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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Qiu, Lei, Guan, Mengyu, Wang, Wei, Molokeev M. S., Polyutov, Sergey, Dai, Zhigao, Li, Guogang
Заглавие : Amino-bridged attapulgite@perovskite nanocomposites: The role of bridge linkage to optical property and stability
Колич.характеристики :11 с
Место публикации : Inorg. Chem. Front. - 2023. - Vol. 10, Is. 16. - P.4797-4807. - ISSN 20521553 (eISSN), DOI 10.1039/D3QI00863K
Примечания : Cited References: 50. - This work was supported by the National Natural Science Foundation of China (Grant Nos. 52072349 and 52172162). Z.D. acknowledges support from the Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) (No. 162301202610), the Natural Science Foundation of Guangdong Province (2022A1515012145), Shenzhen Science and Technology Program (JCYJ20220530162403007), and Key Research and Development Plan of Hubei Province. G.L. acknowledges support from the Natural Science Foundation of Zhejiang Province (LR22E020004). M.S. Molokeev and S.P. Polyutov acknowledge the support by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ2023-0006)
Аннотация: Perovskite-based nanocomposites have garnered significant interests due to their potential in interfacial engineering, optical modification, and stability enhancement. However, current understanding of the construction models between perovskites and guest materials is limited, and the design concept of perovskite-based nanocomposites remains unclear. Herein, we thoroughly investigate the effects of amino bridge linkage in attapulgite@perovskite nanocomposites on the crystallization kinetics, optical properties, and stabilities of perovskites by monitoring the difference in structural, compositional, and morphological characteristics. The attapulgite@perovskite nanocomposite with amino bridge linkage exhibited a smaller average size distribution of 23.8 ± 5.8 nm, along with enhanced thermal stability (81% relative PL intensity after a heating-cooling cycle) and photo-stability (84% relative PL intensity after 30 h ultraviolet light irradiation). These improvements can be attributed to the adequate passivation of amino bridge linkages. Our work aims to provide a deeper understanding of perovskite-based nanocomposite construction and inspire new approaches for modifying their optical properties and enhancing their stability.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Semenov S. V., Knyazev Yu. V., Balaev D. A., Karnachuk O. V., Ikkert O. P.
Заглавие : Biosyntesis of magnetic nanocomposites using sulfate-reducing bacteria
Коллективы : Байкальская международная конференция "Магнитные материалы. Новые технологии", "Магнитные материалы. Новые технологии", Байкальская международная конференция, "Magnetic materials. New tecnologies", Baikal International Conference, Иркутский государственный университет
Место публикации : 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. - P.170. - ISBN 978-5-00133-051-6, DOI 10.26516/978-5-9624-2178-0.2023.1-207
Примечания : Библиогр.: 2
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzubov A. A., Kovaleva E. A., Avramov P. V., Kuklin A. V., Mikhaleva N. S., Tomilin F. N., Sakai S., Entani S., Matsumoto Y., Naramoto H.
Заглавие : Contact-induced spin polarization in BNNT(CNT)/TM (TM=Co, Ni) nanocomposites
Коллективы : Russian Scientific Fund [14-13-00139]
Место публикации : J. Appl. Phys.: American Institute of Physics, 2014. - Vol. 116, Is. 8. - Ст.084309. - ISSN 0021-8979, DOI 10.1063/1.4894157. - ISSN 1089-7550
Примечания : Cited References: 21. - This work was supported by the Russian Scientific Fund, Project No. 14-13-00139. The authors would like to thank Institute of Computational Modelling of SB RAS, Krasnoyarsk; Joint Supercomputer Center of RAS, Moscow; the HPC Research Department and Center of Equipment for Joint Use of Siberian Federal University, Krasnoyarsk; Siberian Supercomputer Center (SSCC) of SB RAS, Novosibirsk; and Laboratory of Parallel Information Technologies 21 of Research Computing Center of Moscow State University (the SKIF MSU "Chebyshev" system) for providing the access to their supercomputers.
Предметные рубрики: TOTAL-ENERGY CALCULATIONS
HEXAGONAL BORON-NITRIDE
WAVE BASIS-SET
AB-INITIO
PSEUDOPOTENTIALS
DISPERSION
NANOTUBE
NI(111)
Аннотация: The interaction between carbon and BN nanotubes (NT) and transition metal Co and Ni supports was studied using electronic structure calculations. Several configurations of interfaces were considered, and the most stable ones were used for electronic structure analysis. All NT/Co interfaces were found to be more energetically favorable than NT/Ni, and conductive carbon nanotubes demonstrate slightly stronger bonding than semiconducting ones. The presence of contact-induced spin polarization was established for all nanocomposites. It was found that the contact-induced polarization of BNNT leads to the appearance of local conductivity in the vicinity of the interface while the rest of the nanotube lattice remains to be insulating. (c) 2014 AIP Publishing LLC.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avramov P. V., Kuzubov A. A., Sakai, Seiji, Ohtomo, Manabu, Entani, Shiro, Matsumoto, Yoshihiro, Naramoto, Hiroshi, Eleseeva N. S.
Заглавие : Contact-induced spin polarization in graphene/h-BN/Ni nanocomposites
Место публикации : J. Appl. Phys.: American Institute of Physics, 2012. - Vol. 112, Is. 11. - Ст.114303. - P. - ISSN 0021-8979, DOI 10.1063/1.4767134
Примечания : Cited References: 47. - This work was supported by JAEA Research fellowship (P.V.A.). P.V.A. also acknowledges JAEA ASRC and Molecular Spintronics Group for hospitality and fruitful collaboration. The authors are grateful to the ICS SB RAS and SFU CC (Krasnoyarsk), ISC RAS and MSU CRC, (SKIF MSU "Chebyshev", Moscow) for computer resources. This work was partially supported by the RFBR grant 12-02-31417.
Предметные рубрики: HEXAGONAL BORON-NITRIDE
TRILAYER GRAPHENE
NI(111) SURFACE
GRAPHITE
APPROXIMATION
SPINTRONICS
DIFFRACTION
SIMULATION
SUBSTRATE
CARBON
Аннотация: Atomic and electronic structure of graphene/Ni(111), h-BN/Ni(111) and graphene/h-BN/Ni(111) nanocomposites with different numbers of graphene and h-BN layers and in different mutual arrangements of graphene/Ni and h-BN/Ni at the interfaces was studied using LDA/PBC/PW technique. Using the same technique corresponding graphene, h-BN and graphene/h-BN structures without the Ni plate were calculated for the sake of comparison. It was suggested that C-top:C-fcc and N-top:B-fcc configurations are energetically favorable for the graphene/Ni and h-BN/Ni interfaces, respectively. The Ni plate was found to induce a significant degree of spin polarization in graphene and h-BN through exchange interactions of the electronic states located on different fragments. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4767134]
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhigalov V. S., Bykova L. E., Myagkov V. G., Pavlova A. N., Volochaev M. N., Matsynin A. A., Patrin G. S.
Заглавие : CoPt-Al2O3 nanocomposite films: synthesis, structure, and magnetic properties
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science [18-42-243009 r_mol_a, 19-43-240003 r_a]; Foundation for Assistance to Small Innovative Enterprises in Science and Technology [11843GU/2017, 0033636]
Место публикации : J. Surf. Ingestig. - 2020. - Vol. 14, Is. 1. - P.47-53. - ISSN 1027-4510, DOI 10.1134/S102745102001022X. - ISSN 1819-7094(eISSN)
Примечания : Cited References: 29. - This study was supported by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects no. 18-42-243009 r_mol_a and no. 19-43-240003 r_a, and the Foundation for Assistance to Small Innovative Enterprises in Science and Technology, contract no. 11843GU/2017, code 0033636, U.M.N.I.K. competition.
Предметные рубрики: SOLID-STATE SYNTHESIS
GRANULAR THIN-FILMS
THERMITE SYNTHESIS
PHASE
Аннотация: The structure and magnetic properties of CoPt–Al2O3 nanocomposite films synthesized by the annealing of Al/(Co3O4 + Pt) bilayers on a MgO(001) substrate at 650°C in vacuum are investigated. The synthesized composite films contain ferromagnetic CoPt grains with an average size of 25–45 nm enclosed in a nonconducting Al2O3 matrix. The saturation magnetization (Ms ~ 330 G) and coercivity (Hc ≈ 6 kOe) of the films are measured in the film plane and perpendicular to it. The obtained films are characterized by a spatial rotational magnetic anisotropy, which makes it possible to arbitrarily set the easy magnetization axis in the film plane or perpendicular to it using a magnetic field stronger than the coercivity (H ˃ Hc).
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Denisova E. A., Komogortsev S. V., Iskhakov R. S., Chekanova L. A., Velikanov D. A., Kalinin Y. E., Sitnikov A. V.
Заглавие : Effect of annealing on the magnetic properties of (Co40Fe40B20)x(SiO2)1–x granular nanocomposites
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press, 2016. - Vol. 80, Is. 11. - P.1332-1334. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873816110186
Примечания : Cited References: 31. - This work was supported by the Russian Foundation for Basic Research, project nos. 15-08-06673, 16-03-00256, and RFBR-KRFS 15-42-04171.
Ключевые слова (''Своб.индексиров.''): annealing--magnetic properties--multilayers--spin waves--sputtering--concentration dependence--effect of annealing--granular composites--ion-beam sputtering--metal phase--spin wave resonances--ion beams
Аннотация: The effect of annealing on the magnetic properties of (Co40Fe40B20)x(SiO2)1–x granular composites fabricated via ion-beam sputtering is investigated. It is established that annealing changes the concentration dependences of the ferromagnetic resonance field and linewidth and shifts the regions of metal phase concentration corresponding to the spin-wave resonance. © 2016, Allerton Press, Inc.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Mikhaleva E. A., Flerov I. N., Kartashev A. V., Gorev M. V., Bogdanov E. V., Bondarev V. S., Kogotkov L. N., Rysiakiewicz-Pasek E.
Заглавие : Effect of interaction of components on thermal properties of ferroelectric nanocomposites
Коллективы : "Porous Glasses-Special Glasses", Seminar, Wroclaw University of Science and Technology
Место публикации : Eleventh Seminar Porous Glasses-Special Glasses (PGL'2018): Abstracts and program. - 2018. - Ст.18. - P.23
Примечания : Библиогр.: 2
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Loiko V. A., Konkolovich A. V., Misckevich A. A., Krakhalev M. N., Prishchepa O. O., Shabanov A. V., Zyryanov V. Ya.
Заглавие : Electro-optical response of a monolayer polymer dispersed nematic liquid crystal film doped with surfactant
Место публикации : Liquid crystal polymer nanocomposites/ ed.: P. M. Visakh [et al.]: Elsevier, 2022. - Chap. 7. - P.163-211. - (Woodhead publishing in materials). - ISBN 978-0-12-822128-0, DOI https://doi.org/10.1016/B978-0-12-822128-0.00006-6
Примечания : References: 86
Аннотация: Light scattering and transmission by a monolayer polymer dispersed liquid crystal film containing liquid crystal droplets with inhomogeneous anchoring of liquid crystal molecules at the polymer-droplet interface is considered theoretically and experimentally. The developed optical model is based on the anomalous diffraction and interference approximations of the theory of scattering of waves. It is applied to describe the interference quenching effect for the coherently transmitted light and electrically controllable symmetry breaking effect in small-angle structure of light scattered by film containing droplets with inhomogeneous anchoring. The analysis of transmittance and reflectance of the one-dimensional photonic crystals composed of monolayers is carried out. The formation of the photonic band gaps is analyzed.
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Вид документа : Однотомное издание
Шифр издания :
Автор(ы) : Loiko V. A., Konkolovich A. V., Miskevich A. A., Krakhalev M. N., Prishchepa O. O., Shabanov A. V., Zyryanov V. Ya.
Заглавие : Electro-optical response of a monolayer polymer dispersed nematic liquid crystal film doped with surfactant
Место публикации : Liquid Crystal Polymer Nanocomposites: Woodhead Publishing, 2022. - Chapter 7. - P.163-211. - , DOI 10.1016/B978-0-12-822128-0.00006-6
Примечания : Cited References: 86
Аннотация: Light scattering and transmission by a monolayer polymer dispersed liquid crystal film containing liquid crystal droplets with inhomogeneous anchoring of liquid crystal molecules at the polymer-droplet interface is considered theoretically and experimentally. The developed optical model is based on the anomalous diffraction and interference approximations of the theory of scattering of waves. It is applied to describe the interference quenching effect for the coherently transmitted light and electrically controllable symmetry breaking effect in small-angle structure of light scattered by film containing droplets with inhomogeneous anchoring. The analysis of transmittance and reflectance of the one-dimensional photonic crystals composed of monolayers is carried out. The formation of the photonic band gaps is analyzed.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moseenkov S. I., Kuznetsov V. L., Zavorin A. V., Golubtsov G. V., Korovin, E. Yu., Suslyaev V. I., Ishchenko A. V., Serkova A. N., Sergeenko D. I., Velikanov D. A.
Заглавие : Electrophysical properties of composites based on polyethylene modified with multi-walled carbon nanotubes with high content of Fe-Co-catalyst
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [17-73-20293]
Место публикации : Russ. J. Appl. Chem. - 2020. - Vol. 93, Is. 4. - P.586-594. - ISSN 1070-4272, DOI 10.1134/S107042722004014X. - ISSN 1608-3296(eISSN)
Примечания : Cited References: 30. - This work was financially supported by the Russian Science Foundation, project no. 17-73-20293.
Предметные рубрики: POLYMER COMPOSITES
NANOPARTICLES
ACTIVATION
NANOCOMPOSITES
Аннотация: The effect of the residual catalyst for the synthesis of multi-walled carbon nanotubes (MWCNTs) on the electrophysical properties of MWCNT-polyethylene composites produced by melt mechanical mixing was studied. The residual catalyst content was varied by changing the MWCNTs synthesis time. The nanotubes used in the work were characterized using transmission and scanning electron microscopy, atomic emission analysis, X-ray phase analysis, and magnetic permeability measurements. The structure of the synthesized composites was studied using optical and scanning electron microscopy. The dependences of the specific magnetization on the applied magnetic field, bulk electrical conductivity on the volumetric content of the filler in the composite, and the frequency dependences of the reflection, transmission, and absorption of electromagnetic radiation in the range 0.01-18 GHz were obtained. It was established that the obtained composites are characterized by a uniform distribution of nanotubes in the polymer matrix, and the dependence of the bulk electrical conductivity on the content of MWCNTs in the composite has a percolation character. Variation in the synthesis time of nanotubes allows producing MWCNTs with a high content of ferromagnetic particles, which are an alloy close in stoichiometry to the composition of the active component of the catalyst. It was shown that the use of composites modified with MWCNTs with a high content of residual catalyst is more effective for absorbing electromagnetic radiation due to an increase in their magnetic losses.
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