Труды сотрудников института физики

/ I. Edelman [et al.] // IOP Conf. Ser.: Mater. Sci. Eng. - 2011. - Vol. 25, Is. 1. - Ст. 012017, DOI 10.1088/1757-899X/25/1/012017 . -
Аннотация: Static magnetization (SM), magnetic circular dichroism (MCD) and electron magnetic resonance (EMR) studies are reported of borate glasses 22.5 K 2O-22.5 Al 2O 3-55 B 2O 3 co-doped with iron and manganese oxides. In as-prepared glasses the paramagnetic ions usually are in diluted state; however, if the ratio of the iron and manganese oxides in the charge is 3/2, magnetic nanoparticles are found already in as-prepared glass. After additional thermal treatment all glasses show magnetic behaviour, MCD and EMR due to the presence of magnetic nanoparticles with characteristics close to those of manganese ferrite. By computer simulating the EMR spectra at variable temperatures, their morphological characteristics are deduced: relatively broad size and shape distribution with average diameter of ca. 3-4 nm. The characteristic temperature-dependent shift of the apparent resonance field is explained by a strong temperature dependence of the magnetocrystalline anisotropy in the nanoparticles. The potassium-alumina-borate glasses containing magnetic nanoparticles represent a novel class of materials: "transparent magnets". Indeed, they remain transparent in a part of visible and near infrared spectral range while showing magnetic and magneto-optical properties characteristic of magnetically ordered materials.

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Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Artemenko, A.; Curely, J.; Kliava, J.; Zaikovskiy, V. I.; Stepanov, S.; Baltic Conference on Silicate Materials(5 ; 2011 ; May ; 23-25 ; Riga, Latvia)

/ С. В. Хартов [и др.] // Вестник СибГАУ. - 2013. - № 3. - С. 228-231 . - ISSN 1816-9724
   Перевод заглавия: Technology of graphitic nanotubulenes formation in the porous anodic alumina
Аннотация: Описывается оригинальная технология покрытия графитовыми слоями внутренних стенок пор в пластине анодного оксида алюминия. Для синтеза графитизированного углерода при низких температурах (от 500 °С) использован процесс осаждения из газовой фазы с применением оригинального катализатора, предварительно внедренного в поры. Исследована морфология полученных структур, а также показано, что графит, осажденный на стенки пор оксида алюминия, формирует цилиндирическую трубку - нанотубулен. Обсуждаются возможности использования полученных структур в качестве функционально активных элементов различного назначения, например, наномембран с управляемыми транспортными свойствами, элементов наноэлектроники и др.
The paper describes the original coating technology of covering the inner walls of the pores with the graphite layers in the anodic aluminum oxide plate. For the synthesis of graphitizing carbon at low temperatures (500 °C) the deposition process from the gas phase was used, with the use of the original catalyst pre-embedded in the pores. The morphology of the resulting structures is investigated and it is shown that the carbon deposited on the pore walls of the alumina forms the cylindrical tube - nanotubulene. The possibility of use of the resulting structures as functionally active elements for various purposes, such as nanomembranes with controlled transport properties, and other elements of nanoelectronics, is discussed.

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

Доп.точки доступа:
Хартов, Станислав Викторович; Симунин, Михаил Максимович; Фадеев, Ю. В.; Немцев, Иван Васильевич; Nemtsev, I.V.; Зырянов, Виктор Яковлевич; Zyryanov, V. Ya.

/ A. S. Samardak [et al.] // J. Magn. Magn. Mater. - 2015. - Vol. 383. - P. 94-99, DOI 10.1010/j.jmmm.2014.10.047. - Cited References:24. - This work was supported in part by the Russian Ministry of Education and Science and Far Eastern Federal University. M.N acknowledges the student financial support of Iranian Nanotechnology Initiative Council. . - ISSN 0304. - ISSN 1873-4766
   Перевод заглавия: Конверсия магнитной анизотропии в электроосажденных нанонитях сплава CoNiРУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Аннотация: In this paper, the influence of alternating current (ac) electrodeposition frequency and waveform is reported on chemical composition, microstructure and consequently magnetic properties of Co-Ni binary alloy nanowire arrays embedded in an alumina template. For sinusoidal and square electrodeposition waveforms the easy axis of magnetization rotates from being parallel to perpendicular orientation to nanowire long axis as the deposition frequency increases from 200 to 800 Hz. The reason for the drastic change of magnetic anisotropy in nanowires is attributed to the increase of cobalt content and the crystal structure phase transformation from fcc-hcp mixture at high Ni content to imp at high Co content. We explain the conversion of magnetic behavior of nanowire arrays in terms of a competition between the shape and magnetocrystalline anisotropies. (C) 2014 Elsevier B.V. All rights reserved.

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Держатели документа:
Far Eastern Fed Univ, Sch Nat Sci, Vladivostok, Russia.
Sahand Univ Technol, Fac Mat Engn, Tabriz, Iran.
SB Russian Acad Sci, Inst Phys, Krasnoyarsk, Russia.

Доп.точки доступа:
Samardak, A. S.; Nasirpouri, F.; Nadi, M.; Sukovatitsina, E. V.; Ognev, A. V.; Chebotkevich, L. A.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Russian Ministry of Education and Science; Far Eastern Federal University; Iranian Nanotechnology Initiative Council

/ F. Nasirpouri [et al.] // J. Appl. Phys. - 2015. - Vol. 117, Is. 17. - Ст. 17E715, DOI 10.1063/1.4919124. - Cited References:30. - Alexander Samardak and his colleagues acknowledge the support of the Russian Ministry of Education and Science under the state task 559 and Far Eastern Federal University. . - ISSN 0021. - ISSN 1089-7550
   Перевод заглавия: Электроосажденные массивы нанонитей Co93.2P6.8 со структурой ядро-оболочка и перпендикулярной магнитной анизотропиейРУБ Physics, Applied

Аннотация: We demonstrate the formation of an unusual core-shell microstructure in Co93.2P6.8 nanowires electrodeposited by alternating current (ac) in an alumina template. By means of transmission electron microscopy, it is shown that the coaxial-like nanowires contain amorphous and crystalline phases. Analysis of the magnetization data for Co-P alloy nanowires indicates that a ferromagnetic core is surrounded by a weakly ferromagnetic or non-magnetic phase, depending on the phosphor content. The nanowire arrays exhibit an easy axis of magnetization parallel to the wire axis. For this peculiar composition and structure, the coercivity values are 2380 ± 50 and 1260 ± 35 Oe, parallel and perpendicular to the plane directions of magnetization, respectively. This effect is attributed to the core-shell structure making the properties and applications of these nanowires similar to pure cobalt nanowires with an improved perpendicular anisotropy.

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Держатели документа:
Sahand Univ Technol, Fac Mat Engn, Tabriz 513351996, Iran
Far Eastern Fed Univ, Sch Nat Sci, Vladivostok, Russia
SB Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

Доп.точки доступа:
Nasirpouri, F.; Peighambari, S. M.; Samardak, A. S.; Ognev, A. V.; Sukovatitsina, E. V.; Modin, E. B.; Chebotkevich, L. A.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Bending, S. J.; Russian Ministry of Education and Science [559]; Far Eastern Federal University

/ M. M. Simunin [et al.] // Tech. Phys. Lett. - 2015. - Vol. 41, Is. 11. - P. 1047-1050, DOI 10.1134/S1063785015110103. - Cited References:20. - This work was supported financially by the Russian Science Foundation, project no. 15-19-10017 . - ISSN 1063-7850. - ISSN 1090-6533РУБ Physics, Applied

Аннотация: A structure based on porous anodic alumina with through pores is synthesized. This structure may be of some interest in terms of fabricating electrically switchable membranes. Conducting tubulenes connected to a common input electrode are located in the pores of the structure. It is hypothesized that enhancement of the electric field nonuniformity associated with the indicated structure morphology should help raise the degree of ionic selectivity of the membrane and broaden the range of permissible concentrations of ions in the processed solution. An suggestion regarding the structure of synthesized tubulenes in the context of the problem of suppressing the physical sorption of ions on the pore surface and raising the hydrogen and oxygen reduction potentials relative to those of state-of-the-art field-switchable membranes is also made.

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Держатели документа:
Natl Res Univ Elect Technol MIET, Moscow 124498, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Inst Computat Modeling, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Simunin, M. M.; Khartov, S. V.; Shiverskii, A. V.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Fadeev, Yu. V.; Voronin, A. S.; Russian Science Foundation [15-19-10017]

/ О. В. Юшкова, В. И. Аникина, С. М. Жарков // Журн. СФУ. Сер. "Техника и технологии". - 2015. - Т. 8, Вып. 7. - С. 851-860 ; J. Sib. Fed. Univ. Eng. Technol.DOI 10.17516/1999-494X-2015-8-7-851-860
   Перевод заглавия: The destruction and transformation of the crystal lattice of alumina by mechanical activation
Аннотация: Изучено влияние механоактивации (МА) глинозема на изменение параметров его кристаллической решетки и на скорость растворения в расплаве фторидов при электролизе Установлено изменение фазового состава – образование рентгеноаморфного глинозема после МА в планетарной и вибрационной мельницах. Изучены структурные изменения в механоактивированных оксидных фазах типа корунда на примере α-Al2O3. Снимками подтверждено, что преобладающей плоскостью скольжения в структуре корунда является базисная плоскость {111}
We studied the influence of mechanical activation (MA) of alumina to modify its crystal lattice and on the dissolution rate in molten fluorides during electrolysis. The changes in phase composition– education x-ray amorphous alumina after MA mills: planetary and vibratory. Studied structural changes in mechanically activated oxide phases such as alumina example, α-Al2O3. The images confirmed that the dominant slip plane in the structure of corundum is the basal plane {111}.

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

Доп.точки доступа:
Аникина, В. И.; Aniquina V. I.; Жарков, Сергей Михайлович; Zharkov, S. M.; Yushkova O. V.

/ R. S. Iskhakov [et al.] // JETP Letters. - 2003. - Vol. 78, Is. 4. - P. 236-240, DOI 10.1134/1.1622038. - Cited References: 38 . - ISSN 0021-3640РУБ Physics, Multidisciplinary

Аннотация: The cooperative phenomena revealed in the field and temperature dependences of the magnetization in a system of iron nanoparticles in carbon nanotubes were studied experimentally. The character of the temperature dependences of the magnetization indicates that the ferromagnetic Fe particles in carbon nanotubes are exchange-coupled. In the region where the magnetization approaches saturation, the magnetization curves reveal the power dependence DeltaM similar to H-3/2 typical for a one-dimensional system of exchange-coupled ferromagnetic nanoparticles. (C) 2003 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Div, Novosibirsk 630090, Russia
Russian Acad Sci, Boreskov Inst Catalysis, Siberian Div, Novosibirsk 630090, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent'eva 3, Novosibirsk, 630090, Russian Federation
Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent'eva 5, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Balaev, A. D.; Балаев, Александр Дмитриевич; Okotrub, A. V.; Kudashov, A. G.; Kuznetsov, V. L.; Butenko, Y. V.

/ O. A. BAYUKOV [и др.] // Fiz. Tverd. Tela. - 1993. - Vol. 35, Is. 6. - P. 1449-1456. - Cited References: 16 . - ISSN 0367-3294РУБ Physics, Condensed Matter


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Доп.точки доступа:
BAYUKOV, O. A.; PETRAKOVSKII, G. A.; SABLINA, K. A.; MATVEIKO, E. N.

/ B. Belyaev [et al.] // Prog. Electromagn. Res. C : Proceedings. - 2017. - Vol. 72. - P. 91-103. - Cited References: 27 . - ISSN 1937-8718
Аннотация: A compact microstrip resonator based on the interdigital structure is proposed. The resonator has several times higher unloaded quality factor compared to similar resonators presented previously and can even reach the Q-factor of a regular λ/4 resonator. The size of the resonator can be significantly reduced with a substantial increase in quality factor by incrementing the number of fingers in the interdigital structure. In addition, for each gap between the fingers, there exist an optimal number of fingers that correspond to the maximum Q-factor. An extension of the upper stopband for a bandpass filter designed using the resonator can be achieved by the interconnection of the fingers in each of the comb structures. The simulation results are proven by fabricated resonators and a fourpole bandpass filter. For the central frequency of 2000 MHz and 16.2% fractional bandwidth, the lateral size of the filter is only 11.5mm × 3.8 mm for alumina substrate (eps = 9.8). The filter has an upper stopband up to 5.8f0 at the level −40 dB.

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Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Serzhantov, A.; Leksikov, Al. A.; Лексиков, Александр Александрович; Bal'va, Y. F.; Бальва, Ярослав Федорович; Leksikov, An. A.; Лексиков, Андрей Александрович

/ A. S. Samardak [et al.] // J. Alloys Compd. - 2018. - Vol. 732. - P. 683-693, DOI 10.1016/j.jallcom.2017.10.258. - Cited References: 60. - This work was supported by the Russian Foundation for Basic Research (grant 16-02-01015 А), by the Russian Ministry of Education and Science under the state task (3.5178.2017/8.9), by Act 211 of the Government of the Russian Federation (contract № 02.A03.21.0011) and by the Brain Pool Program (172S-2-3-1928) through the Korean Federation of Science and Technology Societies (KOFST) funded by the Ministry of Science, ICT and Future Planning. Financial support from Iranian Nanotechnology Initiative council is also acknowledged. . - ISSN 0925-8388
Аннотация: The magnetic microstructure of Co-Ni binary alloy nanowires electrodeposited with controlled composition into nanoporous aluminum oxide templates can be represented as an ensemble of stochastic magnetic domains, whose size is determined by the magnetic correlation length. Using a method based on the approaching of magnetization to saturation, we defined the dimension of regions with magnetic orientation coherency as the stochastic domain size. Based on the experimental measurements of magnetization curves near saturation and first order reversal curves (FORC), we described a relationship between the macroscopic and microscopic parameters of the nanowires depending on the crystal structure observed by high-resolution transmission electron microscopy in terms of the random anisotropy model. The alloy composition strongly determines the crystal structure, in particular, the grain size and hcp/fcc phase distribution, and influences the effective magnetic anisotropy energy providing the direction of easy magnetization in the nanowire arrays. The characterization of Co-Ni arrays by FORC method at room and low temperatures revealed the transformation of magnetic behavior and certain contributions to the energy of the effective magnetic anisotropy.

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Держатели документа:
School of Natural Sciences, Far Eastern Federal University, Vladivostok, Russian Federation
Institute of Physics, SB Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Department of Physics, Alexandru Ioan Cuza University of Iasi, Iasi, Romania
Faculty of Materials Engineering, Sahand University of Technology, Tabriz, Iran
Center for Spin-Orbitronic Materials, Korea University, Seoul, South Korea
National Research South Ural State University, Chelyabinsk, Russian Federation

Доп.точки доступа:
Samardak, A. S.; Ognev, A. V.; Samardak, A. Y.; Stebliy, E. V.; Modin, E. B.; Chebotkevich, L. A.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Stancu, A.; Panahi-Danaei, E.; Fardi-Ilkhichy, A.; Nasirpouri, F.

/ A. V. Kobyakov [et al.] // Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 7. - P. 864-865, DOI 10.3103/S1062873819070220. - Cited References: 5. - This work was supported by the Russian Foundation for Basic Research, project no. 18-02-00161-а. . - ISSN 1062-8738
Аннотация: Structural and magnetic measurements are made of an Al2O3/Ge-p/Al2O3/Co thin-film system. The structure is synthesized via ion-plasma deposition and can be used as a tunnel heterostructure. The dependences of the magnetic properties of cobalt on the rate of its deposition and the rates of deposition of preceding layers are established. © 2019, Allerton Press, Inc.

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Держатели документа:
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:
Kobyakov, A. V.; Кобяков, Александр Васильевич; Turpanov, I. A.; Турпанов, Игорь Александрович; Patrin, G. S.; Патрин, Геннадий Семёнович; Rudenko, R. Yu.; Руденко, Роман Юрьевич; Yushkov, V. I.; Юшков, Василий Иванович; Kosyrev, N. N.; Косырев, Николай Николаевич

/ E. A. Denisova, I. V. Nemtsev, S. V. Telegin [et al.] // J. Phys.: Conf. Ser. - 2020. - Vol. 1582, Is. 1. - Ст. 012078DOI 10.1088/1742-6596/1582/1/012078. - Cited References: 18. - This work was funded by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 18-42-240006 Nanomaterials with magnetic properties determined by the topological features of the nanostructure). The authors thank the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” for the provided equipment . -
Аннотация: The bulk soft magnetic glassy Co58Ni10Fe5B16Si11 alloy specimens have been prepared by plasma spray deposition. In order to increase resistivity of the material, the bulk Co58Ni10Fe5B16Si11-Al2O3 composite materials were fabricated. The investigations of structure and magnetic properties of the bulk samples were carried out by X-ray diffraction, electron microscopy and magnetic measurements. The relation of the structural features and magnetic characteristics of the bulk coating to the main parameters of the deposition regimes was determined. Optimized plasma spray deposition parameters allowed obtaining bulk glassy samples with magnetic parameters that are not inferior to the characteristics of a thermally treated rapidly quenched ribbon with the same composition. It was found that the bulk amorphous coatings can be characterized as a heterophase system. The relaxation annealing of the Co58Ni10Fe5B16Si11 bulk coating leads to a phase transition in this alloy in the precrystallization temperature range. The magnetic properties of the both kinds of coatings are correlated with changes in the microstructure. The appearance of nanocrystalline phase with TC640 K during relaxation heat treatment leads to a decrease of the coercivity and to an increase of the permeability. A comparison between the magnetic properties of the CoNiFe-BSi coating and (CoNiFe-BSi)-Al2O3, composite coating is carried out.

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Держатели документа:
Kirensky Institute of Physics, Sb Russian Academy of Sciences, 50/38, Akademgorodok str., Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 73 Svobodny ave., Krasnoyarsk, 660041, Russian Federation
Scientific Center, Federal Research Center Ksc Sb Ras, 50 Akademgorodok str., Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy ave., Krasnoyarsk, 660037, Russian Federation
Krasnoyarsk Institute of Railways Transport, Novaja Zarja str., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Nemtsev, I. V.; Telegin, S. V.; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuzovnikova, L. A.; Shepeta, N. A.; International Conference on High-Tech and Innovations in Research and Manufacturing(2020 ; 28 Feb. ; Krasnoyarsk)

/ A. S. Voronin, A. N. Masiygin, M. S. Molokeev, S. V. Khartov // J. Phys. Conf. Ser. - 2020. - Vol. 1679, Is. 2. - Ст. 022072DOI 10.1088/1742-6596/1679/2/022072. - Cited References: 10. - Studies by scanning electron microscopy and X-ray powder diffraction were performed on the equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS». The transmission 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
   Перевод заглавия: Нанесение атомного слоя ZnO на пленку из пористых нановолокон Al2O3
Аннотация: The paper presents the results of the formation and study of the morphological and structural characteristics of the mesoporous ZnO / Al2O3 nanofibers film (ZANF). The deposition of a ZnO layer on Al2O3 nanofibers film (ANF) ~ 1 µm thick was carried out by the method of atomic layer deposition. The morphology of the mesoporous composite layer ZnO / Al2O3 (ZANF) has been studied by scanning and transmission electron microscopy. It is shown that in the process of atomic layer deposition, the ZnO layer grows according to the Stranski-Krastanov mechanism. A ZnO layer less than 5 nm thick gives an island structure in which Al2O3 nanofibers are uniformly coated with ZnO particles, an increase in the ZnO layer thickness to 15 nm demonstrates a continuous coating of Al2O3 nanofibers. The system has a core-shell structure. The resulting composite structures are promising for applications in photocatalysis and gas sensing.

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Держатели документа:
Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences (KSC SB RAS), Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Reshetnev Siberian State University Science and Technology, Krasnoyarsk, 660037, Russian Federation
Kirensky Institute of Physics (FRC KSC SB RAS), Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Voronin, A. S.; Masiygin, A. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Khartov, S. V.; International Scientific Conference on Applied Physics, Information Technologies and Engineering(2nd ; 25 September - 4 October 2020 ; Krasnoyarsk, Russian Federation)

/ A. A. Kuular, M. M. Simunin, T. V. Bermeshev [et al.] // Tech. Phys. Lett. - 2020. - Vol. 46, Is. 12. - P. 1215-1218, DOI 10.1134/S1063785020120214. - Cited References: 6. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of a state order to the Smart Materials and Structures Research Laboratory on the subject “Development of Multifunctional Smart Materials and Structures Based on Modified Polymer Composites Capable to Operate under Extreme Conditions,” subject no. FEFE-2020-0015 . - ISSN 1063-7850
Аннотация: Improvement of physical and mechanical characteristics of mineral-filled polyethylene (MFPE) upon addition of alumina nanofibers with a high aspect ratio has been experimental studied. It is shown that, at the weight concentration of alumina nanofibers of 0.1 wt %, the ultimate tensile strength increases from 3.82 ± 0.04 to 6.70 ± 0.07 MPa and the Young’s modulus increases from 1.08 ± 0.01 to 1.38 ± 0.01GPa (with respect to MFPE). The MFPE/Al2O3 nanofiber composite can be described within a model of weak adhesive interaction between a filler and a matrix with high friction.

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

Доп.точки доступа:
Kuular, A. A.; Simunin, M. M.; Bermeshev, T. V.; Voronin, A. S.; Dobrosmyslov, S. S.; Fadeev, Y. V.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Khartov, S. V.

/ I. I. Ryzhkov, I. A. Kharchenko, E. V. Mikhlina [et al.] // Int. J. Heat Mass Transf. - 2021. - Vol. 176. - Ст. 121414, DOI 10.1016/j.ijheatmasstransfer.2021.121414. - Cited References: 57. - This work is supported by the Russian Foundation for Basic Research, Project 18-29-19078 . - ISSN 0017-9310
   Перевод заглавия: Рост углеродных нанотрубок внутри пористых анодных мембран из оксида алюминия: моделирование и эксперимент
Аннотация: Porous anodic alumina (PAA) membranes represent a widely used and extensively studied template for production of carbon nanotubes (CNT). The PAA–CNT membranes possess a number of unique properties, such as controllable nanotube geometry, size– and chemically–based selectivity as well as high water permeability. In this work, we first propose a combination of gas phase and surface reaction models to quantitatively describe the growth of carbon nanotubes in PAA membranes in a commercial CVD reactor. A complimentary experimental study of CNT formation from ethanol precursor with argon as a carrier gas is performed. A new method for characterizing carbon nanotubes geometry by SEM and TEM image processing of membrane cross–sections is proposed. The simulations show that the carbon growth rate (in nm/min) averaged over the membrane remains constant during the deposition process until the pore diameter becomes relatively small, and rapidly falls to zero after that. The carbon nanotube thickness near the membrane surface is slightly higher than that in the membrane center. The carbon growth rate increases with synthesis temperature and pressure, while it decreases with the argon flow rate. The dependence of carbon growth rate on the ethanol/water flow rate reaches maximum at some intermediate value. These results are supported by the experimental data obtained from SEM/TEM image processing. It is found that the SEM data provide overestimated values of nanotube diameter and thickness in comparison with the TEM data. The obtained results provide new insights into the CNT growth kinetics in nanoporous media, and develop quantitative guidelines for synthesis of CNT–PAA membranes with precisely controlled nanopore geometry. It also validates the combined homogenous / heterogeneous reaction model by comparison with carbon deposition kinetics on a nanometer scale.

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Держатели документа:
Institute of Computational Modelling SB RAS Akademgorodok 50–44, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny 79, Krasnoyarsk, 660041, Russian Federation
Federal Research Center KSC SB RAS, Akademgorodok 50–38, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Ryzhkov, I. I.; Kharchenko, I. A.; Mikhlina, E. V.; Minakov, A. V.; Guzei, D. V.; Nemtsev, I. V.; Немцев, Иван Васильевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Korobko, A. V.; Simunin, M. M.

/ И. А. Харченко, А. В. Минаков [и др.] // Решетневские чтения : [Электронный ресурс] : материалы XXIV Междунар. науч.-практич. конф., посвящ. памяти ген. конструктора ракет.-космич. систем акад. М. Ф. Решетнева : в 2-х ч. : электронное издание. - Красноярск : СибГУим. М. Ф. Решетнева, 2020. - Ч. 1. - С. 553-555. - Библиогр.: 8. - Работа выполнена при финансовой поддержке РФФИ, проект No 18-29-19078 мк. Физико-химический анализ материалов был выполнен в Красноярском региональном центре коллективного пользования ФИЦ КНЦ СО РАН
   Перевод заглавия: Ecsperimental and theoretical study of carbon deposition in porous anodic alumina membranes
Аннотация: Проведено экспериментальное исследование процесса формирование углеродных слоев в мембранах пористого анодного оксида алюминиям етодом CVD. Экспериментальные зависимости скорости роста углерода от температуры и расхода аргона хорошо согласуются с расчетами на основе математической модели

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Держатели документа:
Сибирский федеральный университет, Красноярск, Россия
Сибирский федеральный университет
Институт вычислительного моделирования СО РАН
Институт физики им. Л.В. Киренского СО РАН
Сибирский федеральный университет, Красноярск, Россия
Институт вычислительного моделирования СО РАН
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Харченко, И. А.; Минаков, А. В.; Михлина, Е. В.; Немцев, Иван Васильевич; Nemtsev, I.V.; Рыжков, И. И.; "Решетневские чтения", международная научно-практическая конференция(24 ; 2020 ; нояб. ; 10-13 ; Красноярск); Сибирский государственный университет науки и технологий им. акад. М. Ф. Решетнева; Информационные спутниковые системы им. академика М. Ф. Решетнева, АО; Красноярский машиностроительный завод, ОАО

/ N. O. Ronzhin, E. D. Posokhina, E. V. Mikhlina [et al.] // J. Phys. Chem. Solids. - 2022. - Vol. 167. - Ст. 110785, DOI 10.1016/j.jpcs.2022.110785. - Cited References: 68. - This work is supported by the Russian Foundation for Basic Research, Project 18–29–19078. The authors would like to express their special thanks to Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS» for providing the equipment to ensure the accomplishment of this project . - ISSN 0022-3697
Аннотация: Phenolic compounds are common environmental pollutants, which are used in many industries and contaminate water environment due to industrial wastewater discharge. Presently, there is an increasing demand for the development and improvement of inexpensive, easy-to-use analytical tools for in-situ detection of phenolic compounds. In this work, we investigate the effect of adsorption of Cu2+ and Fe2+ ions on the catalytic activity of a composite material based on alumina nanofibers (ANF) and detonation nanodiamonds (DND) in the co-oxidation of phenols with 4-aminoantipyrine in the presence of hydrogen peroxide. We have found more than two-fold increase of the catalytic activity for ANF + DND + Cu composite, while the activity of ANF + DND + Fe composite is found to decrease by several times in comparison with the original ANF + DND material. The results of FTIR analysis indicate that the adsorption of iron ions occurs with the formation of hydroxide surface groups and hydrogen bonds, which apparently block their catalytic activity in the Fenton redox cycle. The higher catalytic performance of AND + DND composite functionalized with copper ions makes it possible to detect two times lower concentrations of analytes (phenol and 4-chlorophenol) in comparison with the original composite. It is shown that the AND + DND + Cu composite provides a linear yield of the co-oxidation reaction product in a wide range of analyte concentrations (0.25–100 μM for phenol and 0.5–25 μM for 4-chlorophenol). Model experiments demonstrate the applicability of copper-functionalized composite as a reusable sensor for the determination of phenol in aqueous samples.

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Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok 50/50, Krasnoyarsk, 660036, Russian Federation
Institute of Computational Modelling SB RAS, Akademgorodok 50/44, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Federal Research Center KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny 79, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Ronzhin, N. O.; Posokhina, E. D.; Mikhlina, E. V.; Shestakov, N. P.; Шестаков, Николай Петрович; Nemtsev, I. V.; Немцев, Иван Васильевич; Bondar, V. S.; Ryzhkov, I. I.

/ A. V. Minakov, M. I. Pryazhnikov, M. M. Simunin [et al.] // J. Mol. Liq. - 2022. - Vol. 367. - Ст. 120385, DOI 10.1016/j.molliq.2022.120385. - Cited References: 62. - This work is partially financed by Ministry of Science and Higher Education of the Russian Federation (project no. FSRZ-2020-0012) . - ISSN 0167-7322
   Перевод заглавия: Реологические свойства коллоидных суспензий нановолокон оксида алюминия
Аннотация: We have studied the rheological properties of colloidal suspensions based alumina nanofibers (ANF) with a mass fraction of 0.125–2 wt%. The ANFs used in this work are stand out by a high aspect ratio L/D ∼ 106–107 (dry ANF before dispersion) and ease of dispersion due to the self-organized aligned structure of ANF, which is characteristic of our synthesis method. It was shown that ANF suspensions are characterized by high colloidal stability, zeta potential has a significant dependence on ANF volume fraction. ANF have a strong effect on the shear viscosity of colloidal suspensions; non-Newtonian behavior is observed in suspensions with an ANF mass fraction of 0.5 wt%. A comprehensive study of the propagation of ultrasound in ANF suspensions was carried out. Based on experimental results on the scattering of ultrasound in suspensions and theoretical calculations, data on the bulk viscosity of ANF suspensions were obtained for the first time. The results of the study allow us to judge the possibility of using ANF as a promising fibrous additive to optimize the rheological properties of suspensions for various technical purposes, which include drilling muds, paint and varnish compositions, concrete-cement mixtures.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kutateladze Institute of Thermophysics, SB RAS, Novosibirsk, 630090, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences (KSC SB RAS), Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology (Reshetnev University), Krasnoyarsk, 660037, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Bauman Moscow State Technical University, Moscow, 105005, Russian Federation

Доп.точки доступа:
Minakov, A. V.; Pryazhnikov, M. I.; Simunin, M. M.; Dobrosmyslov, S. S.; Kuular, A. A.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Khartov, S. V.; Voronin, A. S.

/ I. R. Volkova, L. E. Tyryshkina, M. N. Volochaev [et al.] // Prot. Met. Phys. Chem. Surf. - 2023. - Vol. 59, Is. 1. - P. 71-75, DOI 10.1134/S2070205122700022. - Cited References: 9 . - ISSN 2070-2051. - ISSN 2070-206X
Аннотация: Copper electrodeposited composite coatings containing two types of aluminum-oxide powders with different dispersities (alumina Al2O3-1 and electroexplosive aluminum-oxide nanopowder Al2O3-2) are obtained during the work. The studies show that introducing the powders leads to a change in the microstructure of the composites and a change in the grain growth principles during the formation of the coatings. Refinement and ordering of the grain structure of the coatings occurs and twinning defects and texture are formed. The change in the formation of the microstructure of the composites leads to a change in some operational characteristics: an increase in the microhardness (by 10% in the composites with the addition of alumina and by more than 30% in the coatings with electroexplosive aluminum oxide) and ultimate tensile strength (by 20% in the composites with Al2O3-1 and almost 1.5-fold in the samples with Al2O3-2).

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Держатели документа:
Federal Research Center “Krasnoyarsk Science Center”, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
Reshetnev Siberian State University of Science and Technology, 660037, Krasnoyarsk, Russia

Доп.точки доступа:
Volkova, I. R.; Tyryshkina, L. E.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Zaloga, A. N.; Shabanova, K. A.; Ovchinnikov, A. V.; Lyamkin, A. I.