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Вид документа : Статья из журнала
Шифр издания : 538.915/Т 33
Автор(ы) : Сержантова, Мария Викторовна, Кузубов, Александр Александрович, Федоров, Александр Семенович, Томилин, Феликс Николаевич, Краснов, Павел Олегович
Заглавие : Теоретическое исследование влияния деформации на электронную структуру монослоя гексагонального нитрида бора
Место публикации : Вестник Сибирского государственного аэрокосмического университета им. академика М.Ф. Решетнева. - Красноярск: Сибирский государственный аэрокосмический университет имени академика М.Ф. Решетнева, 2011. - № 3. - С. 150-155. - ISSN 1816-9724
ГРНТИ : 29.19
УДК : 538.915
Предметные рубрики:
Ключевые слова (''Своб.индексиров.''): адатомы--adatoms--hexagonal boron nitride monolayer (h-bn)--density functional theory (dft)--electronic structure--vacancies--монослой гексагонального нитрида бора (h-bn)--теория функционала плотности (dft)--электронная структура--вакансии
Аннотация: Работа посвящена исследованию влияния деформации на электронную структуру и свойства монослоя гексагонального нитрида бора, а также изучению поведения адатомов бора и азота на поверхности монослоя.Work is devoted research of influence of deformation on electronic structure and properties of a monolayer hexagonal boron nitride, and also to behavior studying adatoms of boron and nitrogen on a monolayer surface.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Fedorov A. S., Fedorov D. A., Eliseeva N. S., Kuzubov A. A.
Заглавие : Vacancies influence on elastic properties of graphene and their migration rate under deformation
Коллективы : "Advanced Carbon Nanostructures", Joint International Conference
Место публикации : Joint International Conference "Advanced Carbon Nanostructures" (ACN 2011): Abstracts. - 2011. - Ст.P1.09. - С. 78
Примечания : Библиогр.: 4
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzubov A. A., Serzhantova M. V., Fedorov A. S., Tomilin F. N., Kozhevnikova T. A.
Заглавие : Theoretical Study of Vacancies and Adatoms in White Graphene
Разночтения заглавия :авие SCOPUS: Theoretical study of vacancies and adatoms in white graphene
Место публикации : JETP Letters. - 2011. - Vol. 93, Is. 6. - P.335-338. - ISSN 0021-3640, DOI 10.1134/S0021364011060051
Примечания : Cited References: 35
Предметные рубрики: HEXAGONAL BORON-NITRIDE
INITIO MOLECULAR-DYNAMICS
BRILLOUIN LIGHT-SCATTERING
BN NANOTUBES
AB-INITIO
ELASTIC PROPERTIES
MONOLAYER
GRAPHITE
COMPRESSION
TRANSITION
Аннотация: The stability of the B and N atomic vacancies and divacancies in an h-BN monolayer deformed by 2 and 4% along one of the axes has been investigated. It has been established that the N atomic vacancies are most stable; their concentration is insignificant and does not affect the properties of white graphene. The number of vacancies depends on the mobility of N and B atoms on the layer surface; therefore, the probability of recombination with the vacancies has been estimated. It has been revealed that the energy barrier for the migration of the B and N adatoms is about 0.23 and 1.23 eV, respectively. In view of such a low barrier for the B adatom, this type of adatoms will quite rapidly move over the surface and recombine with vacancies, in contrast to the N adatoms. Therefore, only nitrogen atom vacancies can exist in the h-BN monolayer grown by the methods, where the adatoms could possibly appear on the surface.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Eliseeva N. S., Kuzubov A. A., Ovchinnikov S. G., Serzhantova M. V., Tomilin F. N., Fedorov A. S.
Заглавие : Theoretical study of the magnetic properties of ordered vacancies in 2D hexagonal structures: Graphene, 2D-SiC, and h-BN
Место публикации : JETP Letters. - 2012. - Vol. 95, Is. 11. - P.555-559. - ISSN 0021-3640, DOI 10.1134/S0021364012110045
Примечания : Cited References: 29
Предметные рубрики: INITIO MOLECULAR-DYNAMICS
METALS
TRANSITION
DEFECTS
STATE
Аннотация: The magnetic properties of vacancies in 2D hexagonal structures-graphene and 2D-SiC and h-BN monolayers-have been studied. It has been found that a local magnetic moment exists in all listed systems in the presence of vacancies. However, in 2D hexagonal silicon carbide, the local magnetic moment appears only in the presence of silicon vacancy. In addition, the effect of the distance between vacancies in a monolayer on transitions between the ferromagnetic and antiferromagnetic states has been revealed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Serzhantova M. V., Kuzubov A. A., Fedorov A. S., Krasnov P. O., Tomilin F. N.
Заглавие : Theoretical study of the influence of vacancies on the electronic structure of a hexagonal boron nitride monolayer
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 4. - P664-667. - ISSN 1063-7761, DOI 10.1134/S1063776111030150
Примечания : Cited References: 19
Предметные рубрики: INITIO MOLECULAR-DYNAMICS
TRANSITION
ALGORITHM
METALS
ENERGY
Ключевые слова (''Своб.индексиров.''): defect type--divacancies--forbidden band--hexagonal boron nitride--inhomogeneous distribution--nitrogen vacancies--spin densities--theoretical study--vacant levels--boron nitride--defects--deformation--density functional theory--electronic properties--electronic structure--magnetic moments--monolayers--nitrides--boron
Аннотация: The influence of boron and nitrogen vacancies and divacancies on the electronic structure of a hexagonal boron nitride h-BN monolayer is studied. In the presence of vacancies in the structure, the introduced states appear in the forbidden band. The position of an introduced state with respect to the upper occupied level and the lower vacant level depends on deformation. Calculations show that, depending on the defect type and the magnitude of the applied deformation, the introduced state can be both localized and not localized on atoms surrounding the defect. When the state is localized in the system, the inhomogeneous distribution of the spin density is observed, resulting in the appearance of the magnetic moment in the system.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzubov A. A., Avramov P. V., Nikolaeva K. M., Mikhaleva N. S., Kovaleva E. A., Kuklin A. V., Fedorov A. S.
Заглавие : Study of interaction between transition metal atoms and bigraphene monovacancy by means of quantum chemistry
Место публикации : Comput. Mater. Sci.: Elsevier, 2016. - Vol. 112, Part A. - P.269-275. - ISSN 0927-0256, DOI 10.1016/j.commatsci.2015.11.002
Примечания : Cited References: 39. - The authors would like to thank Siberian Supercomputer Center (SSCC) of SB RAS, Novosibirsk; and L.V. Kirensky Institute of Physics of SB RAS, Krasnoyarsk, for providing the access to their supercomputers. 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. 16.1500.2014/K).
Предметные рубрики: INITIO MOLECULAR-DYNAMICS
MASSLESS DIRAC FERMIONS
GRAPHENE
VACANCIES
POINTS
GAS
Ключевые слова (''Своб.индексиров.''): bigraphene--spintronics--transition metal--adsorption--migration
Аннотация: First-row transition metal atoms adsorption on bigraphene monovacancy was studied within the framework of DFT in periodic boundary conditions. Electronic and magnetic properties of composites were analyzed and their potential utilization in spintronics was discussed. Barriers of metal atoms migration from bigraphene surface to the interlayer space through the vacancy were estimated in order to consider both thermodynamic and kinetic aspects of composites experimental preparation. Formation of metal atoms inner-sorbed on bigraphene was found to demand harsh synthesis conditions; whereas outer-sorbed composites demonstrate significantly higher degree of spin polarization which makes them perspective for usage in spintronic devices. © 2015 Elsevier B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzubov A. A., Anan'eva Y. E., Fedorov A. S., Tomilin F. N., Krasnov P. O.
Заглавие : Quantum-chemical calculations on the stability and mobility of vacancies in graphene
Место публикации : Russ. J. Phys. Chem. A: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 86, Is. 7. - P.1088-1090. - ISSN 0036-0244, DOI 10.1134/S0036024412070126
Примечания : Cited References: 18
Предметные рубрики: INITIO MOLECULAR-DYNAMICS
TRANSITION
POINTS
METALS
LAYERS
Ключевые слова (''Своб.индексиров.''): graphene--defects--quantum-chemical simulation--deformations
Аннотация: Thermodynamic stabilities of mono- and bivacancies in graphene for deformed and nondeformed lattices are estimated by means of quantum-chemical calculations. Monovacancy hopping constants are evaluated in dependence on the applied uniaxial deformations.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Beznosikov B. V., Aleksandrov K. S.
Заглавие : Prediction of pra-phases of layered perovskite-like structures with cation vacancies
Место публикации : J. Struct. Chem. - 2002. - Vol. 43, Is. 1. - P.172-175. - ISSN 0022-4766, DOI 10.1023/A:1016098521933
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fedorov A. S., Fedorov D. A., Popov Z. I., Anan'eva Y. E., Eliseeva N. S., Kuzubov A. A.
Заглавие : Mobility of Vacancies under Deformation and Their Effect on the Elastic Properties of Graphene
Разночтения заглавия :авие SCOPUS: Mobility of vacancies under deformation and their effect on the elastic properties of graphene
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 5. - P820-824. - ISSN 1063-7761, DOI 10.1134/S1063776111040042
Примечания : Cited References: 35
Предметные рубрики: WALLED CARBON NANOTUBES
INITIO MOLECULAR-DYNAMICS
AB-INITIO
GRAPHITE SURFACES
DEFECTS
IRRADIATION
HYDROGEN
POINTS
Ключевые слова (''Своб.индексиров.''): ab initio--applied strain--density-functional methods--elastic properties--graphene sheets--linear dependence--potential barriers--transition state theories--young's modulus--elasticity--graphene
Аннотация: The effect of isolated vacancies on the elastic properties of a graphene sheet has been investigated by the ab initio density functional method. An almost inverse linear dependence of the Young's modulus on the concentration of vacancies has been revealed. The height of potential barriers for the motion of vacancies in various directions has been calculated as a function of various independent applied strains. The velocity of vacancies at various temperatures has been calculated as a function of applied strains using the transition state theory. DOI: 10.1134/S1063776111040042
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shabanov V. F., Korshunov M. A.
Заглавие : Mixed crystals of p-dichlorobenzene with p-bromchlorobenzene in the presence of vacancies in the structure
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2000. - Vol. 42, Is. 7. - P1277-1279. - ISSN 1063-7834, DOI 10.1134/1.1131376
Примечания : Cited References: 8
Аннотация: Polarization studies of low-frequency Raman spectra of solid solutions of p-dichlorobenzene with p-bromchlorobenzene (50% p-dichlorobenzene) were carried out. Analysis of the lattice vibration spectra of these mixed crystals shows that vacancies can be present in their structure. The presence of vacancies is responsible for the emergence of additional lines, including those in the 70 cm(-1) region. The calculation of the diffusion activation energy in a mixed crystal proves that its magnitude is determined by the spatial arrangement of p-bromchlorobenzene molecules in the lattice, their orientation relative to parahalides, and (to a lesser extent) temperature variations. (C) 2000 MAIK "Nauka/Interperiodica".
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