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1.
Morphological and compositional
study at the Si/Fe interface of (Fe/Si) multilayer / L. Badia-Romano [et al.]> // SPIN. - 2014. -
Vol. 4
,
№ 1
. - P. 1440002
DOI
10.1142/S2010324714400025
Кл.слова (ненормированные):
Fe-Si interlayer
--
magnetic nanostructures
--
Fe silicides
--
reflectivity
--
conversion electron Möossbauer spectroscopy
Аннотация:
Diffusion and reaction of elements at the interfaces of nanostructured systems play an important role in controlling their physical and chemical properties for subsequent applications. (Fe/Si) nanolayers were prepared by thermal evaporation under ultrahigh vacuum onto a Si(100) substrate. A morphological characterization of these films was performed by combination of scanning transmission electron microscopy (STEM) and X-ray
reflectivity
(XRR). The compositional depth profile of the (Fe/Si) structures was obtained by angle resolved X-ray photoelectron spectroscopy (ARXPS) and hard X-ray photoelectron spectroscopy (HAXPES). Moreover, determination of the stable phases formed at the Si on Fe interfaces was performed using conversion electron Mössbauer spectroscopy. The Si/Fe interface thickness and roughness were determined to be 1.4 nm and 0.6 nm, respectively. A large fraction of the interface is composed of c-Fe1-xSi paramagnetic phase, though a minoritary ferromagnetic Fe rich silicide phase is also present.
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Доп.точки доступа:
Badía-Romano, L.; Rubin, J.; Bartolomé, F.; Bartolome, J.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Varnakov, S.N.; Варнаков, Сергей Николаевич; Magen, C.; Rubio-Zuazo, J.; Castro, G. R.
}
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2.
Three-wave mixing of
ordinary and backward electromagnetic waves: Extraordinary transients in the nonlinear
reflectivity
and parametric amplification / V. V. Slabko [et al.]> // Opt. Lett. - 2016. -
Vol. 41
,
Is. 17
. - P. 3976-3979,
DOI
10.1364/OL.41.003976 . - ISSN 0146-9592
Кл.слова (ненормированные):
Amplification
--
Circular waveguides
--
Electromagnetic waves
--
Mixing
--
Nonlinear optics
--
Phase matching
--
Reflection
--
Backward waves
--
Energy fluxes
--
Non-linear
reflectivity
--
Optical parametric amplification
--
Parametric amplification
--
Three wave mixing
--
Transient process
--
Optical parametric amplifiers
Аннотация:
Three-wave mixing of ordinary and backward electromagnetic waves in a pulsed regime is investigated in the metamaterials that enable the coexistence and phase-matching of such waves. It is shown that the opposite direction of phase velocity and energy flux in backward waves gives rise to extraordinary transient processes due to greatly enhanced optical parametric amplification and frequency up- and down-shifting nonlinear
reflectivity
. The differences are illustrated through comparison with the counterparts in ordinary, co-propagating settings. © 2016 Optical Society of America.
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Держатели документа:
Siberian Federal University, 79 Svobodny Av., Krasnoyarsk, Russian Federation
Birck Nanotechnology Center, Purdue University, 1205 W State St., West Lafayette, IN, United States
L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Slabko, V. V.; Слабко, Виталий Васильевич; Popov, A. K.; Tkachenko, V. A.; Myslivets, S. A.; Мысливец, Сергей Александрович
}
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3.
Flexible film broadband
absorber based on diamond-graphite mixture and polyethylene / A. A. Ivanenko [et al.]> // Opt. Mater. - 2017. -
Vol. 73
. - P. 388-392,
DOI
10.1016/j.optmat.2017.08.041. - Cited References: 54. - This study was supported by the Russian Foundation for Basic Research (Grants No. 16-32-00302 мол_а), by the Council for Grants of the President of the Russian Federation (SP-317.2015.1), by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 16-42-243059 р_мол_а and No. 16-48-242092 р_офи_м. . - ISSN 0925-3467
Кл.слова (ненормированные):
Flexible film broadband absorption
--
Diamond-graphite mixture
--
Polyethylene
--
Reflectivity
--
Transmittance
Аннотация:
Flexible film broadband absorber based on diamond-graphite mixture and polyethylene was fabricated by hot pressing. The film thickness of the absorber was 90 μm. We have measured angular
reflectivity
, diffusional
reflectivity
and transmittance in the range 85–8000 cm−1 (117–1.25 μm) in order to determine the absorption. It was shown that room temperature pressing of mesh print with 250 μm step significantly reduces
reflectivity
of the absorber. The absorption was over 0.85 in the range 85–320 cm−1 (117–31.25 μm) and >0.98 in the range 320–8000 cm−1 (31.25–1.25 μm). We believe that the designed and manufactured absorber might become a promising material for optical devices where high broadband absorption and flexibility are required.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Ivanenko, A. A.; Иваненко, Александр Анатольевич; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Pshenichnaia, A. A.; Пшеничная, Анастасия Александровна; Shestakov, N. P.; Шестаков, Николай Петрович
}
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4.
Infrared lattice dynamics
in negative thermal expansion material in single-crystal ScF3 / S. U. Handunkanda, E. B. Curry, V. Voronov, J. N. Hancock> // J. Phys.: Condens. Matter. - 2020. -
Vol. 32
,
Is. 3
. - Ст. 035403,
DOI
10.1088/1361-648X/ab4955. - Cited References: 49. - Work at the University of Connecticut is supported by National Science Foundation Award No. DMR-1506825 . - ISSN 0953-8984. - ISSN 1361-648X
РУБ
Physics, Condensed Matter
Рубрики:
LONGITUDINAL-OPTIC MODES
TEMPERATURE-DEPENDENCE
ABSORPTION
Кл.слова (ненормированные):
phonons
--
infrared
reflectivity
--
negative thermal expansion
--
optical properties
Аннотация:
Simple cubic 'open' perovskite ScF3 stands out among trifluoride materials in its large, isotropic negative thermal expansion (NTE), but also its proximity of its zero-temperature state to a structural phase transition. Here we report a temperature- and frequency-dependent lattice dynamical study of Brillouin zone center lattice excitations of single crystals of ScF3 using infrared
reflectivity
measurements. In addition to quantifying the mode strengths and energies in single crystals of this interesting material, we also find strong evidence for multiphonon absorption processes which excite the zone-edge incipient soft modes associated with NTE and the structural quantum phase transition. In this way, we identify an optically-allowed pathway to excite soft modes provides a means to athermally populate modes associated with NTE in ScF3.
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Держатели документа:
Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 66006, Russia.
Доп.точки доступа:
Handunkanda, Sahan U.; Curry, Erin B.; Voronov, V. N.; Воронов, Владимир Николаевич; Hancock, Jason N.
}
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5.
Photosensitivity and
reflectivity
of the active layer in a Tamm-plasmon-polariton-based organic solar cell / R. G. Bikbaev, S. Y. Vetrov, I. V. Timofeev, V. F. Shabanov> // Appl. Opt. - 2021. -
Vol. 60
,
Is. 12
. - P. 3338-3343,
DOI
10.1364/AO.421374. - Cited References: 49. - The reported study was funded by the grant of the President of Russian Federation No. MK-46.2021.1.2 and by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004 . - ISSN 1559-128X
Кл.слова (ненормированные):
Light sensitive materials
--
Mirrors
--
Phonons
--
Photons
--
Photosensitivity
--
Plasmons
--
Active Layer
--
Dielectric mirrors
--
Integral absorption
--
Lower boundary
--
Metal contacts
--
Photosensitive layers
--
Plasmon-polaritons
--
Organic solar cells
Аннотация:
We report on a model of an organic solar cell in which a photosensitive layer doped with plasmon nanoparticles acts as not only an absorbing element but also a mirror involved in the formation of the Tamm plasmon polariton. It is shown that such solar cells can be fabricated without metal contacts, thus avoiding undesired losses in the system. Methods for an additional increase in the integral absorption by applying metal or dielectric mirrors to the lower boundary of the photonic crystal are proposed. It has been found that the integral absorption in the active layer can be increased by15%compared to classical optimized planar solar cells.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Доп.точки доступа:
Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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