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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Патрин, Геннадий Семёнович, Шиян, Ярослав Германович, Патрин, Константин Геннадьевич, Юркин, Глеб Юрьевич
Заглавие : Синтез и магнитные свойства пленок [(CoP)soft/NiP/(CoP)hard/ NiP]n
Коллективы : "Решетневские чтения", международная научно-практическая конференция
Место публикации : Решетневские чтения: материалы XIX Междунар. науч. конф. : в 2-х ч. - Красноярск: Сибирский государственный аэрокосмический университет им. акад. М. Ф. Решетнева, 2015. - Ч. 1. - С. 539-541. - ISSN 1990-7702
Примечания : Библиогр.: 5
Ключевые слова (''Своб.индексиров.''): магнитные гетероструктуры--петля гистерезиса--межслоевое взаимодействие--магнитная пружина--magnetic heterostructures--hysteresis loop--interlayer coupling--magnetic spring
Аннотация: В многослойных пленках Co-Ni-P обнаружено изменение формы петли намагничивания при сопряжении магнитомягкого и магнитожесткого слоев, введение немагнитной прослойки влияет на перемагничивание структуры. Делается вывод о необходимости учета биквадратичного взаимодействия при рассмотрении межслоевых взаимодействий.While studying the Co-Ni-P multilayers we found the variation in the shape of magnetization loop at the conjugation of magnetically soft and magnetically hard layers. The insertion of a nonmagnetic spacer significantly affects magnetization reversal in the structure. We conclude that it is necessary to take into account the biquadratic interaction in studying the interlayer coupling.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mikhaleva N. S., Visotin M. A., Kuzubov A. A., Popov Z. I.
Заглавие : VS2/7graphene heterostructures as promising anode material for Li-ion batteries
Место публикации : J. Phys. Chem. C. - 2017. - Vol. 121, Is. 43. - P.24179-24184. - ISSN 19327447 (ISSN), DOI 10.1021/acs.jpcc.7b07630
Примечания : Cited References: 64. - This work was supported by the government contract of the Ministry of Education and Science of the Russian Federation to Siberian Federal University (Grant No. 16.1455.2017/PCh). N. S. M. acknowledges the financial support of the RFBR, through the research project No. 16- 32-60003 mol-a-dk. M. A. V. acknowledges the financial support of the RFBR, through the research project No. 16-32- 00252 mol-a. Z. I. P. gratefully acknowledges the financial support of the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST MISiS (No. K2-2017-001) and the support of the RFBR through the research project No. 17-42- 190308 r-a.
Аннотация: Two-layer freestanding heterostructure consisting of VS2 monolayer and graphene was investigated by means of density functional theory computations as a promising anode material for lithium-ion batteries (LIB). We have investigated lithium atoms’ sorption and diffusion on the surface and in the interface layer of VS2/graphene heterostructure with both H and T configurations of VS2 monolayer. The theoretically predicted capacity of VS2/graphene heterostructures is high (569 mAh/g), and the diffusion barriers are considerably lower for the heterostructures than for bulk VS2, so that they are comparable to barriers in graphitic LIB anodes (∼0.2 eV). Our results suggest that VS2/graphene heterostructures can be used as a promising anode material for lithium-ion batteries with high power density and fast charge/discharge rates.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chernozatonskii L. A., Sorokin P. B., Bruning J. W.
Заглавие : Two-dimensional semiconducting nanostructures based on single graphene sheets with lines of adsorbed hydrogen atoms
Место публикации : Appl. Phys. Lett. - 2007. - Vol. 91, Is. 18. - Ст.183103. - ISSN 0003-6951, DOI 10.1063/1.2800889
Примечания : Cited References: 24
Предметные рубрики: CARBON
GAS
Ключевые слова (''Своб.индексиров.''): electronic properties--energy gap--graphite--hydrogen--semiconductor materials--superlattices--electronic spectra--graphene sheets--quasi-two-dimensional heterostructures--semiconducting nanostructures--nanostructured materials
Аннотация: It is shown that lines of adsorbed hydrogen pair atoms divide the graphene sheet into strips and form hydrogen-based superlattice structures (2HG-SL). We show that the formation of 2HG-SL changes the electronic properties of graphene from semimetal to semiconductor. The electronic spectra of "zigzag" (n,0) 2HG-SL is similar to that of (n,0) carbon nanotubes and have a similar oscillation of band gap with n, but with nonzero minimal values. The composite dual-periodic (n,0)+(m,0) 2HG-SLs of zigzag strips are analyzed, with the conclusion that they may be treated as quasi-two-dimensional heterostructures. (C) 2007 American Institute of Physics.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Begunovich L. V., Kuklin A. V., Visotin M. A., Kuzubov A. A., Tomilin F. N., Tarasov A. S., Mikhalev Y. G., Avramov P. V.
Заглавие : Triple VTe2/graphene/VTe2 heterostructures as perspective magnetic tunnel junctions
Место публикации : Appl. Surf. Sci. - 2020. - Vol. 510. - Ст.145315. - ISSN 01694332 (ISSN), DOI 10.1016/j.apsusc.2020.145315
Примечания : Cited References: 67. - This work was supported by the government contract of the Ministry of Science and Higher Education of the Russian Federation to Siberian Federal University (Grant No. 16.1455.2017/PCh ) and Russian Foundation for Basic Research , Government of Krasnoyarsk Territory , Krasnoyarsk Regional Fund of Science to the research project: “Quantum chemical modeling of Bychkov-Rashba interfaces based on transition metal compounds and nanoscaled organic fragments”. P.V.A. and A.V.K. gratefully acknowledges the financial support of National Research Foundation of Republic of Korea for support under Grant No. NRF-2017R1A2B4004440 . A.V.K. also acknowledges the US Air Force Office of Scientific Research (contract FA-9550-18-1-0032) for support. The authors would like to thank Information Technology Center, Novosibirsk State University, Institute of Computational Modelling of SB RAS, Krasnoyarsk for providing the access to supercomputer facilities, and Irkutsk Supercomputer Center of SB RAS for providing the access to HPC-cluster “Akademik V.M. Matrosov” (Irkutsk Supercomputer Center of SB RAS, Irkutsk: ISDCT SB RAS; http://hpc.icc.ru, accessed 13.05.2019 )
Аннотация: New perspective 1.4 nm thick spin-polarized triple heterostructures based on graphene sandwiched between two vanadium ditelluride monolayers (VTe2/graphene/VTe2) were studied using ab initio DFT technique. Both possible trigonal prismatic (H-VTe2) and octahedral (T-VTe2) VTe2 phases were considered to design and study graphene-based heterostructures. It was shown that the interaction with graphene changes the electronic structure of 2D T-VTe2 from metallic to half-metallic, making T phase perspective to be used for magnetic tunnel junctions. The electronic subsystem of graphene fragment is slightly hole doped. Calculated tunnel magnetoresistance ratio for the favorable heterostructure configuration estimated within the Julliere model is 220%, which opens a way to use VTe2/graphene/VTe2 as prospective magnetic tunnel junction in novel spintronic nanodevices based on tunnel magnetic resistance and spin transfer torque effects.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volochaev M. N., Granovsky A. B., Zhilova O. V., Kalinin Y. E., Ryl'kov V. V., Sumets M. P., Makagonov V. A., Pankov S. Y., Sitnikov A. V., Fadeev E., Lahderanta E., Foshin V.
Заглавие : Transport and magnetic phenomena in ZnO-С thin-film heterostructures
Место публикации : Superlattices Microstruct. - 2020. - Vol. 140. - Ст.106449. - ISSN 07496036 (ISSN), DOI 10.1016/j.spmi.2020.106449
Примечания : Cited References: 36. - The work was supported by the Ministry of Education and Science of Russia (project No. 3.1867.2017/4.6 ) and the RFBR (project No. 19-07-00471). The work was partially funded by the Academy of Finland
Аннотация: ZnO- and C-based heterostructures were fabricated by the layer-by-layer deposition technique using the ion-beam sputtering process. Structure, electrical and magnetic properties of fabricated heterostructures are discussed. The two-phase (ZnO and C) films are evolved into a multilayer structure, consisting of amorphous carbon and crystalline ZnO layers when the bilayer thickness increases. When carbon is added to ZnO, its electrical resistivity reduces. The conduction mechanism changes from the variable-range hopping in a narrow energy band to the nearest neighbors hopping in ZnO–C films with a thickness of h ˂ 150 nm. The temperature dependence of conductivity changes from the Arrhenius-like to logarithmic law, indicating that the strong charge localization turns into a weak one when the film thickness is about 150 nm. The negative magnetoresistance of up to 1% was detected at 77 K. The film ferromagnetism at the temperature of 10 K was not found.
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Вид документа : Статья из сборника (выпуск монографической серии)
Шифр издания :
Автор(ы) : Mikhaleva N. S., Visotin M. A., Popov Z. I.
Заглавие : Theoretical investigation of NiI2 based bilayer heterostructures
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials
Место публикации : Key Eng. Mater. - 2019. - Vol. 806 KEM. - P.10-16. - , DOI 10.4028/www.scientific.net/KEM.806.10
Примечания : Cited References: 38. - N. S. M. acknowledges the financial support of the RFBR project No. 16-32-60003 mol_a_dk.
Аннотация: The electronic structure of nickel iodide monolayer in NiI2/ScX2 (X = S, Se and Te) and NiI2/NiTe2 heterostructures was investigated by density functional theory (DFT). The spin-asymmetric semiconducting behavior of NiI2 monolayer in these interfaces was observed. The width of the band gap of the NiI2 monolayer practically does not change in heterostructures and remains at the level of 1.7 and 3.0 eV for minor and major spin channels, respectively. The NiI2 layer can be p-doped by stacking with ScX2 dichalcogenides. On the contrary, charge transfer (~0.01 |e| per f.u.) from NiTe2 leads to n-doping of NiI2. As a result, the Fermi level shifts up to the area of NiI2 conduction band with spin down carriers only, which gives prospects of using this material in spin filter applications. The electronic structure of NiI2/ScTe2 under isotropic deformation in the plane remains the same under tension and compression within 5%, except for a small change in the band gap in the composite layers of NiI2 within 25%. This allows one to conclude about the stability of the electronic properties under deformations, which gives possibility to use the heterostructures in flexible electronics devices. © 2019 Trans Tech Publications Ltd, Switzerland
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhilova O. V., Pankov S. Y., Sitnikov A. V., Kalinin Y. E., Volochaev M. N., Makagonov V. A.
Заглавие : Structure and electrophysical properties of thin-film SnO2–In2O3 heterostructures
Место публикации : J. Mater. Sci.: Mater. Electron. - 2019. - Vol. 30, Is. 13. - P.11859–11867. - ISSN 09574522 (ISSN) , DOI 10.1007/s10854-019-01503-w
Примечания : Cited References: 28. - The authors of the article want to express their gratitude to Professor S.A. Gridnev for helpful discussions. This work was supported by the Ministry of Education and Science in the framework of the state task (project No: 3.1867.2017/4.6).
Аннотация: The structure and electrical properties of In2O3 and SnO2 oxide semiconductors and heterostructures based on them has been experimentally investigated. The films were prepared by the method of layer-by-layer deposition using the ion-beam sputtering. The transition from the two-phase film of amorphous SnO2 and In2O3 islands, formed during the layer-by-layer deposition, to a multilayer structure consisting of the amorphous SnO2 and In2O3 continuous layers occurs with an increase in the bilayer thickness. The electrophysical properties of the (SnO2/In2O3)69 heterostructures are determined by the transition from the random distribution of SnO2 and In2O3 amorphous phases to a multilayer structure and the temperature range of measurement. For all studied systems, a consistent change in the prevailing mechanism of conductivity is observed at temperatures from 77 to 300 K. In (SnO2/In2O3)69 thin films with a bilayer thickness hbl ˂ 2.5 nm, change of the prevailing conduction mechanism takes place according to the next sequence: variable range hopping conduction over localized states near the Fermi level, hopping conduction over the nearest neighbors and hopping transfer of carriers excited into localized states near the band edges at temperatures close to room temperature.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volochaev M. N., Kalinin, Yu E., Kashirin M. A., Makagonov V. A., Pankov, S. Yu, Bassarab V. V.
Заглавие : Structure and Electrical Properties of (ZnO/SiO2)25 Thin Films
Коллективы : Ministry of Science and Higher Education of the Russian Federation [3.1867.2017/4.6]
Место публикации : Semiconductors. - 2019. - Vol. 53, Is. 11. - P.1465-1471. - ISSN 1063-7826, DOI 10.1134/S106378261911023X. - ISSN 1090-6479(eISSN)
Примечания : Cited References: 16. - This study was carried out in the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation, project no. 3.1867.2017/4.6.
Предметные рубрики: HETEROSTRUCTURES
Аннотация: (ZnO/SiO2)25 thin-film multilayers consisting of nanocrystalline ZnO layers and amorphous SiO2 spacers with a bilayer thickness from 6 to 10 nm are synthesized in a single deposition process. An analysis of the temperature dependences of the electrical resistivity of (ZnO/SiO2)25 thin films shows that, in the temperature range of 77–300 K, the dominant conductivity mechanism successively changes from hopping conductivity with a variable hopping length in a narrow energy band near the Fermi level at temperatures of 77–250 K to thermally activated impurity conductivity around room temperature. Using the obtained temperature dependences of the electrical resistivity, the effective density of localized states at the Fermi level and the activation energy of impurity levels are estimated. The effect of heat treatment on the structure and electrical properties of the synthesized films is examined. It is established that in (ZnO/SiO2)25 thin-film systems at temperatures of 580–600°C, the ZnO and SiO2 layers chemically interact, which is accompanied by destruction of the multilayer structure and formation of the Zn2SiO4 compound with a tetragonal structure (sp. gr. I-42d).
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Tomilin F. N., Kozak V., Ivanova D., Fedorova N., Shubin A.
Заглавие : Structural and electronic properties of the heterostructures based on Me2AlC-phase predicted by quantum chemistry calculations
Коллективы : International workshop on functional MAX-materials, Kirensky Institute of Physics, Siberian Federal Univercity
Место публикации : International workshop on the properties of functional MAX-materials (2nd FunMax): book of abstracts/ org. com. M. Farle [et al.]. - 2021. - P.49
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kuklin A. V., Kuzubov A. A., Fedorov A. S., Avramov P. V.
Заглавие : Spin polarization of zgnr4/lsmo(001) heterostructures: mno-terminated spinterface
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016): abstracts/ ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk: KIP RAS SB, 2016. - Ст.P10.28. - P.496. - ISBN 978-5-904603-06-9 (Шифр -478014040)
Примечания : References: 3
Ключевые слова (''Своб.индексиров.''): lsmo--zigzag graphene nanoribbons--dft--spin polarization--zgnr
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