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Intense charge transfer plasmons in golden nanoparticle dimers connected by conductive molecular linkers / A. S. Fedorov, M. A. Visotin, A. V. Lukyanenko [et al.] // J. Chem. Phys. - 2024. - Vol. 160, Is. 8. - Ст. 084110, DOI 10.1063/5.0183334. - Cited References: 52. - This study was supported by the Russian Science Foundation, Agreement No. 23-12-20007, and the Government of the Krasnoyarsk Territory and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, Agreement No. 256 . - ISSN 0021-9606. - ISSN 1089-7690
Аннотация: Golden nanoparticle dimers connected by conjugated molecular linkers 1,2-bis(2-pyridyl)ethylene are produced. The formation of stable dimers with 22 nm diameter nanoparticles is confirmed by transmission electron microphotography. The possibility of charge transfer through the linkers between the particles in the dimers is shown by the density functional theory calculations. In addition to localized plasmon resonance of solitary nanoparticles with a wavelength of 530 nm, the optical spectra exhibit a new intense absorption peak in the near-infrared range with a wavelength of ∼780 nm. The emergent absorption peak is attributed to the charge-transfer plasmon (CTP) mode; the spectra simulated within the CTP developed model agree with the experimental ones. This resonant absorption may be of interest to biomedical applications due to its position in the so-called transmission window of biological tissues. The in vitro heating of CTP dimer solution by a laser diode with a wavelength of 792 nm proved the efficiency of CTP dimers for achieving a temperature increase of ΔT = 6 °C, which is sufficient for hyperthermia treatment of malignant tumors. This indicates the possibility of using hyperthermia to treat malignant tumors using the material we synthesized.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
International Research Center of Spectroscopy and Quantum Chemistry – IRC SQC, Siberian Federal University, 660041 Krasnoyarsk, Russia
Siberian Federal University, 660041 Krasnoyarsk, Russia
Institute of Computational Modeling, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Visotin, M. A.; Высотин, Максим Александрович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Gerasimov, V. S.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич
}
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    MD investigations of of heat flow throw interfaces in 1D systems / A. S. Fedorov, M. A. Visotin, O. A. Sosedkin, E. V. Eremkin // J. Sib. Fed. Univ. Math. Phys. - 2023. - Vol. 16, Is. 3. - P. 385-396 ; Журн. СФУ. Матем. и физ. - Cited References: 26 . - ISSN 1997-1397. - ISSN 2313-6022
   Перевод заглавия: МД исследования границ раздела теплового потока в одномерных системах
Кл.слова (ненормированные):
molecular dynamic -- thermal conductivity -- interface -- temperature jump -- молекулярная динамика -- теплопроводность -- скачок температуры интерфейса
Аннотация: Molecular dynamic calculations (MD) of heterogeneous 1D periodical systems are presented. It is proposed the new technique of direct calculations of thermal conductivity, where there is only one thermostat in one piece of unit cell as well as another piece where artificial friction forces act on atoms. With the help of this scheme, calculations of 1D heterogeneous systems having regions with atoms of different atomic masses are presented. It is shown that the difference in atomic masses in adjacent regions of the systems leads to a significant temperature jump at interfaces between these regions. This temperature jump exists independently of the mass ratio on both sides of the interface.The reasons for these jumps are discussed. It is also shown that, by changing the alternation of regions with different masses of atoms, it is possible to reduce the total thermal conductivity of the system by several times. On the base of these results, we can hope that for three-dimensional structures also, the thermal conductivity can be significantly reduced.
Представлены молекулярно-динамические расчеты (МД) гетерогенных одномерных периодических систем. Предлагается новая методика прямых расчетов теплопроводности, при которой в одном элементе элементарной ячейки находится только один термостат, а в другом элементе действуют силы искусственного трения на атомы. С помощью этой схемы представлены расчеты одномерных гетерогенных систем, имеющих области с атомами разной атомной массы. Показано, что различие атомных масс в соседних областях систем приводит к значительному скачку температуры на границах раздела между этими областями. Этот скачок температуры существует независимо от отношения масс по обе стороны от границы раздела. Обсуждаются причины этих скачков. Также показано, что, изменяя чередование областей с разной массой атомов, можно в несколько раз уменьшить общую теплопроводность системы. На основании этих результатов можно надеяться, что и для трехмерных структур теплопроводность может быть значительно снижена.

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Держатели документа:
Институт физики им. Л. В. Киренского СО РАН Федеральный исследовательский центр КНЦ СО РАН Красноярск, Российская Федерация
Сибирский федеральный университет Красноярск, Российская Федерация

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Visotin, M. A.; Высотин, Максим Александрович; Sosedkin, Oleg A.; Eremkin, Egor V.

}
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Temperature and doping dependent short range antifferomagnetic order and pseudogap formation in hole-doped cuprates / S. G. Ovchinnikov, V. I. Kuzmin, S. V. Nikolaev, M. A. Visotin // 8th International conference on supercondactivity and magnetism (ICSM2023) : abstract book. - 2023. - Ст. 159. - P. 248. - Cited References: 1

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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RAS

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Kuzmin, V. I.; Кузьмин, Валерий Ипполитович; Nikolaev, S. V.; Visotin, M. A.; Высотин, Максим Александрович; International Conference on Supercondactivity and Magnetism(8 ; 2023 ; May 4-11 ; Ölüdeniz-Fethiye, Turkey)
}
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New ternary magnetic films of MAX phases / I. A. Tarasov, I. A. Yakovlev, M. A. Visotin [et al.] // The Sixth Asian school-conference on physics and technology of nanostructured materials : Proceedings. - VLadivostok, 2022. - Ст. Plenary 10. - P. 23-24. - Cited References: 16 . - ISBN 987-5-8044-1716-2
Аннотация: This article is devoted to the data analysis of magneto-optical ellipsometry data when they are collected from structures with uniaxial optical anisotropy. The magneto-optical parameter, being a part of an off-diagonal tensor elements of dielectric permit tivity, was deduced through Maxwell equations consideration. The way of carrying out an experiment is also dicsussed.

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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RAS
Siberian Federal University
Reshetnev Siberian State University of Science and Technology

Доп.точки доступа:
Tarasov, I. A.; Тарасов, Иван Анатольевич; Yakovlev, I. A.; Яковлев, Иван Александрович; Visotin, M. A.; Высотин, Максим Александрович; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Lyashchenko, S. A.; Лященко, Сергей Александрович; Maximova, O. A.; Максимова, Ольга Александровна; Varnakov, S. N.; Варнаков, Сергей Николаевич; Andryushchenko, T. A.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Asian School-Conference on Physics and Technology of Nanostructured Materials(6 ; 2022 ; Apr. 25-29 ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(6 ; 2022 ; 25-29 апр. ; Владивосток)
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    Insights into fullerene polymerization under the high pressure: The role of endohedral Sc dimer / S. V. Erohin, V. D. Churkin, N. G. Vnukova [et al.] // Carbon. - 2022. - Vol. 189. - P. 37-45, DOI 10.1016/j.carbon.2021.12.040. - Cited References: 39. - The authors gratefully acknowledge the financial support of RFBR (Project identifier:18-29-19080). The calculations were performed at supercomputer cluster provided by the Materials Modeling and Development Laboratory at NUST “MISIS” and Joint Supercomputer Center of the Russian Academy of Sciences. The authors thank the staff of the Information Technology Department of the Moscow Institute of Physics and Technology and express their gratitude to the Data Center Group for their help in making calculations. M.P. acknowledges the support of the Ministry of Science and Higher Education of the Russian Federation in the framework of the State Task (project code 0718-2020-0037) for Raman study, interpretation, and discussion of obtained results as well as Russian Science Foundation (project #20-12-00097) for investigation of fullerite mechanical properties. V.D.C. acknowledges the support of RFBR (Project identifier:20-32-90038) . - ISSN 0008-6223
   Перевод заглавия: Взгляд на полимеризацию фуллерена под высоким давлением: роль эндоэдральных димеров Sc
Кл.слова (ненормированные):
Endohedral metallofullerenes -- Fullerite -- Pressure induced phase transformation -- Density functional theory -- Density functional based tight binding
Аннотация: In this work, through the technology of producing endohedral metallofullerene in macroscopic quantities, the process of pressure polymerization of Sc2C2@C82 and their mechanical properties have been investigated in detail using a set of experimental and theoretical methods. The crucial role of endohedral atoms is demonstrated by comparison with pristine fullerenes. It is shown that the embedding of Sc2C2 complex inside a fullerene significantly facilitates the polymerization process which finally leads to the highly rigid material at high pressures.

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Держатели документа:
Technological Institute for Superhard and Novel Carbon Materials, 7a Tsentralnaya Street, Troitsk, Moscow, Russian Federation
National University of Science and Technology MISiS, Leninskiy prospect 4, Moscow, 119049, Russian Federation
Moscow Institute of Physics and Technology, Institute lane 9, Dolgoprudniy, Moscow region, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics FRC KSC SB RAS, FSBSI “Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russian Federation
Tomsk State University, Tomsk, 634050, Russian Federation
Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334, Russian Federation
Institute of Chemistry and Chemical Technology, FRC KSC SB RAS, FSBSI “Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Erohin, S. V.; Churkin, V. D.; Vnukova, N. G.; Внукова, Наталья Григорьевна; Visotin, M. A.; Высотин, Максим Александрович; Kovaleva, E. A.; Ковалева, Евгения Андреевна; Zhukov, V. V.; Antipina, L. Yu.; Tomashevich, Ye. V.; Mikhlin, U. L.; Popov, M. Yu.; Churilov, G. N.; Чурилов, Григорий Николаевич; Sorokin, P. B.; Fedorov, A. S.; Федоров, Александр Семенович
}
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    Thermal degradation of optical resonances in plasmonic nanoparticles / L. K. Sorensen, D. E. Khrennikov, V. S. Gerasimov [et al.] // Nanoscale. - 2022. - Vol. 14, Is. 2. - P. 433-447, DOI 10.1039/d1nr06444d. - Cited References: 85. - The work is supported by the Russian Science Foundation (project No. 18-13-00363). L. K. S. acknowledges the support of Carl Tryggers Stifetelse, project CTS 18-441. The authors thank the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" for the use of Hitachi S-5500 high-resolution scanning electron microscope for the analysis of nanomaterials. Some of the computations were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at the High Performance Computing Center North (HPC2N) partially funded by the Swedish Research Council through grant agree-ment no. SNIC 2020/3-29. Authors thank Anton Utyushev for technical assistance in preparation of Fig. 3 . - ISSN 2040-3364. - ISSN 2040-3372
   Перевод заглавия: Тепловая деградация оптических резонансов в плазмонных наночастицах

РУБ Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
STABILIZED GOLD NANOPARTICLES
DIPOLE INTERACTION-MODEL
Аннотация: The dependence of plasmon resonance excitations in ultrafine (3-7 nm) gold nanoparticles on heating and melting is investigated. An integrated approach is adopted, where molecular dynamics simulations of the spatial and temporal development of the atoms constituting the nanoparticles generate trajectories out of which system conformations are sampled and extracted for calculations of plasmonic excitation cross sections which then are averaged over the sample configurations for the final result. The calculations of the plasmonic excitations, which take into account the temperature- and size-dependent relaxation of the plasmons, are carried out with a newly developed Extended Discrete Interaction Model (Ex-DIM) and complemented by multilayered Mie theory. The integrated approach clearly demonstrates the conditions for suppression of the plasmons starting at temperatures well below the melting point. We have found a strong inhomogeneous dependence of the atom mobility in the particle crystal lattice increasing from the center to its surface upon the temperature growth. The plasmon resonance suppression is associated with an increase of the mobility and in the amplitude of phonon vibrations of the lattice atoms accompanied by electron-phonon scattering. This leads to an increase in the relaxation constant impeding the plasmon excitation as the major source of the suppression, while the direct contribution from the increase in the lattice constant and its chaotization at melting is found to be minor. Experimental verification of the suppression of surface plasmon resonance is demonstrated for gold nanoparticles on a quartz substrate heated up to the melting temperature and above.

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Держатели документа:
Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.
Royal Inst Technol, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden.
Fed Res Ctr KSC SB RAS, Inst Computat Modeling, Krasnoyarsk 660036, Russia.
Fed Res Ctr KSC SB RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Inst Chem Organometall Cpds, CNR ICCOM, Via G Moruzzi 1, I-56124 Pisa, Italy.
Fed Siberian Res Clin Ctr FMBA Russia, Kolomenskaya 26, Krasnoyarsk 660037, Russia.
Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden.

Доп.точки доступа:
Sorensen, Lasse K.; Khrennikov, Daniil E.; Gerasimov, Valeriy S.; Ershov, Alexander E.; Vysotin, M. A.; Высотин, Максим Александрович; Monti, Susanna; Zakomirnyi, Vadim, I; Polyutov, Sergey P.; Agren, Hans; Karpov, S. V.; Карпов, Сергей Васильевич; Russian Science FoundationRussian Science Foundation (RSF) [18-13-00363]; Carl Tryggers Stifetelse [CTS 18-441]; Swedish Research CouncilSwedish Research CouncilEuropean Commission [SNIC 2020/3-29]
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Charge-transfer plasmons of complex nanoparticle arrays connected by conductive molecular bridges / A. S. Fedorov, M. A. Visotin, E. V. Eremkin [et al.] // Phys. Chem. Chem. Phys. - 2022. - Vol. 24, Is. 32. - P. 19531-19540, DOI 10.1039/d2cp01811j. - Cited References: 43. - The work is supported (ASF, EVE, POK, and SPP) by the Russian Science Foundation (project no. 18-13-00363) . - ISSN 1463-9076
Кл.слова (ненормированные):
Charged nanoparticles -- Complex nanoparticles -- Coulombs energy -- External electromagnetic field -- Molecular bridges -- Molecular dynamics algorithms -- Molecular linkers -- Nanoparticle array -- Plasmon frequency -- Statistic approaches
Аннотация: Charge-transfer plasmons (CTP) in complexes of metal nanoparticles bridged by conductive molecular linkers are theoretically analysed using a statistic approach. The applied model takes into account the kinetic energy of carriers inside the linkers including its dissipation and the Coulomb energy of the charged nanoparticles. The plasmons are statistically investigated for systems containing a large number of complexes of bridged nanoparticles of realistic sizes generated using a simplified molecular dynamics algorithm, where the geometries of the complexes are dependent on the rate of connection of the linkers with the nanoparticles. As illustrated, the distribution of CTP frequencies in the generated nanoparticle complexes is very inhomogeneous. It has a narrow peak, corresponding to CTP plasmons in dimers, and two broad peaks, corresponding mainly to low and high-frequency oscillations in chains of connected nanoparticles. It is found that in general the plasmon frequencies depend inversely on the value of the complex dipole moment of the plasmon oscillation, where the assumption follows that low-frequency plasmons will be more efficiently excited in an external electromagnetic field. To calculate the CTP energy absorption in this field two model modifications are proposed: a system-external electromagnetic field interaction model and a simplified broadening plasmon peak model where the plasmons are calculated at first without damping and where the delta-shaped oscillation peaks are broadened then due to the damping. It is demonstrated that both modifications lead to a wide and almost monotonic absorption in the IR region for all generated systems containing a large number of bridged nanoparticles due to the presence of a large number of CTPs in this region.

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Держатели документа:
International Research Center of Spectroscopy and Quantum Chemistry - IRC SQC, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-751 20, Sweden
Federal Siberian Research Clinical Center under FMBA of Russia, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Visotin, M. A.; Высотин, Максим Александрович; Eremkin, E. V.; Krasnov, P. O.; Agren, H.; Polyutov, S. P.
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Feature of the endohedral metallofullerene Y@C82 and Gd@C82 polymerization under high pressure / V. V. Zhukov, S. V. Erohin, V. D. Churkin [et al.] // J. Phys. Chem. C. - 2022. - Vol. 126, Is. 40. - P. 17366-17373, DOI 10.1021/acs.jpcc.2c05139. - Cited References: 35. - The authors gratefully acknowledge the financial support of the RFBR (project identifier: 18-29-19080). V.D.C. acknowledges the support of the RFBR (project identifier: 20-32-90038). M.Y.P. acknowledges the support of the Ministry of Science and Higher Education of the Russian Federation in the framework of the State Task (project code 0718-2020-0037) for Raman study, interpretation, and discussion of obtained results and Russian Science Foundation (project #20-12-00097) for investigation of fullerite mechanical properties. V.V.Z., S.V.E., and P.B.S. acknowledge the support of the Ministry of Science and Higher Education of the Russian Federation in the framework of the strategic academic leadership program “Priority 2030” (no. K6-2022-041). The calculations were performed at the supercomputer cluster provided by the Materials Modeling and Development Laboratory at NUST “MISIS” and the Joint Supercomputer Center of the Russian Academy of Sciences. The authors thank the staff of the Information Technology Department of the Moscow Institute of Physics and Technology and express their gratitude to the Data Center Group for their help in performing calculations . - ISSN 1932-7447
Кл.слова (ненормированные):
Fullerenes -- Diamond anvil cell technique -- Endohedral metallofullerenes -- Experimental approaches -- Fullerene cages -- Gadolinia -- High bulk modulus -- High pressure -- Low pressures -- Polymerized material -- Theoretical approach -- Polymerization
Аннотация: In the present work, the polymerization of endohedral metallofullerenes (EMFs) with gadolinium (Gd@C82) and yttrium atoms (Y@C82) at high pressures achieved using the shear diamond anvil cell technique is studied using both theoretical and experimental approaches. It is found that in contrast to pure fullerenes, EMF polymerization starts at lower pressures with similar behavior for both metals inside the fullerene cage. EMF polymerization occurs smoothly and finally leads to a significant increase in the number of interfullerene bonds at pressures higher than ∼20 GPa. Finally, a high bulk modulus of both EMF-polymerized materials is obtained using Raman spectra.

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Держатели документа:
Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Moscow, 108840, Russian Federation
National University of Science and Technology MISiS, Moscow, 119049, Russian Federation
Moscow Institute of Physics and Technology, Dolgoprudniy, Moscow, 141701, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334, Russian Federation
Institute of Chemistry and Chemical Technology, The Siberian Branch of the RAS, Federal Research Center KSC Siberian Branch Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Zhukov, V. V.; Erohin, S. V.; Churkin, V. D.; Vnukova, N. G.; Внукова, Наталья Григорьевна; Antipina, L. Y.; Elesina, V. I.; Елесина, Виктория Игоревна; Visotin, M. A.; Высотин, Максим Александрович; Tomashevich, Y. V.; Popov, M. Y.; Churilov, G. N.; Чурилов, Григорий Николаевич; Sorokin, P. B.; Fedorov, A. S.; Федоров, Александр Семенович
}
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On the possible magnetic properties of ultrathin Mn2GaC films on Al2O3 substrates / M. A. Vysotin, I. A. Tarasov, A. S. Fedorov [et al.] // JETP Letters. - 2022. - Vol. 116, Is. 5. - P. 323-328, DOI 10.1134/S0021364022601488. - Cited References: 22. - This work was supported jointly by the Russian Foundation for Basic Research, Krasnoyarsk Territory Government, and Krasnoyarsk Regional Science Foundation (project no. 20-42-240012) and by the Ministry of Science and Higher Education of the Russian Federation (agreement no. 075-15-2019-1886, Project for Development of World-Class Laboratories) . - ISSN 0021-3640
Аннотация: The possibility of growth of thin Mn2GaC MAX phase films on Al2O3 substrates with various orientations and their magnetic properties have been studied. The most favorable orientation relationships and interface planes in the Mn2GaC//Al2O3 system, which indicate the possibility of growth on C-face (0001), S-face (011¯1¯), N‑face (112¯3¯), and R-face (01¯12¯) sapphire substrates, have been predicted within a geometric approach. Using the electron density functional method, the possible magnetic properties of continuous ultrathin Mn2GaC films have been calculated under the condition of conservation of uniform expansions/compressions of the MAX phase lattice, which are induced by growth on the predicted substrates. The effect of the deformation of the Mn2GaC lattice on magnetic ordering and magnetic moments has been determined, and the possibility of a transition from an antiferromagnetic to a ferromagnetic state under the action of external magnetic fields has been evaluated. It has been shown that the growth of the ferromagnetic film of the Mn2GaC MAX phase is the most probable on the Al2O3 (0001), Al2O3(112¯3¯), and Al2O3(01¯12¯) substrates.

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Публикация на русском языке О возможных магнитных свойствах ультратонких пленок Mn2GaC на подложках Al2O3 [Текст] / М. А. Высотин, И. А. Тарасов, А. С. Федоров [и др.] // Письма в ЖЭТФ. - 2022. - Т. 116 Вып. 5. - С. 318-323

Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Vysotin, M. A.; Высотин, Максим Александрович; Tarasov, I. A.; Тарасов, Иван Анатольевич; Fedorov, A. S.; Федоров, Александр Семенович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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10.

О возможных магнитных свойствах ультратонких пленок Mn2GaC на подложках Al2O3 / М. А. Высотин, И. А. Тарасов, А. С. Федоров [и др.] // Письма в ЖЭТФ. - 2022. - Т. 116, Вып. 5. - С. 318-323, DOI 10.31857/S1234567822170098. - Библиогр.: 22. - Исследования выполняются при финансовой поддержке Российского фонда фундаментальных исследований, Правительства Красноярского края, Красноярского краевого фонда науки в рамках научного проекта # 20-42-240012, Правительства РФ в рамках гранта по созданию лабораторий мирового уровня (соглашение # 075-15-2019-1886) . - ISSN 0370-274X
Аннотация: Рассматривается вопрос о возможности роста и магнитных свойствах тонких пленок MAX-фазы Mn2GaC на подложках Al2O3 различной ориентации. В рамках геометрического подхода спрогнозированы наиболее предпочтительные ориентационные соотношения и интерфейсные плоскости в системе Mn2GaC//Al2 O3, указывающие на возможность роста на подложках сапфира С-срез (0001), S-срез(01¯1¯1), N-срез (11¯2¯3), и R-срез (0¯11¯2). С помощью метода функционала электронной плотности рассчитаны возможные магнитные свойства сплошных ультратонких пленок Mn2GaC при условии сохранения однородных растяжений/сжатий решетки MAX-фазы,вызванных ростом на предсказанных подложках: определено влияние деформации решетки Mn2GaC на магнитное упорядочение и величины магнитных моментов, оценена возможность перехода из антиферромагнитного состояния в ферромагнитное под действием внешних магнитных полей. Показано, что рост ферромагнитной пленки MAX-фазы Mn2GaC наиболее вероятен на подложках Al2O3(0001), Al2O3(11¯2¯3) и Al2O3(0¯112¯).

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Переводная версия On the possible magnetic properties of ultrathin Mn2GaC films on Al2O3 substrates [Текст] / M. A. Vysotin, I. A. Tarasov, A. S. Fedorov [et al.] // JETP Letters. - 2022. - Vol. 116 Is. 5.- P.323-328

Держатели документа:
Институт физики им. Л. В. Киренского Сибирского отделения РАН, 660036 Красноярск, Россия
Сибирский федеральный университет, 660041 Красноярск, Россия

Доп.точки доступа:
Высотин, Максим Александрович; Vysotin, M. A.; Тарасов, Иван Анатольевич; Tarasov, I. A.; Федоров, Александр Семенович; Fedorov, A. S.; Варнаков, Сергей Николаевич; Varnakov, S. N.; Овчинников, Сергей Геннадьевич; Ovchinnikov, S. G.
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