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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Осипова, Ирина Владимировна, Дудник, Александр Иванович, Гончарова О. А., Глущенко, Гарий Анатольевич, Крылов, Александр Сергеевич, Томашевич Е. В., Чурилов, Григорий Николаевич
Заглавие : Зависимость электрического сопротивления компзитной пленки из фулерена и WO3 от времени воздействия рентгеновского излучения
Коллективы : "Электромеханика, электротехнологии, электротехнические материалы и компоненты", Международная конференция
Место публикации : XII Международная Конференция "Электромеханика, электротехнологии, электротехнические материалы и компоненты". МКЭЭЭ-2008: труды : 18-23 сентября 2008 г., Крым, г. Алушта. - С. 102
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Чурилов, Григорий Николаевич, Осипова, Ирина Владимировна, Внукова, Наталья Григорьевна, Осадчая С. В., Марченко С. А., Томашевич Е. В., Петраковская, Элеонора Анатольевна, Жарков, Сергей Михайлович, Зеер Г. М., Крылов, Александр Сергеевич, Бондаренко, Геннадий Васильевич
Заглавие : Синтез и свойства наночастиц со структурой ядро-оболочка на основе никеля и углерода
Коллективы : "Электромеханика, электротехнологии, электротехнические материалы и компоненты", Международная конференция
Место публикации : XII Международная Конференция "Электромеханика, электротехнологии, электротехнические материалы и компоненты". МКЭЭЭ-2008: труды : 18-23 сентября 2008 г., Крым, г. Алушта. - С. 105
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Александров, Кирилл Сергеевич, Voronov V. N., Vtyurin A. N., Krylov A. S., Molokeev M. S., Pavlovskiy M. S., Goryainov S. V., Lihacheva A. N., Ancharov A. I.
Заглавие : Pressure-indused phase transition in cubic ScF3 crystal
Коллективы : Russia/CIS/Baltic/Japan Symposium on Ferroelectricity
Место публикации : 9th Russai/CIS/Baltic/Japan symposium on ferroelectricity: abstracts book : June 15-19, 2008, Vilnius, Lithuania. - p.116
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Vtyurin A.N., Krylov A.S., Gerasimova Ju.V., Ivanenko A.A., Shestakov N.P., Laptash N.M.
Заглавие : Ordering processes and phase transitions in ammonium-containing crystals of A2BWO3F3 elpasolites – com?parative Raman and infrared study
Коллективы : International Seminar on Ferroelastic Physics
Место публикации : The 6th International Seminar on Ferroelastics Physics (ISFP-6): Voronezh, September 22–25, 2009. - С. 23
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nikiforov A. A., Krylov A. S., Krylova S. N., Gorshkov V. S., Pelegov D. V.
Заглавие : Temperature Raman study of Li4Ti5O12 and ambiguity in the number of its bands
Колич.характеристики :10 с
Место публикации : J. Raman Spectrosc. - 2024. - Vol. 55, Is. 3. - P.406-415. - ISSN 03770486 (ISSN), DOI 10.1002/jrs.6641. - ISSN 10974555 (eISSN)
Примечания : Cited References: 51. - The research was funded by the Russian Science Foundation (project No 22-22-00350, https://rscf.ru/project/22-22-00350)
Аннотация: The two primary physical methods for identifying lithium titanate, a negative electrode material used commercially, are X-Ray diffraction and Raman spectroscopy. Although there are many publications on this topic, they are focused mainly on chemistry, so there are still some points that require clarification from a physical and methodological point of view. Difference of experimentally observed and theoretically predicted Raman spectra was explained through a combination of experiments and computations. The work comprises experiments and computations to explain why there are different numbers of predicted and observed Raman-active bands. Our low-temperature study and the analysis of thermal shifts during heating led us to conclude that the approach with surplus bands is advantageous and we recommend using major F2g band shifts to estimate the sample heating.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Golovkina E. V., Krylova S. N., Vtyurin A. N., Krylov A. S.
Заглавие : Analyzing the symmetry of the Raman spectra of crystals according to angular dependences
Колич.характеристики :6 с
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2024. - Vol. 88, Is. 5. - P.773-778. - ISSN 10628738 (ISSN), DOI 10.1134/S1062873824706573. - ISSN 19349432 (eISSN)
Примечания : Cited References: 32. - This work was supported by the Russian Foundation for Basic Research, project no. 21-52-12018. The authors are grateful to Dr. Irena Senkovska for providing our DUT-8(Ni) samples
Аннотация: The authors propose a way of reconstructing the Raman tensor by studying the angular dependences of the intensities of the Raman lines of unoriented microcrystals. The technique is verified using familiar calomel Hg2Cl2 crystals. It is shown that the lines on DUT-8 (Ni) crystals indicating phases with open and closed pores have different types of symmetries. The technique can be used to reconstruct the Raman tensor for any unoriented crystalline sample.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kenzhebayeva Yu. A., Kulachenkov N. K., Rzhevskiy S. S., Slepukhin P. A., Shilovskikh V. V., Efimova A., Alekseevskiy P., Gor G. Y., Emelianova A., Shipilovskikh S., Yushina I. D., Krylov A. S., Pavlov D. I., Fedin V. P., Potapov A. S., Milichko V. A.
Заглавие : Light-driven anisotropy of 2D metal-organic framework single crystal for repeatable optical modulation
Колич.характеристики :11 с
Место публикации : Commun. Mater. - 2024. - Vol. 5, Is. 1. - Ст.48. - ISSN 26624443 (eISSN), DOI 10.1038/s43246-024-00485-5
Примечания : Cited References: 84. - V.A.M. acknowledges the financial support from the Russian Science foundation (Grant Numb. 22-72-10027 “Flexible hybrid materials as active layer in memory devices”, work on pump-probe and nonlinear optical spectroscopuy) and the Priority 2030 Federal Academic Leadership Program. Y.A.K. acknowledges the financial support from the Russian Science foundation (Grant Numb. 19-79-10259 for transmission optical spectroscopy with heating and laser mode). S.S. acknowledges the financial support by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program. P.A. acknowledge AFM Centre of ITMO University for help with the MOF mechanical characterization. Temperature-dependent SCXRD analysis was carried out at XRD facilities of NIIC operating with the support from the Ministry of Science and Higher Education of the Russian Science Federation (project 121031700321-3). The authors would like to thank Mirko Schoenitz and Irina Molodetsky for discussion of crystallographic data. A.K. acknowledges the financial support from RFBR and DFG (Grant Numb. 21-52-12018 for Raman measurements). Raman experiments have been performed in the Center of Common Use of the Krasnoyarsk Scientific Center SB RAS
Аннотация: Structural transformations of metal-organic frameworks (MOFs) go through a complex energy landscape with multiple intermediate states. Although the transformations allow controlling the functional properties of the MOFs, an imbalance between MOF flexibility and rigidity sets a fundamental barrier to achieving fast and multiple transformations. Here, we study the stimuli-responsive structural transformation in a 2D MOF assembled from paddle-wheel secondary building units joined by a semi-flexible organic ligand with 1,2,4-triazole and carboxylate groups with a rigid adamantane cage between them. The structure results in a distinctive combination of MOF flexibility and rigidity, thus, facilitating a continuous transformation driven by laser light. We reveal the laser-induced anisotropic thermal expansion nature of such transformation, initiating optical changes of the 2D MOF. The latter is utilized for fast and highly repeatable optical modulation of over 10,000 cycles. The endurance of such a 2D MOF-based optical modulator during 1 year of storage at ambient conditions paves the way to design tunable and robust MOFs for diverse applications.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yushina I. D., Matveychuk Y. V., Krylov A. S.
Заглавие : Theoretical insights into the mechanical properties of DUT-8(Ni) MOF in the open and closed pore phases
Колич.характеристики :8 с
Место публикации : Cryst. Growth Des. - 2024. - Vol. 24, Is. 4. - P.1570-1577. - ISSN 15287483 (ISSN), DOI 10.1021/acs.cgd.3c01154. - ISSN 15287505 (eISSN)
Примечания : Cited References: 48. - The work was financially supported by the Russian Foundation for Basic Research and DFG project number no. 21-52-12018
Аннотация: Insights into the mechanical properties of DUT-8(Ni) MOF crystals capable of structural phase transitions are presented. The open and closed pore phases of DUT-8(Ni) are drastically different in their mechanical behavior. For the open-pore phase, a huge anisotropy of compressibility and shear modulus is observed, caused by the presence of two orthogonal motives formed by aromatic linkers bound with Ni atoms via Ni–O bonds. The possibility of easy shifting of linkers with breaking and formation of new Ni–O and Ni–N bonds at the application of shear stress, which is at the same time more stable at uniaxial stress, is shown on the basis of the stiffness tensor analysis. This fact assumes the flexibility of the open-pore phase crystals and their ability for structural transformation. The less prominent anisotropy of elastic moduli and the increased values of these moduli for the closed-pore phase crystals indicate the predominantly hardness and absence of flexibility of this phase.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grigoriev, Maxim V., Ruseikina, Anna V., Molokeev M. S., Chernyshev, Vladimir А., Aleksandrovsky A. S., Krylov A. S., Krylova S. N., Shestakov N. P., Velikanov D. A., Garmonov, Alexander A., Matigorov, Alexey V., Ostapchuk, Evgeny A., Schleid, Thomas, Safin, Damir A.
Заглавие : Elucidating elusive quaternary selenide EuCeCuSe3: Synthesis, crystal structure, properties and theoretical studies
Колич.характеристики :9 с
Место публикации : J. Rare Earths. - 2024. - Vol. 42, Is. 1. - P.163-171. - ISSN 10020721 (ISSN), DOI 10.1016/j.jre.2022.11.004. - ISSN 25094963 (eISSN)
Примечания : Cited References: 47
Аннотация: We report on the novel heterometallic quaternary selenide EuCeCuSe3, the fabrication of which has been a challenge until this work. The structure of the reported selenide was elucidated from the powder X-ray diffraction data, which revealed the formation of EuCeCuSe3 with excellent yield (96.7%) accompanied with a minor fraction of CeSe2 (3.3%), and was best solved in orthorhombic space group Pnma with the BaLaCuS3 structural type. Thus, the crystal structure of the title compound completes the row of the heterometallic quaternary selenides EuRECuSe3 (RE = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y), of which the cerium-based derivative exclusively belongs to the BaLaCuS3 structural type. The distortion of the CuSe4 polyhedron was compared for the whole series of EuRECuSe3 compounds using the τ4-descriptor for four coordinated ions, which revealed the highest degree of distortion for the Ce3+-containing selenide, followed by the La3+-based derivative. Furthermore, the crystallographic and geometrical parameters of the reported selenide were discussed in comparison to the Ce3+-based sulfides SrCeCuS3 and EuCeCuS3. Ab initio calculations of the crystal structure, a phonon spectrum and elastic constants for the crystal of EuСeCuSe3 were also performed. The types and wavenumbers of fundamental modes were determined and the involvement of ions participating in the phonon modes was assessed. The experimental IR spectrum of the reported selenide was interpreted and found to be in agreement with the calculated spectrum. The experimental direct band gap of EuCeCuSe3 was measured to be 1.36 eV that is consistent with the concept of its origin due to interband transitions between orbitals emerging mainly from 4f (valence band) and 5d (conduction band) levels of the Eu2+ cation. The dependence of the Young's modulus on the direction demonstrates the anisotropy of the elastic properties, while the Vickers hardness for EuCeCuSe3 was calculated to be 5.2 GPa. Finally, the title compound is paramagnetic above 4 K.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shvets P., Krylov A. S., Maksimova K., Goikhman A.
Заглавие : Raman spectroscopy of Wadsley phases of vanadium oxide
Колич.характеристики :14 с
Место публикации : J. Raman Spectrosc. - 2024. - Vol. 55, Is. 4. - P.445-458. - ISSN 03770486 (ISSN), DOI 10.1002/jrs.6644. - ISSN 10974555 (eISSN)
Примечания : Cited References: 133. - This work was prepared with support from the Ministry of Science and Higher Education of the Russian Federation (project FZWM-2020-0008)
Аннотация: We summarize the current knowledge on crystal structures, synthesis, applications, and Raman spectroscopy of Wadsley phases of vanadium oxide, including VO2 (B), V6O13, V4O9, V3O7, and V2O5. While these oxides have garnered significant attention for potential energy storage applications and have been studied for decades, there remains inconsistency in data regarding their characteristic Raman spectra. To address this, we synthesized a series of Wadsley phases by physical vapor deposition of amorphous vanadium oxide films and subsequent annealing in a controlled environment. X-ray diffraction studies confirmed the formation of VO2 (B), V6O13, V4O9, and V3O7. We meticulously measured the room-temperature Raman spectra of these phases, offering robust reference data for the easy identification of vanadium oxides in unknown samples. Finally, we studied low-temperature phase transitions in VO2 (B) and V6O13.
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