 795-803 ; Журн. СФУ. Матем. и физ. - Cited References: 28 . - ISSN 1997-1397. - ISSN 2313-6022
   Перевод заглавия: Изменение топологии поверхности Ферми в трехорбитальной модели пниктидов железа со спин-орбитальным взаимодействием
Кл.слова (ненормированные):
Fe-based superconductors -- spin-orbit coupling -- band structure -- Fermi surface -- сверхпроводники на основе железа -- спин-орбитальное взаимодействие -- зонная структура -- поверхность Ферми
Аннотация: Effect of the spin-orbit coupling on the band structure and the Fermi surface of the three-orbital model is studied. The inter-orbital part of the model is reformulated to fully conform with the iron lattice symmetry. Because there are two iron ions in the unit cell, we introduce the intra-and inter-ion spin-orbit coupling constants to separate the effect of the related couplings on the band structure and the Fermi surface. Both the intra-and inter-ion parts lift the degeneracy of some bands at the Γ = (0, 0) point and the splitting of bands along the (0, π) ‒ (π, π) direction of the Brillouin zone. We show that the inter-ion part of the spin-orbit coupling leads to the topological change of the Fermi surface — the splitting of two Fermi surface sheets around the M = (π, π) point.
Изучено влияние спин-орбитального взаимодействия на зонную структуру и поверхность Ферми в трехорбитальной модели. Межорбитальная часть модели изменена для полного соответствия с симметрией решетки железа. Из-за наличия двух ионов железа в элементарной ячейке мы вводим внутри- и межионную константы спин-орбитального взаимодействия для разделения эффектов соответствующих взаимодействий на зонную структуру и поверхность Ферми. И внутри, и межионная части снимают вырождение некоторых зон в точке Γ = (0, 0) и вырождение вдоль направления (0, π) − (π, π) зоны Бриллюэна. Показано, что межионная часть спин-орбитального взаимодействия приводит к изменению топологии поверхности Ферми, а именно к разделению листов поверхности Ферми вблизи точки M = (π, π).

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

Доп.точки доступа:
Togushova, Y. N.; Korshunov, M. M.; Коршунов, Максим Михайлович

}
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16.

    Кошелев, А. А.
    Исследование процессов эпитаксиального роста германия на поверхности Fe3Si/Si(111) / А. А. Кошелев, И. А. Яковлев, С. Н. Варнаков. - Электрон. текстовые дан. // Решетневские чтения : материалы XXVII Междунар. науч.-практич. конф., посв. памяти генер. констр. ракетно-космич. систем акад. М. Ф. Решетнева : в 2-х ч. - 2023. - Ч. 1, Секция : Наноматериалы, нанотехнологии и информационные системы в аэрокосмической отрасли. - С. 591-593. - Библиогр.: 6
   Перевод заглавия: Investigation of the epitaxial growth processes of germanium on the Fe3Si/Si(111) surface

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

Доп.точки доступа:
Яковлев, Иван Александрович; Yakovlev, I. A.; Варнаков, Сергей Николаевич; Varnakov, S. N.; "Решетневские чтения", международная научно-практическая конференция(27 ; 2023 ; нояб. ; 8-10 ; Красноярск); Сибирский государственный университет науки и технологий им. акад. М. Ф. Решетнева; Информационные спутниковые системы им. М.Ф. Решетнева, ОАО; "Красноярский машиностроительный завод", ОАОФедеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук"
}
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17.

Auger electron spectroscopy of the air-exposed (Cr0.5Mn0.5)2GaC MAX film surface / T. A. Andryushchenko, S. A. Lyashchenko, A. V. Lukyanenko [et al.] // Tech. Phys. Lett. - 2023. - Vol. 49, Is. 7. - P. 59-64, DOI 10.61011/TPL.2023.07.56448.19430. - Cited References: 16. - This study was supported by a grant from the Russian Science Foundation, project № 21-12-00226 (http://rscf.ru/project/21-12-00226/) . - ISSN 1063-7850. - ISSN 1090-6533
Кл.слова (ненормированные):
MAX phases -- Auger electron spectroscopy -- epitaxial films -- ion etching
Аннотация: We have analyzed chemical bonding of atmospheric oxygen with chromium and manganese on the epitaxial MAX-phase (Cr0.5Mn0.5)2GaC surface using Auger electron spectroscopy combined with ion etching. It was found that the system has a specific anisotropic oxidation where oxygen atoms bind to chromium and manganese ones more actively at the faces of layered MAX phase crystallites in contrast to the (0001) basal plane. At the same time, the dominance of the Mn–O chemical bonding over Cr–O is observed on the latter.

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Публикация на русском языке Оже-электронная спектроскопия поверхности MAX-пленок (Cr0.5Mn0.5)2GaC, окисленной в результате хранения на воздухе [Текст] / Т. А. Андрющенко, С. А. Лященко, А. В. Лукьяненко [и др.] // Письма в ЖТФ. - 2023. - Т. 49 Вып. 14. - С. 22-27

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

Доп.точки доступа:
Andryushchenko, T. A.; Андрющенко, Татьяна Александровна; Lyashchenko, S. A.; Лященко, Сергей Александрович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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18.

Описание изобретения к патенту 2799387


    Сканирующая антенна поверхностной волны / К. В. Лемберг, Д. А. Шабанов, С. Б. Глыбовский [и др.]. - № 2022135118 ; Заявл. 29.12.2022 ; Опубл. 05.07.2023 // Изобретения. Полезные модели : офиц. бюл. Фед. службы по интеллектуал. собственности (Роспатент). - 2023. - № 19
   Перевод заглавия: Surface wave scanning antenna
Аннотация: Изобретение относится к апертурным антеннам и предназначено для приема и передачи электромагнитных волн. Устройство состоит из возбудителя, формирующего поверхностную волну, и открытой периодической замедляющей структуры, являющейся излучающей апертурой антенны. Замедляющая структура представляет собой металлическую гофрированную поверхность с периодическим профилем гофрирования, над которой расположен перемещающийся вдоль поверхности лист иэлектрика с нанесенными на него металлическими полосковыми проводниками одинаковой ширины. Период расположения полосковых проводников совпадает с периодом гофрирования металлической поверхности. Перемещение листа диэлектрика происходит в направлении, перпендикулярном направлению проводников. При сдвиге листа диэлектрика на расстояние не более, чем половина периода гофрирования металлической поверхности, главный лепесток диаграммы направленности антенны изменяет направление в диапазоне углов, зависящем от параметров замедляющей структуры. Изобретение обеспечивает изменения направления главного лепестка диаграммы направленности. 6 ил.

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

Доп.точки доступа:
Лемберг, Константин Вячеславович; Lemberg, K. V.; Шабанов, Дмитрий Александрович; Shabanov, D. A.; Глыбовский, Станислав Борисович; Боев, Никита Михайлович; Boev, N. M.; Беляев, Борис Афанасьевич; Belyaev, B. A.; Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук"; Федеральная служба по интеллектуальной собственности (Роспатент); Федеральный институт промышленной собственности
}
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19.

Interaction of satellite navigation signals with forest and snow-ice layers / M. Y. Reushev, V. G. Podoprigora, D. S. Makarov [et al.] // Russ. Phys. J. - 2023. - Vol. 66, Is. 6. - P. 706-711, DOI 10.1007/s11182-023-02996-z. - Cited References: 8 . - ISSN 1064-8887. - ISSN 1573-9228
Кл.слова (ненормированные):
global navigation satellite system reflectometry -- navigation signal -- interference -- multipath echoes -- surface layers
Аннотация: The paper studies parameters of the snow-ice cover and forest ground determined by the integrated approach based on the global navigation satellite system reflectometry. Experimental data on the amplitude and time response of satellite navigation signals are processed by fast Fourier transform and then analyzed using mathematical methods based on the multipath echoes model in terms of geometrical optics. Using a combination of reflectometry and numerical simulation of the surface layers based on local weather data, it is possible to evaluate not only the current state of these layers, but also predict their dynamic development.

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Держатели документа:
Krasnoyarsk Research Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Computational Modeling of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Reushev, M. Y.; Podoprigora, V. G.; Подопригора, Владимир Георгиевич; Makarov, D. S.; Kharlamov, D. V.; Vasiliev, E. V.
}
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20.

    Анализ электронной структуры поверхности эпитаксиальной max-фазы (Cr0,5Mn0,5)2GaC методом спектральной эллипсометрии / С. А. Лященко, В. С. Жандун, Т. А. Андрющенко [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. 165-166, DOI 10.26516/978-5-9624-2178-0.2023.1-207. - Библиогр.: 4 . - ISBN 978-5-962402178-0
   Перевод заглавия: Electronic structure analysis of (Cr0,5Mn0,5)2GaC epitaxial max-phase surface by spectral ellipsometry

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

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.; Лященко, Сергей Александрович; Lyashchenko, S. A.; Жандун, Вячеслав Сергеевич; Zhandun, V. S.; Андрющенко, Татьяна Александровна; Шевцов, Дмитрий Валентинович; Shevtsov, D. V.; Максимова, Ольга Александровна; Maximova, O. A.; Варнаков, Сергей Николаевич; Varnakov, S. N.; Овчинников, Сергей Геннадьевич; 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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