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Recording of nitrogen-contained carbon-helium plasma parameters by emission spec?troscopy method and investigation of obtained nanosized substances [Text] / I. V. Osipova // One day conference / School for young scientists "Diagnostics of carbon nanostructures". - P. 22

Доп.точки доступа:
Osipova, I.V.; "Diagnostics of carbon nanostructures", One day conference, School for young scientists(2009 ; St. Petersburg)
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    Resistive switching properties of a nanostructured layer of mixed ZrO2 phases obtained in low-pressure arc discharge plasma / I. V. Karpov, L. Yu Fedorov, A. K. Abkaryan [et al.] // Vacuum. - 2024. - Vol. 227. - Ст. 113375, DOI 10.1016/j.vacuum.2024.113375. - Cited References: 34. - The work was performed with a support of the grant of the Russian Science Foundation (Project No. 24-29-00374, https://rscf.ru/project/24-29-00374/) . - ISSN 0042-207X. - ISSN 1879-2715
   Перевод заглавия: Резистивные коммутационные свойства наноструктурированного слоя смешанных фаз ZrO2, полученного в плазме дугового разряда низкого давления
Кл.слова (ненормированные):
Zirconium oxide -- Vacuum arc -- Physical vapor deposition -- Phase stability
Аннотация: The controlled vacuum-arc synthesis of zirconium dioxide (ZrO2) nanoparticles is considered, which makes it possible to regulate the percentage ratio of the monoclinic and tetragonal phases. The samples were characterized using XRD analysis, SEM, HRTEM analysis, FT-IR analysis, TG/DTA analysis and EPR spectroscopy. It has been established that the formation of the tetragonal phase is associated with the formation of a large number of oxygen vacancies formed due to high-speed quenching of nanoparticles. Reducing the operating gas pressure in a vacuum chamber from 180 Pa to 30 Pa makes it possible to obtain nanoparticles up to 2 nm in size. The synthesized ZrO2 nanoparticles do not contain foreign impurities and when heated, the weight loss is up to 7 %. The process of local resistive switching in the contact of an atomic force microscope (AFM) probe to a nanostructured ZrO(2-x) layer on a conducting substrate has been studied. Cyclic current-voltage characteristics demonstrate the existence of stable states of high and low resistance, switched by changing the polarity of the applied voltage. The coexistence of the m- and t-ZrO2 phases (and the resulting oxygen nonstoichiometry in the interboundary regions) provides conditions for the formation/destruction of a filament from oxygen vacancies, which determine the conductivity of the dielectric in the LRS state.

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Держатели документа:
Siberian Federal University, 660041, Krasnoyarsk, Russian Federation
Federal Research Center Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, 660036, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Karpov, I.V.; Fedorov, L. Yu; Abkaryan, A.K.; Zharkov, S. M.; Жарков, Сергей Михайлович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Nemtsev, I. V.; Немцев, Иван Васильевич; Irtyugo, L.A.
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Synthesis of Ni nanoclusters supported on diamond by plasma technique and their electrochemical properties / N. S. Nikolaev, V. G. Isakova, N. G. Vnukova [et al.] // Diam. Relat. Mater. - 2024. - Vol. 142. - Ст. 110844, DOI 10.1016/j.diamond.2024.110844. - Cited References: 35 . - ISSN 0925-9635. - ISSN 1879-0062
Кл.слова (ненормированные):
High pressure – high temperature (HTHP) diamond -- Nickel plasma -- Cyclic voltammetric -- Electrocatalytic activity -- Methanol -- Paracetamol
Аннотация: In this study, particles of synthetic undoped diamond (DN) obtained via the high pressure – high temperature method were coated with a nickel shell using metallic nickel plasma in a two-jet plasma generator with gas vortex and magnetic flux stabilization. Through the use of scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy, we observed the formation of a nickel diamond composite with a core-shell structure, where DN serves as the core and Ni nanoclusters form the shell (DN@Ni). The results of voltammetric analysis indicated that DN@Ni, when deposited on a graphite electrode, exhibited significant electrocatalytic activity in the oxidation of methanol and paracetamol in an alkaline electrolyte.

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Держатели документа:
Kirensky Institute of Physics, FSBSI "Federal Research Center "Krasnoyarsk Science Center SB RAS", Akademgorodok 50/38, Krasnoyarsk 660036, Russia
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Academician Kirensky str., 28, Krasnoyarsk 660074, Russia
Institute of Chemistry and Chemical Technology of the Siberian Branch of the Russian Academy of Sciences, FSBSI "Federal Research Center "Krasnoyarsk Science Center SB RAS", Akademgorodok 50/24, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Nikolaev, N. S.; Николаев, Никита Сергеевич; Isakova, V. G.; Исакова, Виктория Гавриловна; Vnukova, N. G.; Внукова, Наталья Григорьевна; Elesina, V. I.; Елесина, Виктория Игоревна; Glushenko, G. A.; Глущенко, Гарий Анатольевич; Tomashevich, Y. V.; Томашевич, Евгений Владимирович; Churilov, G. N.; Чурилов, Григорий 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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Investigation of microstructural features, phase composition, and magnetic characteristics of YBCO-based composites and additives of CuO non-superconducting component prepared in low-pressure arc discharge plasma / I. V. Karpov, A. V. Ushakov, A. A. Lepeshev [et al.] // Inorg. Mater.: Appl. Res. - 2021. - Vol. 12, Is. 1. - P. 142-146, DOI 10.1134/S2075113321010172. - Cited References: 12. - This work was supported by the Russian Science Foundation (project no. 16-19-10054) . - ISSN 2075-1133
Кл.слова (ненормированные):
low-pressure arc discharge plasma -- CuO nanopowder -- pinning centers -- high-temperature superconductor
Аннотация: A method making it possible to form HTS ceramics of non-superconducting coating consisting of self-organizing CuO crystals, whose sizes are less than the coherence length, i.e., within several tens of nanometers, has been developed. It has been shown that the combination of self-organizing structures in the form of whiskers and nanoparticles which arise as a result of combined sintering of YBa2Cu3O(7–x) powders and electric arc CuO nanopowders results in a significant increase in the current density and appearance of peak effect at high magnetic fields. Very high current density arises from the complex vortex pinning, where whisker defects provide high pinning energy and nanoparticles suppress flux creep. The morphology of such structures can be controlled by a simple change in the concentration of nanodisperse additives. It has been shown that 20 wt % of CuO additive is optimal.

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Публикация на русском языке Исследование микроструктурных особенностей, фазового состава и магнитных свойств композитов на основе YBCO и добавок несверхпроводящего компонента СuО, полученного в плазме дугового разряда низкого давления [Текст] / И. В. Карпов, А. В. Ушаков, А. А. Лепешев [и др.] // Материаловедение. - 2020. - № 6. - С. 27-32

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

Доп.точки доступа:
Karpov, I. V.; Ushakov, A. V.; Lepeshev, A. A.; Demin, V. G.; Fedorov, L. Y.; Goncharova, E. A.; Zeer, G. M.; Zharkov, S. M.; Жарков, Сергей Михайлович; Akbaryan, A. K.
}
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    Simulation of fullerene formation in a carbon-helium plasma / P. V. Novikov, I. V. Osipova, G. N. Churilov, A. I. Dudnik // Fuller. Nanotub. Carbon Nanostruct. - 2021. - Vol. 29, Is. 5. - P. 337-342, DOI 10.1080/1536383X.2020.1842738. - Cited References: 22 . - ISSN 1536-383X
   Перевод заглавия: Моделирование образования фуллерена в углеродно-гелиевой плазме
Кл.слова (ненормированные):
Fullerene formation -- kinetic model -- carbon clusters -- Kinetic modeling -- Fullerenes
Аннотация: A kinetic model of fullerene formation in the carbon-helium plasma of an arc discharge was proposed. In the model, in addition to the coagulation of carbon clusters, the cluster isomerization and their cooling with a buffer gas were taken into account. The simulation results of the fullerene formation are in qualitatively agreement with the experimental data, i.e., the fraction of higher fullerenes increases at high pressures in the fullerene mixture.

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

Доп.точки доступа:
Novikov, P. V.; Osipova, I. V.; Осипова, Ирина Владимировна; Churilov, G. N.; Чурилов, Григорий Николаевич; Dudnik, A. I.; Дудник, Александр Иванович
}
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    Исследование микроструктурных особенностей, фазового состава и магнитных свойств композитов на основе YBCO и добавок несверхпроводящего компонента СuО, полученного в плазме дугового разряда низкого давления / И. В. Карпов, А. В. Ушаков, А. А. Лепешев [и др.] // Материаловедение. - 2020. - № 6. - С. 27-32, DOI 10.31044/1684-579X-2020-0-6-27-32. - Библиогр.: 12 . - ISSN 1684-579X
   Перевод заглавия: Investigation of microstructural features, phase composition and magnetic properties of YBCO-based composites and additives of nonsuperconducting component cuo obtained in low-pressure arc plasma
Кл.слова (ненормированные):
плазма дугового разряда низкого давления -- нанопорошок CuO -- центры пиннинга -- высокотемпературный сверхпроводник -- low-pressure arc plasma -- CuO nanopowder -- Pinning center -- high-temperature superconductor
Аннотация: Разработан метод, позволяющий формировать на поверхности дисперсных частиц порошка ВТСП-керамики несверхпроводящего покрытия, состоящего из самоорганизующихся кристаллов CuO, размеры которых менее длины когерентности, т.е. в пределах нескольких десятков нанометров. Показано, что сочетание самоорганизующихся структур в виде «усов» и наночастиц, появляющихся в результате совместного спекания порошков YBa2Cu3O7-x и электродуговых нанопорошков CuO, приводит к существенному увеличению плотности тока и появлению пик-эффекта в области сильных магнитных полей. Очень высокая плотность тока возникает из сложного пиннинга вихрей, где дефекты в виде «усов» обеспечивают большую энергию пиннинга, а наночастицы подавляют крип потока. Регулирование морфологии подобных структур возможно простым изменением концентрации нанодисперсных добавок. Показано, что наиболее оптимальной является добавка CuO в количестве 20% (мас.).
A method has been developed, that allows one to form a non-superconducting coating on the surface of dispersed particles of an HTSC ceramic powder consisting of self-organizing CuO crystals whose sizes are less than the coherence length, i.e. within a few tens of nanometers. It was found out that the combination of self-organizing structures in the form of «whiskers» and nanoparticles resulting from the joint sintering of YBa2Cu3O7-x powders and CuO nanocrystals led to a significant increase in current density and the appearance of a peak effect in the region of strong magnetic fields. A very high current density arises from complex pinning of vortices, where defects in the form of «whiskers» provide a large pinning energy, and nanoparticles suppress creep flux. Morphology of such structures can be regulated by a simple change in the concentration of nanodispersed additives. It was determined that the addition of CuO in an amount of 20 wt.% was the most optimal.

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Переводная версия Investigation of microstructural features, phase composition, and magnetic characteristics of YBCO-based composites and additives of CuO non-superconducting component prepared in low-pressure arc discharge plasma [Текст] / I. V. Karpov, A. V. Ushakov, A. A. Lepeshev [et al.] // Inorg. Mater.: Appl. Res. - 2021. - Vol. 12 Is. 1.- P.142-146

Держатели документа:
Институт физики им. Л. В. Киренского СО РАН
Сибирский федеральный университет
Федеральный исследовательский центр «Красноярский научный центр Сибирского отделения РАН»

Доп.точки доступа:
Карпов, И. В.; Ушаков, А. В.; Лепешев, Анатолий Александрович; Дёмин, В. Г.; Федоров, Л. Ю.; Гончарова, Е. А.; Зеер, Г. М.; Жарков, Сергей Михайлович; Zharkov, S. M.; Абкарян, А. К.
}
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    The effect of microstructural features on the ferromagnetism of nickel oxide nanoparticles synthesized in a low-pressure arc plasma / A. V. Ushakov, I. V. Karpov, L. Y. Fedorov [et al.] // Physica E. - 2020. - Vol. 124. - Ст. 114352, DOI 10.1016/j.physe.2020.114352. - Cited References: 31. - The work was performed with a support of the grant of the Russian Science Foundation (Project No. 16-19-10054 ). The electron microscopy investigations were conducted in the SFU Joint Scientific Center supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation . - ISSN 1386-9477
   Перевод заглавия: Влияние особенностей микроструктуры на ферромагнетизм наночастиц оксида никеля, синтезированных в дуговой плазме низкого давления
Кл.слова (ненормированные):
Nickel oxide -- Nanoparticles -- Band gap -- Magnetic properties
Аннотация: Nickel oxide nanoparticles were first synthesized by sputtering high-purity nickel in an oxygen plasma of a low-pressure arc discharge. The structure, morphology, and optical and magnetic properties of NiO nanoparticles were studied by XRD, TEM, FTIR, UV-VIS, and VSM. TEM images showed that the obtained NiO nanoparticles have a narrow particle size distribution and an average particle size of 12 nm. The XRD results and the processing of diffractograms by the Rietveld method showed that the obtained nanoparticles have a face-centered cubic lattice with an average particle size of 13 nm. With decreasing temperature, residual stresses increase and peaks corresponding to the superstructure appear. The band gap of NiO was determined from the optical absorption spectrum and amounted to 3.21 eV. Magnetic measurements showed that, at temperatures of 200 and 300 K, NiO nanoparticles, unlike bulk particles, exhibit ferromagnetic behavior, and at 5 K a magnetic hysteresis loop appears. Based on the studies, a dendritic model of the nanoparticle microstructure is proposed.

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

Доп.точки доступа:
Ushakov, A. V.; Karpov, I. V.; Fedorov, L. Y.; Demin, V. G.; Goncharova, E. A.; Shaihadinov, A. A.; Zeer, G. M.; Zharkov, S. M.; Жарков, Сергей Михайлович
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Comparative analysis of two methods for synthesis of fullerenes at different helium pressures / A. I. Dudnik, I. V. Osipova, N. S. Nikolaev, G. N. Churilov // Fuller. Nanotub. Carbon Nanostruct. - 2020. - Vol. 28, Is. 9. - P. 697-701, DOI 10.1080/1536383X.2020.1746281. - Cited References: 16. - The reported study was funded by RFBR according to the research project No 18-32-20011 . - ISSN 1536-383X. - ISSN 1536-4046

РУБ Chemistry, Physical + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Atomic, Molecular & Chemical
Рубрики:
PLASMA
   YIELD
   DISCHARGE
   PARAMETERS
   DEPENDENCE
   C60
Кл.слова (ненормированные):
Fullerene synthesis -- alternating current -- direct current
Аннотация: The results of the effect of helium pressure in the chamber on the amount and composition of the produced fullerenes (C60, C70, etc.) synthesized in the arc plasma with graphite electrodes are presented. The findings obtained when the arc is powered by a direct (DC) and alternating (AC) currents of low frequency were compared in the same chamber with the electrodes located at the same angle to each other. These two methods are drastically different. The complete conversion of graphite into fullerene soot in AC occurs, but a part of the graphite is converted into a cathode deposit that does not contain fullerenes in DC, the relative amount of which increases when decreasing the helium pressure in the chamber. The highest fullerene content in fullerene soot of 10.2 wt.% is produced at a pressure of 127.5 kPa in AC arc, but in DC arc, the highest content of fullerenes in fullerene soot of 8.3 wt.% is produced at a pressure of 33.3 kPa.

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

Доп.точки доступа:
Dudnik, A. I.; Дудник, Александр Иванович; Osipova, I. V.; Осипова, Ирина Владимировна; Nikolaev, N. S.; Николаев, Никита Сергеевич; Churilov, G. N.; Чурилов, Григорий Николаевич; RFBRRussian Foundation for Basic Research (RFBR) [18-32-20011]
}
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10.

Orlov, V. A.
Interaction of a Magnetic Vortex with Magnetic Anisotropy Nonuniformity / V. A. Orlov, G. S. Patrin, I. N. Orlova // J. Exp. Theor. Phys. - 2020. - Vol. 131, Is. 4. - P. 589-599, DOI 10.1134/S1063776120090071. - Cited References: 51. - This study was supported by the Russian Foundation for Basic Research (project no. 18-02-00161) . - ISSN 1063-7761
Кл.слова (ненормированные):
Crystallites -- Defects -- Equations of motion -- Magnetism -- Plasma theory -- Vortex flow
Аннотация: The problem of propagation of a magnetic inhomogeneity in the form of a magnetic vortex near a defect simulated by a crystallite with uniaxial anisotropy has been solved theoretically. The defect (crystallite) is implanted into a homogeneous 2D ferromagnetic matrix. Apart from the anisotropy energy, the term responsible for the existence of a centrosymmetric potential is included into the total energy. For calculations, we have used the method of collective variables (Thiele equation). We have considered the variants of bidirectional and unidirectional anisotropy of the crystallite. Analysis of the equations of motion for different directions of the anisotropy axis of the implanted defect has revealed the variety in the behavior of the vortex core as a quasiparticle. The vortex core can be trapped by the defect with equilibrium position of the vortex at rest directly on the crystallite or during its motion at a certain distance from it. It is shown that for a small damping parameter and in the case when the defect anisotropy axis lies in the plane of the magnet, the vortex moves so as if its core experiences the action of the repulsive axially symmetric potential.

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Публикация на русском языке Орлов, Виталий Александрович. Взаимодействие магнитного вихря с неоднородностью магнитной анизотропии [Текст] / В. А. Орлов, Г. С. Патрин, И. Н. Орлова // Журн. эксперим. и теор. физ. - 2020. - Т. 158 Вып. 4. - С. 672-683

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center,” Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Astaf’ev Krasnoyarsk State Pedagogical University, Krasnoyarsk, 660049, Russian Federation

Доп.точки доступа:
Patrin, G. S.; Патрин, Геннадий Семёнович; Orlova, I. N.; Орлов, Виталий Александрович
}
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