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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shalygina T. A., Rudenko M. S., Nemtsev I. V., Parfenov V. A., Voronina S. Y., Simonov-Emelyanov I. D., Borisova P. E.
Заглавие : Influence of the filler particles’ surface morphology on the polyurethane matrix’s structure formation in the composite
Место публикации : Polymers. - 2021. - Vol. 13, Is. 22. - Ст.3864. - ISSN 20734360 (ISSN), DOI 10.3390/polym13223864
Примечания : Cited References: 32. - This work was carried out by the team of the scientific laboratory “Intelligent Materials and Structures” within the state assignment of the Ministry of Science and Higher Education of the Russian Federation for the implementation of the project “Development of multifunctional smart materials and structures based on modified polymer composite materials capable to function in extreme conditions” (Project No. FEFE-2020-0015)
Аннотация: This article presents the surface morphology effect of silicon carbide (SiC) particles on the polyurethane binder’s structure formation in a dispersed-filled composite. The difference in the morphology and surface relief of filler particles was ensured by the implementation of plasma chemical modification. As a result of this modification, the filler consisted of core-shell particles characterized by a SiC core and a carbon shell (SiC@C), as well as a carbon shell decorated with silicon nanoparticles (SiC@C/SiNP) or nanos (SiC@C/SiNW). The study of the relaxation properties of polyurethane composites has shown that the strongest limiting effect on the molecular mobility of boundary layer’s chain segments is exerted by a highly developed surface with a complex relief of SiC@C/SiNP and SiC@C/SiNW particles. An empirical method was proposed to find the polymer fractions spent on the formation of the boundary, transition and bulk layers of the polymer matrix in the composite. It was shown that the morphology of the filler particles’ surface does not affect the dependence of the boundary layer thickness on the filler’s volume fraction. However, with an increase in the degree of surface development, the boundary layer thickness decreases.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Денисова, Елена Александровна, Чеканова, Лидия Александровна, Комогорцев, Сергей Викторович, Ли О.А., Рауцкий, Михаил Владимирович, Немцев, Иван Васильевич, Исхаков, Рауф Садыкович
Заглавие : Ферромагнитный резонанс Со-Ni композитных наностержней, осажденных в поликарбонатные мембраны
Коллективы : "Новое в магнетизме и магнитных материалах", международная конференция, Научный совет по физике конденсированных сред РАН, МИРЭА - Российский технологический университет, Московский государственный университет им. М.В. Ломоносова, Магнитное общество России
Место публикации : Новое в магнетизме и магнитных материалах: сборник трудов XXIV международной конференции/ прогр. ком.: Р. С. Исхаков, С. Г. Овчинников [и др.]. - 2021. - Секция 11: Магнитные наноструктуры. - Ст.11-35-38
Примечания : Библиогр.: 4. - Исследование выполнено при финансовой поддержке РФФИ, Правительства Красноярского края и Красноярского краевого фонда науки в рамках научного проекта No 20-43-240003
Аннотация: Пористый полимер, наполненный сегментированными наностержнями из магнитного металла, перспективен для создания новых микроволновых устройств. Массивы двухсегментных стержней Ni/Co и коаксиальных стержней Ni@Co получены методом химического осаждения в поликарбонатную трековую мембрану. Внутреннее эффективное магнитное поле магнитных композитных наностержней, упорядоченных на немагнитной подложке, исследовано с помощью ферромагнитного резонанса. Установлено влияние межфазных границ для двух типов стержней на эффективное поле. Обнаружено, что характеристиками ФМР можно управлять с помощью конструкции стержня (ядро-оболочка или двухсегментный стержень), свойств матрицы (пористость) и условий химического осаждения.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Leksikov An. A., Tyurnev V. V., Shabanov D. A.
Заглавие : Study of a composite consisting of metal nanoparticles in a dielectric matrix and multilayer bandpass filters based on it
Место публикации : Dokl. Phys. - 2021. - Vol. 66, Is. 3. - P.59-63. - ISSN 10283358, DOI 10.1134/S1028335821030010
Примечания : Cited References: 11. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation within a State Assignment, project no. FEFE-2020-0013 “Development of the Theory of Self-Configuring Machine Learning Algorithms for Modeling and Predicting the Characteristics of Components of Complex Systems”
Аннотация: The frequency and concentration dependences of the effective complex permittivity of a composite consisting of silver nanoparticles in a polystyrene dielectric matrix have been investigated. It has been found that, with an increase in the volume concentration of particles in the composite to ~33%, the real part of its permittivity increases from 2.6 to ~103, while the loss tangent remains no higher than 10–2 up to a frequency of 1 THz. We show the possibility of designing bandpass filters based on composite layered structures, which can be tuned by selecting the particle concentration in the quarter-wavelength layers of the mirrors that ensure the optimal interaction of half-wavelength resonators with each other and the outer resonators with free space. The high contrast between the matrix and the composite permittivities makes it possible to create mirrors with a required reflectivity using a minimum number of layers.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avdeeva A. Yu., Vetrov S. Ya., Timofeev I. V.
Заглавие : Splitting of a Tamm plasmon polariton at the interface between a metal and a resonant nanocomposite layer conjugated with a photonic crystal
Место публикации : J. Opt. Soc. Am. B. - 2021. - Vol. 38, Is. 6. - P.1792-1797. - ISSN 07403224 (ISSN), DOI 10.1364/JOSAB.420490
Примечания : Cited References: 36. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004 and by Russian Foundation for Basic Research, project No. 19-52-52006. The authors are thankful to Pavel S. Pankin for valuable discussions and comments
Аннотация: Splitting of a Tamm plasmon polariton at the interface between a metal and a nanocomposite layer conjugated with a photonic crystal (Bragg mirror) has been theoretically investigated. The splitting can be implemented when the Tamm plasmon polariton frequency approaches the resonance frequency of the nanocomposite, which consists of metallic nanoballs dispersed in a transparent matrix. The reflectance spectrum of the p-polarized waves at the normal incidence of light has been calculated. It has been established that the Tamm plasmon polariton splitting significantly depends on the concentration of nanoballs in the nanocomposite layer and its thickness. The solution of the dispersion equation derived for a sample with semi-infinite mirrors has been compared with the spectra obtained for a finite structure by the transfer matrix method.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzovnikova L. A., Denisova E. A., Nemtsev I. V., Iskhakov R. S., Komogortsev S. V., Kuzovnikov A. A., Maltsev V. K., Shepeta N. A.
Заглавие : Magnetostructural study of nanostructured and amorphous bulk alloys (Co–P)100–xCux
Место публикации : J. Struct. Chem. - 2021. - Vol. 62, Is. 5. - P.802-809. - ISSN 00224766 (ISSN), DOI 10.1134/S0022476621050164
Примечания : Cited References: 19. - The study was supported by RFBR, the Government of the Krasnoyarsk Region, and the Krasnoyarsk Regional Science Foundation within project No. 20-43-240003
Аннотация: The work reports a magnetostructural study of bulk nanostructured composite materials Co–P/Cu prepared by dynamic compaction (DC) and uniaxial cold pressing (CP). The initial particles with amorphous and crystalline structure are synthesized by chemical deposition. Magnetic characteristics of composites (saturation magnetization, Bloch constant, local anisotropy field, ferro-magnetic resonance line width, coercive force) are studied. The phase compositions of initial composite particles and compacts prepared by two methods (DC and CP) are determined from the anisotropy field and the Bloch constant values using magnetic phase analysis. It is shown that the use of composite particles in dynamic compaction allows obtaining homogeneous nanostructured bulk materials while preserving magnetic characteristics of initial powders.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Denisova E. A., Chekanova L. A., Shepeta N.A., Kuzovnikova L. A.
Заглавие : Comparison of the microstructure and magnetic properties of films and composite powders based on 3-d metal
Коллективы : International Baltic Conference on Magnetism: focus on nanobiomedicine and smart materials, Балтийский федеральный университет им. И. Канта
Место публикации : 4th International Baltic Conference on Magnetism (IBCM 2021): Book of abstracts. - 2021. - P.193
Примечания : Cited References: 1. - The research was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-43-240003.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Morozov E. V., Voronin A. S., Kniga, S., V, Buznik V. M.
Заглавие : Nuclear magnetic resonance study of ice-based composite materials reinforced with nanodisperse aluminum oxide fibers
Коллективы : Institute of Chemistry and Chemical Technology (Siberian Branch, Russian Academy of Sciences) [0287-2021-0012]; Russian Science FoundationRussian Science Foundation (RSF) [18-1300392]
Место публикации : Inorg. Mater. Appl. Res. - 2022. - Vol. 13, Is. 1. - P.217-224. - ISSN 2075-1133, DOI 10.1134/S2075113322010270. - ISSN 2075-115X(eISSN)
Примечания : Cited References: 21. - This work was performed within the scope of state contract no. 0287-2021-0012 of the Institute of Chemistry and Chemical Technology (Siberian Branch, Russian Academy of Sciences) in the part of developing the MRI methods for studying composite materials; also the work was supported by the Russian Science Foundation (project no. 18-1300392) in the part of the study of the processes of water crystallization and ice melting in ice-based composite materials
Предметные рубрики: SELF-DIFFUSION
WATER
Аннотация: Pulsed-field gradient NMR spectroscopy and magnetic resonance imaging methods were used to investigate water suspensions of nanosized fibers of aluminum oxide and ice composite materials based on these fibers. Introduction of the nanofibers was shown to have no noticeable structural effect in the suspensions in the Al2O3 concentration range of 1-10 wt %. High content of the filler was found to change the morphology and texture of the ice matrix in the composites remarkably: it becomes more homogeneous and acquires a higher degree of continuity; the melting front does not visualize internal melting zones or integrity defects in the composite. At the same time, addition of the nanofibers to the ice composites weakly influences the quantitative dynamics of the heat transfer, which is manifested in close values of the propagation speeds of the freezing/melting front in the samples at similar temperatures.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Goncharova O. A., Chekanova L. A., Iskhakov R. S.
Заглавие : Synthesis, Structure and Magnetic Properties of Composite Powders UDD/Ni-P and UDD/Co-P
Коллективы : "Advanced Carbon Nanostructures", Joint International Conference
Место публикации : Joint International Conference "Advanced Carbon Nanostructures" (ACN 2011): Abstracts. - 2011. - Ст.P3.11. - С. 172
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Romanenko A. I., Anikeeva O. B., Tkachev E. N., Zhdanov K. R., Kuznetsov V. L., Mazov I. N., Elumeeva K. V., Popkov S. I., Shaykhutdinov K. A.
Заглавие : Influence of dielectric matrix on electrophysical properties of MWNT-based nanocomposites
Коллективы : International Conference on Composites Materials, ICCM 2011
Место публикации : ICCM International Conferences on Composite Materials/ 18th International Conference on Composites Materials, ICCM 2011 (2011 ; 21.08 - 26.08 ; Jeju). - 2011 (Шифр 20527840)
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Mataev M. M., Abdraimova M. R., Tursinova, Zh. I., Kezdikbaeva A. T., Shiyan Ya. G., Plekhanov V. G.
Заглавие : Magnetic properties of the DyMn2O5-Mn3O4 nanoparticle composite
Коллективы : Ministry of Education and Science of the Republic of KazakhstanGovernment of the Republic of KazakhstanMinistry of Education and Science of the Republic of Kazakhstan [05130165]; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0011]
Место публикации : Tech. Phys. - 2021. - Vol. 66, Is. 4. - P.635-641. - ISSN 1063-7842, DOI 10.1134/S1063784221040137. - ISSN 1090-6525(eISSN)
Примечания : Cited References: 34. - This study was supported by the Ministry of Education and Science of the Republic of Kazakhstan (project no. 05130165) and within the framework of a state assignment of the Ministry of Science and Higher Education of the Russian Federation (theme no. FSRZ-2020-0011) in the framework of the Cooperation Agreement between Siberian Federal University, Kirensky Institute of Physics, and Kazakh National Women's Teacher Training University
Предметные рубрики: CRYSTAL-STRUCTURE
Аннотация: The magnetic and resonance properties of the DyMn2O5–Mn3O4 nanoparticle composite have been experimentally investigated. Two magnetic transitions at temperatures of T1 ≈ 65 K and T2 ≈ 230 K have been established; the T1 value differs from the temperatures of the transitions in the initial materials, which has been attributed to the interparticle interactions. Temperature T2 corresponds to the DyMnO3 impurity phase (1 at %). Three microwave absorption peaks have been observed in the magnetic resonance spectrum, which is explained within the model of a magnetically two-phase system. One resonance is attributed to Mn3O4, and the other two peaks are attributed to an ensemble of highly anisotropic DyMn2O5 particles with a random distribution of anisotropy axes.
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