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1.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Семенов, Сергей Васильевич, Комогорцев, Сергей Викторович, Балаев, Александр Дмитриевич, Загорский Д. Л.
Заглавие : Магнитодипольное взаимодействие в двумерном ансамбле нанонитей железа
Коллективы : Байкальская международная конференция "Магнитные материалы. Новые технологии", "Магнитные материалы. Новые технологии", Байкальская международная конференция, "Magnetic materials. New tecnologies", Baikal International Conference, Иркутский государственный университет
Место публикации : Магнитные материалы. Новые технологии: тез. докл. IX Байкал. междунар. конф. BICMM-2023/ чл. прогр. ком.: S. S. Aplesnin [et al.] ; чл. орг. ком. R. S. Iskhakov [et al.]. - Иркутск, 2023. - С. 30. - ISBN 978-5-962402178-0, DOI 10.26516/978-5-9624-2178-0.2023.1-207
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Samardak A. S., Ognev A. V., Samardak A. Y., Stebliy E. V., Modin E. B., Chebotkevich L. A., Komogortsev S. V., Stancu A., Panahi-Danaei E., Fardi-Ilkhichy A., Nasirpouri F.
Заглавие : Variation of magnetic anisotropy and temperature-dependent FORC probing of compositionally tuned Co-Ni alloy nanowires
Место публикации : J. Alloys Compd. - 2018. - Vol. 732. - P.683-693. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2017.10.258
Примечания : Cited References: 60. - This work was supported by the Russian Foundation for Basic Research (grant 16-02-01015 А), by the Russian Ministry of Education and Science under the state task (3.5178.2017/8.9), by Act 211 of the Government of the Russian Federation (contract № 02.A03.21.0011) and by the Brain Pool Program (172S-2-3-1928) through the Korean Federation of Science and Technology Societies (KOFST) funded by the Ministry of Science, ICT and Future Planning. Financial support from Iranian Nanotechnology Initiative council is also acknowledged.
Ключевые слова (''Своб.индексиров.''): coercive force--magnetic anisotropy--magnetic hysteresis--binary alloy nanowires--alumina template--electrodeposition--first order reversal curves--stochastic magnetic domain--random anisotropy model
Аннотация: The magnetic microstructure of Co-Ni binary alloy nanowires electrodeposited with controlled composition into nanoporous aluminum oxide templates can be represented as an ensemble of stochastic magnetic domains, whose size is determined by the magnetic correlation length. Using a method based on the approaching of magnetization to saturation, we defined the dimension of regions with magnetic orientation coherency as the stochastic domain size. Based on the experimental measurements of magnetization curves near saturation and first order reversal curves (FORC), we described a relationship between the macroscopic and microscopic parameters of the nanowires depending on the crystal structure observed by high-resolution transmission electron microscopy in terms of the random anisotropy model. The alloy composition strongly determines the crystal structure, in particular, the grain size and hcp/fcc phase distribution, and influences the effective magnetic anisotropy energy providing the direction of easy magnetization in the nanowire arrays. The characterization of Co-Ni arrays by FORC method at room and low temperatures revealed the transformation of magnetic behavior and certain contributions to the energy of the effective magnetic anisotropy.
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3.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sorokin P.B., Kvashnin D.G., Kvashnin A.G.
Заглавие : Theoretical study of the elastic properties of branched silicon nanowires
Коллективы : "Fullerenes and Atomic Clusters", Biennial International Workshop
Место публикации : 9th Biennial International Workshop "Fullerenes and Atomic Clusters" (IWFAC 2009): July 6-10, 2009, St Petersburg, Russia : abstracts. - 2009. - Ст.P4.6. - С. 101
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sorokin P.B., Kvashnin D.G., Kvashnin A.G., Avramov P. V., Chernozatonskii L.A.
Заглавие : Theoretical study of elastic properties of SiC nanowires of different shapes
Место публикации : J. Nanosci. Nanotechnol. - 2010. - Vol. 10, Is. 8. - P.4992-4997. - ISSN 1533-4880, DOI 10.1166/jnn.2010.2424. - ISSN 1533-4899
Примечания : Cited Reference Count: 49. - Гранты: This work was partially supported by JSPS-RFBR collaborative grant 09-02-92107. The electronic structure calculations have been performed on the Joint Supercomputer Centre of the Russian Academy of Sciences. One of the authors (Pavel V. Avramov) acknowledges the encouragement of Professor K. Morokuma, research leader of Fukui Institute, Kyoto University and Dr. Alister Page for kind help and support. The geometry of all structures was visualized by ChemCraft software.SUP53/SUPФинансирующая организация: JSPS-RFBR [09-02-92107]; Fukui Institute, Kyoto University
Предметные рубрики: INITIO MOLECULAR-DYNAMICS
SILICON-CARBIDE
THERMAL-STABILITY
CARBON NANOTUBES
NANORODS
GROWTH
SURFACES
NANOCRYSTALS
POTENTIALS
CONSTANTS
Ключевые слова (''Своб.индексиров.''): silicon carbide--nanowires--elastic properties--dft--molecular mechanics--dft--elastic properties--molecular mechanics--nanowires--silicon carbide--atomic structure--cubic phasis--dft--effective size--elastic properties--sic nanowire--silicon carbide nanowires--theoretical study--wire geometries--young's modulus--crystal atomic structure--density functional theory--elastic moduli--elasticity--molecular mechanics--nanowires--wire--silicon carbide
Аннотация: The atomic structure and elastic properties of silicon carbide nanowires of different shapes and effective sizes were studied using density functional theory and classical molecular mechanics. Upon surface relaxation, surface reconstruction led to the splitting of the wire geometry, forming both hexagonal (surface) and cubic phases (bulk). The behavior of the pristine SiC wires under compression and stretching was studied and Young's moduli were obtained. For Y-shaped SiC nanowires the effective Young's moduli and behavior in inelastic regime were elucidated.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sorokin P.B., Kvashnin A.G., Kvashnin D.G., Filicheva J.A., Avramov P. V., Chernozatonskii L.A., Fedorov A. S.
Заглавие : Theoretical Study of Atomic Structure and Elastic Properties of Branched Silicon Nanowires
Место публикации : ACS Nano. - 2010. - Vol. 4, Is. 5. - P.2784-2790. - MAY. - ISSN 1936-0851, DOI 10.1021/nn9018027
Примечания : Cited Reference Count: 28. - Гранты: P.B.S. acknowledges partial support by the National Science Foundation grant CMMI-0708096, NIRT. L.A.C. was supported by the Russian Academy of Sciences, program No. 21. P.V.A. and P.B.S. also acknowledge the collaborative RFBR-JSPS Grant No. 09-02-92107-Phi. All calculations have been performed on the Joint Supercomputer Center of the Russian Academy of Sciences. The geometry of all presented structures was visualized by ChemCraft software.Финансирующая организация: National Science Foundation [CMMI-0708096]; NIRT; Russian Academy of Sciences [21]; RFBR-JSPS [09-02-92107-Phi]
Предметные рубрики: ELECTRONIC-PROPERTIES
BUILDING-BLOCKS
NANOCRYSTALS
Ключевые слова (''Своб.индексиров.''): silicon nanowires--elastic properties--molecular mechanics--tersoff potential--elastic properties--molecular mechanics--silicon nanowires--tersoff potential--atomic structure--branch length--elastic properties--interatomic potential--silicon nanowires--tersoff potential--theoretical study--young modulus--carbon nanotubes--elasticity--molecular mechanics--nanowires--stiffness--crystal atomic structure--nanowire--silicon--article--chemical structure--chemistry--conformation--elasticity--mechanical stress--young modulus--elastic modulus--elasticity--models, molecular--molecular conformation--nanowires--silicon--stress, mechanical
Аннотация: The atomic structure and elastic properties of Y-shaped silicon nanowires of "fork"- and "bough"-types were theoretically studied, and effective Young moduli were calculated using Tersoff interatomic potential. The oscillation of fork Y-type branched nanowires with various branch lengths and diameters was studied. In the final stages of the bending, the formation of new bonds between different parts of the wires was observed. It was found that the stiffness of the nanowires is comparable with the stiffness of Y-shaped carbon nanotubes.
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6.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sorokin P. B., Kvashnin D. G., Avramov P. V., Filicheva J. A., Chernozatonskii L. A.
Заглавие : The theoretical study of elastic properties of silicon nanowires
Коллективы : "Trends in Nanomechanics and Nanoengineering", workshop, Сибирский федеральный университет, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : Workshop "Trends in Nanomechanics and Nanoengineering": book of abstracts/ предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P.17
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7.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Filicheva J. A., Sorokin P. B.
Заглавие : The study of vibration properties of silicon nanowires
Коллективы : "Trends in Nanomechanics and Nanoengineering", workshop, Сибирский федеральный университет, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : Workshop "Trends in Nanomechanics and Nanoengineering" : book of abstracts/ предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P.35
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Komogortsev S. V., Chekanova L. A., Balaev A. D., Yuzova V. A., Semenova O. V.
Заглавие : The magnetic structure of ferromagnetic filaments of a CoNi(P) alloy in a porous silicon matrix
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2003. - Vol. 29, Is. 4. - P263-266. - ISSN 1063-7850, DOI 10.1134/1.1573285
Примечания : Cited References: 12
Предметные рубрики: RANDOM ANISOTROPY
NI NANOWIRES
NANOCRYSTALLINE
FILMS
CO
FE
Аннотация: The magnetic and resonance properties of CoNi(P) alloys, synthesized by chemical deposition as films on single crystal silicon substrates and as filaments in linear pores of porous silicon substrates, were studied by magnetization and ferromagnetic resonance measurements. It is established that CoNi(P) alloys of the same composition but different morphologies occur in states characterized by different degrees of nonequilibrium, which is manifested by different modes of the magnetization approach to saturation. (C) 2003 MAIK "Nauka / Interperiodica".
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9.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Nasirpouri F., Peighambari S. M., Sukovatitsina E. V., Samardak A. S., Chebotkevich L. A., Komogortsev S. V.
Заглавие : The influence of frequency and waveform on the structure and magnetic properties of cobalt nanowires produced by AC Electrodeposition
Коллективы : Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism
Место публикации : V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism: abstracts. - Vladivostok: FEFU, 2013. - P.131. - ISBN 978-5-7444-3124-2
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Glushchenko G. A., Leonova T. A., Kolonenko A. L., Dudnik A. I., Osipova I. V., Vnukova N. G., Nemtsev I. V., Zharkov S. M., Churilov G. N.
Заглавие : Synthesis of 6H-SiC single-crystal nanowires in a flow of carbon-silicon high-frequency arc plasma
Место публикации : Phys. Solid State: Pleiades Publishing, 2014. - Vol. 56, Is. 10. - P.2107-2111. - ISSN 1063-7834, DOI 10.1134/S106378341410014X. - ISSN 1090-6460
Примечания : Cited References: 34. - This study was supported by the National Academy of Sciences of Belarus and the Siberian Branch of the Russian Academy of Sciences within the framework of the Interdisciplinary Integration project no. 24.
Предметные рубрики: LARGE-SCALE SYNTHESIS
BETA-SIC NANOWIRES
FIELD-EMISSION PROPERTIES
CARBIDE NANOWIRES
NANORODS
GROWTH
NANOSTRUCTURES
FULLERENES
DISCHARGE
Аннотация: Silicon carbide 6H-SiC nanoparticles and nanowires were obtained in carbon-silicon high-frequency arc plasma plasma in a helium atmosphere at a pressure of 0.1-0.6 MPa. It was shown that 6H-SiC nanowires grow from the arc plasma, as well as from the vapor, according to the known mechanism of vapor-solid condensation on a cold surface covered with single-crystal silicon carbide nuclei. The content of silicon carbide nanowires in the condensate reached 60 wt %. The obtained single-crystal silicon 6H-SiC nanowires had the diameter of 15-18 nm and length of 200-600 nm.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sukhanova, Ekaterina, V, Visotin M. A., Popov, Zakhar, I, Sorokin, Pavel B.
Заглавие : Stability and gas sensing properties of Ta2X3M8(X = Pd, Pt; M = S, Se) nanoribbons: a first-principles investigation
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [17-72-20223]; RFBRRussian Foundation for Basic Research (RFBR) [17-33-50125 mol_nr]; Ministry of Education and Science of the Russian Federation of the NUST "MISiS" [K2-2019-016]
Место публикации : Phys. Chem. Chem. Phys. - 2020. - Vol. 22, Is. 26. - P.14651-14659. - ISSN 1463-9076, DOI 10.1039/d0cp01545h. - ISSN 1463-9084(eISSN)
Примечания : Cited References: 48. - We thank A. Khabibrakhmanov for comments that greatly improved themanuscript. The investigation of the TPS nanoribbon stability was supported by the Russian Science Foundation (Project identifier: 17-72-20223). The sensing properties of the nanoribbons were investigated with the financial support of the RFBR (17-33-50125 mol_nr) and Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST "MISiS" (No. K2-2019-016). The authors are grateful to the supercomputer cluster NUST "MISiS'' provided by Materials Modeling and Development Laboratory and to the Joint Supercomputer Center of the Russian Academy of Sciences
Предметные рубрики: TOTAL-ENERGY CALCULATIONS
STRUCTURAL EQUATION
FABRICATION
NANOWIRES
Аннотация: One dimensional Ta2(Pd/Pt)3(S/Se)8 nanoribbons (TPS-NR) are considered as a promising material in nanoelectronics due to their intrinsic semiconducting electronic properties. In this article, we study the stability of TPS-NR by considering their oxidation process. Our calculations showed that the Ta2(Pd/Pt)3Se8 nanoribbons are more environmentally stable than Ta2(Pd/Pt)3S8-NR. We studied the thermodynamics of the formation of monovacancies and their impact on the electronic properties of TPS-NR. Additionally, the sensing properties of environmentally stable Ta2Pd3Se8 nanoribbons were investigated. The observed changes of the electronic structure and transport properties after the adsorption of CO, NH3 and NO2 molecules reveal the mechanisms of possible application of Ta2Pd3Se8 nanoribbons as a gas sensor. The electronic transport properties of the nanoribbons exhibit a notable response to the presence of gas molecules.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zlotnikov A. O., Aksenov S. V., Shustin M. S.
Заглавие : Spin-orbit coupling-induced effective interactions in superconducting nanowires in the strong correlation regime
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-02-00348, 20-3270059]; Krasnoyarsk Territorial Foundation [19-42-240011, 18-42240014]; Government of the Krasnoyarsk Territory; Presidium of the Russian Academy of SciencesRussian Academy of Sciences [I.12]; Council for Grants of the President of the Russian Federation [MK-1641.2020.2]
Место публикации : Phys. Solid State. - 2020. - Vol. 62, Is. 9. - P.1612-1618. - ISSN 1063-7834, DOI 10.1134/S1063783420090371. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 24. - This study was supported by the Russian Foundation for Basic Research, projects nos. 19-02-00348 and 20-3270059, the Government of the Krasnoyarsk Territory and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activity, projects nos. 19-42-240011 and 18-42240014 "Single-Orbit Effective Model of an Ensemble of Spin-Polaron Quasiparticles in the Problem of Describing the Intermediate State and Pseudogap Behavior of Cuprate Superconductors,"and the Presidium of the Russian Academy of Sciences, program I.12 "Fundamental Problems of High-Temperature Superconductivity." S.V.A. thanks the Council for Grants of the President of the Russian Federation for Governmental Support of Young Russian Scientists, project no. MK-1641.2020.2
Аннотация: In the second order of the operator form of the perturbation theory, the effective interactions in a superconducting nanowire have been obtained at the strong electron correlations, when the spin-orbit coupling parameter is comparable with the hopping integral. Using the exact diagonalization technique, in short nanowires with the open boundary conditions at the strong Coulomb repulsion, the excitations corresponding to the Majorana edge states with the energy below the value of a bulk superconducting gap have been demonstrated.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanov A. A., Orlov V. A.
Заглавие : Self-organization of the magnetization in ferromagnetic nanowires
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН , RFBR [14-02-00238-a]
Место публикации : J. Magn. Magn. Mater.: Elsevier Science, 2017. - Vol. 440. - P.217-220. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2016.12.053. - ISSN 1873-4766(eISSN)
Примечания : Cited References:21. - This study was supported by RFBR, Project no. 14-02-00238-a
Предметные рубрики: SYSTEM
ANISOTROPY
Ключевые слова (''Своб.индексиров.''): domain wall--nanowire--magnetic inhomogeneities--stochastic domains
Аннотация: In this work we demonstrate the occurrence of the characteristic spatial scale in the distribution of magnetization unrelated to the domain wall or crystallite size with using computer simulation of magnetization in a polycrystalline ferromagnetic nanowire. This is the stochastic domain size. We show that this length is included in the spectral density of the pinning force of domain wall on inhomogeneities of the crystallographic anisotropy. The constant and distribution of easy axes directions of the effective anisotropy of stochastic domain, are analytically calculated.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Sadreev A. F.
Заглавие : Resonant bending of silicon nanowires by incident light
Место публикации : Opt. Lett. - 2020. - Vol. 45, Is. 19. - P.5315-5318. - ISSN 01469592 (ISSN), DOI 10.1364/OL.406109
Примечания : Cited References: 29
Аннотация: Coupling of two dielectric wires with a rectangular cross section gives rise to bonding and anti-bonding resonances. The latter is featured by extremal narrowing of the resonant width for variation of the aspect ratio of the cross section and distance between wires. A plane wave resonant to this anti-bonding resonance gives rise to unprecedent enhancement of the optical forces up to several nano Newtons per micrometer length of the wires. The forces oscillate with the angle of incidence of the plane wave but always try to repel the wires. If the wires are fixed at the ends, the light power 1.5mW/µm2 bends wires with length 50 µm by order 100 nm.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avramov P.V., Sorokin P.B., Fedorov D.G., Chernozatonskii L.A., Narumi K., Ovchinnikov S.G., Morokuma K.
Заглавие : Quantum dots embedded into silicon nanowires effectively partition electron confinement
Место публикации : J. Appl. Physics. - 2008. - Vol. 104. - С. 054305(6)
РИНЦ
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avramov P. V., Fedorov D. G., Sorokin P. B., Chernozatonskii L. A., Ovchinnikov S. G.
Заглавие : Quantum dots embedded into silicon nanowires effectively partition electron confinement
Коллективы :
Место публикации : J. Appl. Phys.: AMER INST PHYSICS, 2008. - Vol. 104, Is. 5. - Ст.54305. - ISSN 0021-8979, DOI 10.1063/1.2973464
Примечания : Cited References: 22. - This work was, in part, partially supported by a Core Research for Evolutional Science and Technology (CREST) grant in the area of high performance computing for multi-scale and multiphysics phenomena from the Japan Science and Technology Agency (JST) as well as by the Russian Fund of Basic Researches (Grant No. 05-02-17443) (L.A.C.). One of the authors (P.V.A.) acknowledges the encouragement of Dr. Keiji Morokuma, Research Leader at Fukui Institute. The geometry of all presented structures was visualized by ChemCraft software. SUP23/SUP L.A.C. acknowledges I. V. Stankevich for help and fruitful discussions. P.B.S. is grateful to the Joint Supercomputer Center of the Russian Academy of Sciences for access to a cluster computer for quantum-chemical calculations.
Предметные рубрики: OPTICAL-PROPERTIES
POROUS SILICON
WIRES
PREDICTION
GROWTH
Ключевые слова (''Своб.индексиров.''): electric currents--electric wire--electronic states--electronic structure--nanostructured materials--nanostructures--nanowires--nonmetals--optical waveguides--plasma confinement--quantum confinement--quantum electronics--semiconducting silicon compounds--silicon--electronic state--band gaps--electron confinements--electronic-structure calculations--embedded structures--quantum confinement effect--quantum dots--semi-empirical methods--silicon nanowires--silicon quantum dots--semiconductor quantum dots
Аннотация: Motivated by the experimental discovery of branched silicon nanowires, we performed theoretical electronic structure calculations of icosahedral silicon quantum dots embedded into pentagonal silicon nanowires. Using the semiempirical method, we studied the quantum confinement effect in the fully optimized embedded structures. It was found that (a) the band gaps of the embedded structures are closely related to the linear sizes of the longest constituting part rather than to the total linear dimension and (b) the discovered atypical quantum confinement with a plateau and a maximum can be attributed to the substantial interactions of near Fermi level electronic states of the quantum dots and nanowire segments. (c) 2008 American Institute of Physics.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shalygina T. A., Rudenko M. S., Nemtsev I. V., Parfenov V. A., Voronina S. Yu.
Заглавие : Plasma-chemical method of silicon carbide modification to obtain particles with controlled surface morphology
Место публикации : Tech. Phys. Lett. - 2022. - Vol. 48, Is. 2. - P.57-60. - ISSN 10637850 (ISSN), DOI 10.21883/TPL.2022.02.53582.19042. - ISSN 10906533 (eISSN)
Примечания : Cited References: 9. - This study was conducted under state assignment from the Ministry of Science and Higher Education of the Russian Federation for the ”Smart Materials and Structures“ research laboratory (project No. FEFE-2020-0015 ”Development of Multipurpose Smart Materials and Structures Based on Modified Polymer Composite Materials Remaining Functional in Extreme Conditions“)
Аннотация: A plasma-chemical method for the modification of silicon carbide particles is presented, which makes it possible to obtain particles with a controlled surface morphology. The variable parameter of particle processing was the ratio of the fraction of plasma-forming (Ar) and additional (H) gases. It was shown that at Ar/H = 100/0, the formation of a carbon shell is observed; at Ar/H ratios of 91/9 and 84/16, the particles are characterized by a carbon shell decorated with silicon nanoparticles or nanowires, respectively. The modified particles were analyzed using scanning electron microscopy and Raman spectroscopy.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanov A. A., Orlov V. A.
Заглавие : On the hierarchy of the characteristic lengths of nanowires magnetization
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2017. - Vol. 10, Is. 1. - P.60-64. - ISSN 1997-1397, DOI 10.17516/1997-1397-2017-10-1-60-64; Журн. СФУ. Сер. "Математика и физика"
Примечания : Cited References: 6. - РФФИ № гранта 14-02-00238_a
Аннотация: В компьютерном моделировании намагниченности в поликристаллической ферромагнитной нанопроволоке продемонстрировано возникновение характерного пространственного масштаба в распределении намагниченности, не связанной с размером доменной стенки или размером кристаллита. Это размер стохастического домена. Показано, что данная длина не только проявляется при анализе распределения намагниченности, но и содержится в спектральной плотности силы, закрепляющей доменную стенку на неоднородностях кристаллографической анизотропии. Аналитически вычислены параметры стохастического домена: константа и распределение направлений осей эффективной анизотропии.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanov A. A., Orlov V. A.
Заглавие : On features of magnetization self-organization in 1D stochastic ferromagnetic systems
Место публикации : Eur. Phys. J. B: Springer, 2017. - Vol. 90, Is. 3. - Ст.40. - ISSN 14346028 (ISSN), DOI 10.1140/epjb/e2017-70531-0
Примечания : Cited References: 31. - Sections 2, 4–6 of the work was supported by Russian Foundation for Basic Research (RFBR), Project No. 17-02-00254-a. Section 3 was supported by Russian Science Foundation, Project No. 14-15-00805.
Ключевые слова (''Своб.индексиров.''): anisotropy--crystallites--crystallography--magnetization--magnetostatics--characteristic length--crystallographic anisotropy--experimental techniques--ferromagnetic systems--magnetostatic interactions--polycrystalline nanowires--self organizations--stochastic domains--stochastic systems
Аннотация: The magnetic structure of a polycrystalline nanowire at the weak or missing magnetostatic interaction exhibits the special self-organization of magnetization. As is known, the magnetization structure forming in a random crystallographic anisotropy field has a characteristic length range, which involves tens and hundreds of crystallites. This leads to the occurrence of stochastic domains. The induced uniform anisotropy of magnetostatic nature or the texture co-directed with the crystallite anisotropy axes masks the picture of stochastic domains. Nevertheless, as we show, the information on stochastic domains remains in the magnetization structure. The experimental techniques for obtaining information on the magnetic properties of stochastic domains are proposed.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V., Mitskan V. A., Zlotnikov A. O., Shustin M. S., Aksenov S. V.
Заглавие : Occurrence of Topologically Nontrivial Phases, Cascade of Quantum Transitions, and Identification of Majorana Modes in Chiral Superconductors and Nanowires (Scientific Summary)
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [16-02-00073, 18-32-00443, 19-02-00348]; Government of the Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science [18-42-243017, 18-42-243018, 18-42-240014]; Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific SchoolsLeading Scientific Schools Program [MK-3722.2018.2, MK-3594.2018.2]
Место публикации : JETP Letters. - 2019. - Vol. 110, Is. 2. - P.140-153. - ISSN 0021-3640, DOI 10.1134/S002136401914011X. - ISSN 1090-6487(eISSN)
Примечания : Cited References: 88. - This work was supported by the Russian Foundation for Basic Research (project nos. 16-02-00073, 18-32-00443, 19-02-00348) and jointly by the Government of the Krasnoyarsk Territory, the Krasnoyarsk Regional Fund of Science (project no. 18-42-243017, "Manifestation of Coulomb Interactions and Effects of Bounded Geometry in the Properties of Topological Edge States of Nanostructures with Spin-Orbit Interaction"; project no. 18-42-243018, "Contact Phenomena and Magnetic Disorder in the Problem of the Formation and Detection of Topologically Protected Edge States in Semiconductor Nanostructures"; and project no. 18-42-240014, "Single-Orbit Effective Model of an Ensemble of Spin-Polaron Quasiparticles in the Problem of Describing the Intermediate State and Pseudogap Behavior of Cuprate Superconductors"). S.V. Aksenov and A. O. Zlotnikov acknowledge the support of the Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific Schools (project nos. MK-3722.2018.2 and MK-3594.2018.2).
Предметные рубрики: HUBBARD FERMIONS
BOUND-STATE
SPIN
POLARIZATION
COEXISTENCE
Аннотация: The problems of occurrence and experimental identification of topologically nontrivial phases in condensed matter have been reviewed. The results of the study of the effect of strong intra- and interatomic Coulomb interaction on a quantum phase transition with change in the topological index in an ensemble of Hubbard fermions on a triangular lattice have been reported. Nontrivial topology of the phase of coexistence of d + id chiral superconductivity and 120° spin ordering in a system with the triangular lattice has been discussed and the formation of Majorana modes in such a phase has been demonstrated. A cascade of quantum transitions that occurs at the variation of the magnetic field or the electrochemical potential has been analyzed for an open nanowire with the Rashba spin-orbit coupling and the induced superconducting pairing potential. It has been shown that anomalies of magneto- and electrocaloric effects are manifested near such quantum transitions and can be used to experimentally test materials on the existence of topologically nontrivial phases in them. The switching of the spin-polarized current in the topological superconducting phase has been predicted for a semimetal/superconducting wire/semimetal structure in the weak nonequilibrium regime.
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