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Каталог книг и брошюр библиотеки ИФ СО РАН

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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) : 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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Krylov A. S., Shipilovskikh S. A., Krylova S. N., Slyusarenko N. V., Timofeeva M., Kenzhebayeva Yu. A., Bachinin S. V., Yushina I. D., Cherepakhin A. V., Shestakov N. P., Nemtsev I. V., Vtyurin A. N., Milichko V. A.
Заглавие : Application of DUT-4 MOF structure switching for optical and electrical humidity sensing
Колич.характеристики :6 с
Место публикации : Dalton Trans. - 2024. - Vol. 53, Is. 8. - P.3459-3464. - ISSN 14779226 (ISSN), DOI 10.1039/D4DT00038B. - ISSN 14779234 (eISSN)
Примечания : Cited References: 37. - The authors acknowledge the support by the state assignment of the Kirensky Institute of Physics FRC KSC SB RAS, also this work was financially supported by the RFBR (Russian Foundation for Basic Research), project no. 21-52-12018. S. A. S. acknowledges the financial support by the Russian Science Foundation (chemical part, Grant No. 22-73-10069 "Design and application of flexible metal organic frameworks for photonics devices"). V.A.M. acknowledges the Priority 2030 Federal Academic Leadership Program Ivan Sergeev (student in ITMO Univ.) for supporting in IV curve analysis. Raman, FTIR and SEM experiments were performed in the Center for Common Use of the Krasnoyarsk Scientific Center SB RAS (Krasnoyarsk, Russia)
Аннотация: The threshold structural transformation of the DUT-4 metal–organic framework (MOF) from an ordered to distorted phase during exposure to ambient conditions has been revealed. The in situ X-ray diffraction analysis, in situ Raman and FTIR spectroscopy, scanning electron microscopy and synchronous thermal analysis have been used for investigation. The reversible effect of exposure time and humidity on such a phase transition has been confirmed. We also demonstrated that the observed phase transition correlated well with changes in the optical and electronic properties of DUT-4, paving the way to a new family of MOF-based phase change materials for optoelectronic applications.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanova O. S., Edelman I. S., Lin, Chun-Rong, Svetlitsky E. S., Sokolov A. Е., Lukyanenko, Kirill A., Sukhachev A. L., Shestakov N. P., Chen, Ying-Zhen, Spivakov, Aleksandr A.
Заглавие : Core–shell Fe3O4@C nanoparticles for the organic dye adsorption and targeted magneto-mechanical destruction of Ehrlich ascites carcinoma cells
Место публикации : Materials. - 2023. - Vol. 16, Is. 1. - Ст.23. - ISSN 19961944 (eISSN), DOI 10.3390/ma16010023
Примечания : Cited References: 65. - This research was funded partly by the Ministry of Science and Higher Education of the Russian Federation, project FWES-2021-0035. C.-R.L., Y.-Z.C. and A.A.S. thank the National Science and Technology Council of Taiwan for the financial support, Grants NSTC № 108-2923-M-153-001-MY3 and № 110-2112-M-153-005-. Magnetic investigations were carried out in the Center for Collective Use of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS”
Аннотация: The morphology, structure, and magnetic properties of Fe3O4 and Fe3O4@C nanoparticles, as well their effectiveness for organic dye adsorption and targeted destruction of carcinoma cells, were studied. The nanoparticles exhibited a high magnetic saturation value (79.4 and 63.8 emu/g, correspondingly) to facilitate magnetic separation. It has been shown that surface properties play a key role in the adsorption process. Both types of organic dyes—cationic (Rhodomine C) and anionic (Congo Red and Eosine)—were well adsorbed by the Fe3O4 nanoparticles’ surface, and the adsorption process was described by the polymolecular adsorption model with a maximum adsorption capacity of 58, 22, and 14 mg/g for Congo Red, Eosine, and Rhodomine C, correspondingly. In this case, the kinetic data were described well by the pseudo-first-order model. Carbon-coated particles selectively adsorbed only cationic dyes, and the adsorption process for Methylene Blue was described by the Freundlich model, with a maximum adsorption capacity of 14 mg/g. For the case of Rhodomine C, the adsorption isotherm has a polymolecular character with a maximum adsorption capacity of 34 mg/g. To realize the targeted destruction of the carcinoma cells, the Fe3O4@C nanoparticles were functionalized with aptamers, and an experiment on the Ehrlich ascetic carcinoma cells’ destruction was carried out successively using a low-frequency alternating magnetic field. The number of cells destroyed as a result of their interaction with Fe3O4@C nanoparticles in an alternating magnetic field was 27%, compared with the number of naturally dead control cells of 6%.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grossman V., Atuchin V. V., Bazarov B. G., Aleksandrovsky A. S., Eremin E. V., Krylov A. S., Kuratieva N., Bazarova J. G., Maximov N., Molokeev M. S., Oreshonkov A. S., Pervukhina N., Shestakov N. P.
Заглавие : Structural, spectroscopic, electric and magnetic properties of new trigonal K5FeHf(MoO4)6 orthomolybdate
Место публикации : Molecules. - 2023. - Vol. 28, Is. 4. - Ст.1629. - ISSN 14203049 (eISSN), DOI 10.3390/molecules28041629
Примечания : Cited References: 82. - This work was supported by the state order of BINM SB RAS (0273-2021-0008), IIC (121031700318-8), ISP (FWGW-2022-0006) and the Russian Science Foundation (21-19-00046). The research was granted by the Government of the Russian Federation (075-15-2022-1132)
Аннотация: A new multicationic structurally disordered K5FeHf(MoO4)6 crystal belonging to the molybdate family is synthesized by the two-stage solid state reaction method. The characterization of the electronic and vibrational properties of the K5FeHf(MoO4)6 was performed using density functional theory calculations, group theory, Raman and infrared spectroscopy. The vibrational spectra are dominated by vibrations of the MoO4 tetrahedra, while the lattice modes are observed in a low-wavenumber part of the spectra. The experimental gap in the phonon spectra between 450 and 700 cm−1 is in a good agreement with the simulated phonon density of the states. K5FeHf(MoO4)6 is a paramagnetic down to 4.2 K. The negative Curie–Weiss temperature of −6.7 K indicates dominant antiferromagnetic interactions in the compound. The direct and indirect optical bandgaps of K5FeHf(MoO4)6 are 2.97 and 3.21 eV, respectively. The K5FeHf(MoO4)6 bandgap narrowing, with respect to the variety of known molybdates and the ab initio calculations, is explained by the presence of Mott-Hubbard optical excitation in the system of Fe3+ ions.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tomilin F. N., Artyushenko P. V., Shchugoreva I. A., Rogova A. V., Vnukova N. G., Churilov G. N., Shestakov N. P., Tchaikovskaya O. N., Ovchinnikov S. G., Avramov P. V.
Заглавие : Structure and vibrational spectroscopy of C82 fullerenol valent isomers: An experimental and theoretical joint study
Место публикации : Molecules. - 2023. - Vol. 28, Is. 4. - Ст.1569. - ISSN 14203049 (eISSN), DOI 10.3390/molecules28041569
Примечания : Cited References: 57. - Synthesis and spectroscopic study of the Gd@C82OxHy complexes were supported by the Ministry of Science and Higher Education of the Russian Federation under project FWES-2022-0005. Molecular design of the fullerene derivatives was supported by the National Research Foundation of the Republic of Korea, grant NRF 2021R1A2C1010455. DFTB3 electronic structure calculations were supported by Project FSWM-2020-0033 of the Russian Ministry of Science and Education
Аннотация: Gd@C82OxHy endohedral complexes for advanced biomedical applications (computer tomography, cancer treatment, etc.) were synthesized using high-frequency arc plasma discharge through a mixture of graphite and Gd2O3 oxide. The Gd@C82 endohedral complex was isolated by high-efficiency liquid chromatography and consequently oxidized with the formation of a family of Gd endohedral fullerenols with gross formula Gd@C82O8(OH)20. Fourier-transformed infrared (FTIR) spectroscopy was used to study the structure and spectroscopic properties of the complexes in combination with the DFTB3 electronic structure calculations and infrared spectra simulations. It was shown that the main IR spectral features are formed by a fullerenole C82 cage that allows one to consider the force constants at the DFTB3 level of theory without consideration of gadolinium endohedral ions inside the carbon cage. Based on the comparison of experimental FTIR and theoretical DFTB3 IR spectra, it was found that oxidation of the C82 cage causes the formation of Gd@C82O28H20, with a breakdown of the integrity of the parent C82 cage with the formation of pores between neighboring carbonyl and carboxyl groups. The Gd@C82O6(OOH)2(OH)18 endohedral complex with epoxy, carbonyl and carboxyl groups was considered the most reliable fullerenole structural model.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Орлов, Юрий Сергеевич, Дудников, Вячеслав Анатольевич, Соколов, Алексей Эдуардович, Овчинникова Т. М., Шестаков, Николай Петрович, Овчинников, Сергей Геннадьевич
Заглавие : Флуктуации мультиплетности ионов Co3+ и смягчение фононного спектра редкоземельных оксидов кобальта
Место публикации : Письма в ЖЭТФ. - 2022. - Т. 115, Вып. 9-10. - С. 650-655. - ISSN 0370-274X, DOI 10.31857/S1234567822100081
Примечания : Библиогр.: 25. - Работа выполнена при финансовой поддержки гранта Российского научного фонда # 18-12-00022
Аннотация: Экспериментально и теоретически исследована необычная температурная зависимость спектров инфракрасного поглощения редкоземельных оксидов кобальта LaCoO3 и GdCoO3 в интервале температур 3.2-550 K. Обнаружено достаточно сильное смягчение оптической фононной моды, которое нельзя объяснить стандартным решеточным ангарманизмом. Показано, что красное смещение фононного спектра обусловлено квадратичным по смещению решетки электрон-фононным взаимодействием и флуктуациями мультиплетности ионов Co3+.
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РИНЦ
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sokolov A. Е., Ivanova O. S., Svetlitsky E. S., Lukyanenko K. A., Shabanov A. V., Shestakov N. P., Chen Y. -Z., Tseng Y.-T., Lin C.-R.
Заглавие : Core-shell Fe3O4@C nanoparticles for magneto-mechanical destroy of Ehrlich ascites carcinoma cells
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : The Sixth Asian school-conference on physics and technology of nanostructured materials: Proceedings. - VLadivostok, 2022. - Ст.IV.o.08. - P.189-190. - ISBN 987-5-8044-1716-2
Примечания : Cited References: 2
Предметные рубрики:
Аннотация: The core-shell magnetic nanoparticles, Fe3O4@C, were synthesized and surface aptamer-functionalized to use them as destroyers of living cancer Ehrlich's ascitic carcinoma cells. The morphology and features of the structural and magnetic properties of the obtained hybrid nanoparticles are studied.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Davletshin N. N., Ikonnikov, Denis A., Sutormin V. S., Shestakov N. P., Baron F. A., Vyunishev A. M.
Заглавие : Ghost image restoring using random speckles created by a liquid crystal cell
Место публикации : Opt. Lett. - 2022. - Vol. 47, Is. 1. - P.9-12. - ISSN 0146-9592, DOI 10.1364/OL.445684. - ISSN 1539-4794(eISSN)
Примечания : Cited References: 25
Аннотация: A liquid crystal cell is used to produce correlated light beams with speckle structures for implementation of pseudo-thermal ghost imaging. The liquid crystal cell makes it possible to provide random spatial intensity distributions, which are characterized by a low coefficient of mutual cross correlations. Ghost imaging of an object representing an amplitude mask is demonstrated. The quality of the reconstructed images was estimated by the method of structural similarity.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grigoriev, Maxim V., Solovyov, Leonid A., Ruseikina, Anna V., Aleksandrovsky A. S., Chernyshev, Vladimir A., Velikanov D. A., Garmonov, Alexander A., Molokeev M. S., Oreshonkov A. S., Shestakov N. P., Matigorov, Alexey V., Volkova, Svetlana S., Ostapchuk, Evgeniy A., Kertman, Alexander V., Schleid, Thomas, Safin, Damir A.
Заглавие : Quaternary selenides EuLnCuSe3: Synthesis, structures, properties and in silico studies
Место публикации : Int. J. Mol. Sci. - 2022. - Vol. 23, Is. 3. - Ст.1503. - ISSN 1422-0067(eISSN), DOI 10.3390/ijms23031503
Примечания : Cited References: 90
Предметные рубрики: RARE-EARTH
CRYSTAL-STRUCTURES
MAGNETIC-PROPERTIES
THERMOELECTRIC PERFORMANCE
Аннотация: In this work, we report on the synthesis, in-depth crystal structure studies as well as optical and magnetic properties of newly synthesized heterometallic quaternary selenides of the Eu+2Ln+3Cu+1Se3 composition. Crystal structures of the obtained compounds were refined by the derivative difference minimization (DDM) method from the powder X-ray diffraction data. The structures are found to belong to orthorhombic space groups Pnma (structure type Ba2MnS3 for EuLaCuSe3 and structure type Eu2CuS3 for EuLnCuSe3, where Ln = Sm, Gd, Tb, Dy, Ho and Y) and Cmcm (structure type KZrCuS3 for EuLnCuSe3, where Ln = Tm, Yb and Lu). Space groups Pnma and Cmcm were delimited based on the tolerance factor t’, and vibrational spectroscopy additionally confirmed the formation of three structural types. With a decrease in the ionic radius of Ln3+ in the reported structures, the distortion of the (LnCuSe3) layers decreases, and a gradual formation of the more symmetric structure occurs in the sequence Ba2MnS3 → Eu2CuS3 → KZrCuS3. According to magnetic studies, compounds EuLnCuSe3 (Ln = Tb, Dy, Ho and Tm) each exhibit ferrimagnetic properties with transition temperatures ranging from 4.7 to 6.3 K. A negative magnetization effect is observed for compound EuHoCuSe3 at temperatures below 4.8 K. The magnetic properties of the discussed selenides and isostructural sulfides were compared. The direct optical band gaps for EuLnCuSe3, subtracted from the corresponding diffuse reflectance spectra, were found to be 1.87–2.09 eV. Deviation between experimental and calculated band gaps is ascribed to lower d states of Eu2+ in the crystal field of EuLnCuSe3, while anomalous narrowing of the band gap of EuYbCuSe3 is explained by the low-lying charge-transfer state. Ab initio calculations of the crystal structures, elastic properties and phonon spectra of the reported compounds were performed.
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