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Aleksandrovsky, A. S.
Nonlinear optical processes and DUV generation in random domain structures of SBO / A. S. Aleksandrovsky // Conference on Lasers and Electro-Optics Europe - Technical Digest / Conference on Lasers and Electro-Optics (2015 ; may ; 10–15 ; San Jose, California, US) : IEEE-Institute Electrical and Electronics Engineers, 2015. - Vol. 2015-August. - Ст. 7184028, DOI 10.1364/CLEO_SI.2015.STh3H.1. - Cited References: 3 . - ISBN 9781557529688 (ISBN)

РУБ Engineering, Electrical & Electronic + Optics + Physics, Applied
Рубрики:
CRYSTAL
Кл.слова (ненормированные):
Correlation -- Nonlinear optics -- Optical diffraction -- Optical frequency conversion -- Optical harmonic generation -- Ultrafast optics
Аннотация: Random domain structures in orthorhombic strontium tetraborate (α-SBO) are capable in enhancing nonlinear optical conversion efficiency for large variety of processes throughout all transparency window of this material, down to 121 nm. Properties of the material, origin of domains, frequency doubling and autocorrelation measurements, conversion of supercontinuum to UV and continuously tunable VUV generation are described. Prospects of biphoton field generation in α-SBO are discussed. © 2015 OSA.

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Доп.точки доступа:
Александровский, Александр Сергеевич; Conference on Lasers and Electro-Optics(2015 ; May ; 10-15 ; San Jose, California, US)
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Arkhipkin, V. G.
Temporal shape manipulation of intense light pulses by coherent population trapping / V. G. Arkhipkin, I. V. Timofeev // Phys. Rev. A. - 2006. - Vol. 73, Is. 2. - Ст. 25803, DOI 10.1103/PhysRevA.73.025803. - Cited References: 37 . - ISSN 1050-2947

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
ELECTROMAGNETICALLY INDUCED TRANSPARENCY
   NONLINEAR FREQUENCY-CONVERSION
   DOUBLE-LAMBDA SYSTEM
   LASER-PULSES
   MEDIA
   PROPAGATION
   STORAGE
Аннотация: We describe how to control the temporal shape of adiabaton using peculiarities of propagation dynamics under coherent population trapping. Temporal compression is demonstrated as a special case of pulse shaping. The general case of unequal oscillator strengths of two optical transitions in an atom is considered.

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Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Архипкин, Василий Григорьевич
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Broadband frequency conversion in random nonlinear photonic crystals / A. S. Aleksandrovsky [et al.] // Laser Optics 2012. - 2012. - Ст. WeR1-p69. - P. 42

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Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Pospelov, G. I.; Поспелов Г.И.; Rovsky, V. E.; Ровский В.Е.; Slabko, V. V.; Слабко, Виталий Васильевич; "Laser Optics", International conference (15 ; 2012 ; June ; 25-29 ; St. Petersburg); "Оптика лазеров", Международная конференция (15 ; 2012 ; июнь ; 25-29 ; Санкт-Петербург)
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Broadband pulse conversion in 1d disordered nonlinear photonic crystals [Текст] / A. M. Vyunishev [и др.] // WE-Heraeus-Seminar: "Light in Disordered Photonic Media", 546. - 2013

Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Slabko, V. V.; Слабко, Виталий Васильевич; "Light in Disordered Photonic Media", 546. WE-Heraeus-Seminar (546 ; 2013 ; 2-4 dec ; Bad Honnef, Germany)
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    Ca/Sr ratio dependent structure and up-conversion luminescence of (Ca1-xSrx)In2O4 : Yb3+/Ho3+ phosphors / M. Guan [et al.] // RSC Adv. - 2015. - Vol. 5, Is. 73. - P. 59403-59407, DOI 10.1039/c5ra08467a. - Cited References:25. - This present work was supported by the National Natural Science Foundations of China (Grant no. 51202226), the Fundamental Research Funds for the Central Universities (Grant no. 2652014125, 2652013128, 2652013043), and the Research Fund for the Doctoral Program of Higher Education of China (Grant no. 20130022110006). . - ISSN 2046-2069
   Перевод заглавия: Структура зависящая от Ca/Sr соотношения и люминесценция с апконверсией в люминофоре (Ca1-xSrx)In2O4: Yb3+/Ho3+

РУБ Chemistry, Multidisciplinary
Рубрики:
CO-DOPED CAIN2O4
   ENERGY-TRANSFER
   PHOTOLUMINESCENCE
   EMISSION
   SRIN2O4
Аннотация: Up-conversion (UC) phosphors of (Ca1-xSrx)In2O4 : Yb3+/Ho3+ (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) were prepared. Based on the crystal structure evolution of these series solid solution samples, which were characterized by Rietveld refinement, the variation of UC luminescent properties was discussed in detail. Sr and Ca occupied one position and Yb/Ho dissolved in the In ion site in the (Ca1-xSrx)In2O4 lattice. With increasing Sr substituting Ca atoms, the cell parameters and cell volumes of these samples increased linearly, and distortions of (Ca/Sr)O-8 polyhedron were formed. The distortions on crystal structures showed a negative relation with UC luminescent intensities in these series phosphors.

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Держатели документа:
China Univ Geosci, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Sch Mat Sci & Technol, Beijing 100083, Peoples R China.
SB RAS, LV Kirensky Phys Inst, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Univ Auckland, Dept Chem & Mat Engn, Auckland 1142, New Zealand.

Доп.точки доступа:
Guan, Ming; Zheng, Hong; Huang, Zhaohui; Ma, Bin; Molokeev, M. S.; Молокеев, Максим Сергеевич; Huang, Saifang; Mei, Lefu
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    Catalytic properties and nature of active centers of ferrospheres in oxidative coupling of methane / A. G. Anshits [et al.] // Appl. Catal. A-Gen. - 2016. - Vol. 524. - P. 192-199, DOI 10.1016/j.apcata.2016.06.032. - Cited References:47. - This study was supported by the Russian Science Foundation (project no. 14-13-00289). . - ISSN 0926-860X. - ISSN 1873-3875
   Перевод заглавия: Каталитические свойства и природа активных центров ферросфер в оксидативной связи метана

РУБ Chemistry, Physical + Environmental Sciences
Рубрики:
GLASS CRYSTAL CATALYSTS
   MAGNETIC-PROPERTIES
   PROFILE REFINEMENT
   FLY-ASH
   MOSSBAUER
   MICROSPHERES
   PERFORMANCE
   CONVERSION
   ETHYLENE
   OXIDE
Кл.слова (ненормированные):
Methane coupling -- Active center -- Ferrospinel -- Mossbauer spectroscopy
Аннотация: Ferrospheres with the Fe2O3 content in the range from 76 to 97 wt% were applied as catalysts for the oxidative coupling of methane (OCM). To identify their phase composition and distribution of iron sites, the ferrospheres were characterized by X-ray powder diffraction and Mossbauer spectroscopy before and after the OCM reaction. Magnetite-based ferrite spinel, hematite and aluminosilicate glasses were established to be the main phases. The ferrospinel of all ferrospheres partially oxidized to hematite after the OCM reaction. It was established that the yield of C-2-hydrocarbons sharply increased at the ferrospheres with Fe2O3 content higher than 89 wt% The spinel phase of these ferrospheres includes Fevv3+(B) sites with a Ca2+ tetrahedral cation and an octahedral cation vacancy among the nearest neighbors. A linear correlation between the yield of C-2-hydrocarbons (ethane and ethylene) and the content of such sites was established, thus indicating that their electrophilic oxygen species participate in selective CH4 conversion to C2H6. (C) 2016 Elsevier B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Akad Gorodok 50-24, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Akad Gorodok 50-38, Krasnoyarsk 660036, Russia.
Univ Rostock, Leibniz Inst Katalyse eV, Albert Einstein Str 29 a, D-18059 Rostock, Germany.

Доп.точки доступа:
Anshits, A. G.; Bayukov, O. A.; Баюков, Олег Артемьевич; Kondratenko, E. V.; Anshits, N. N.; Pletnev, O. N.; Плетнев, Олег Николаевич; Rabchevskii, E. V.; Solovyov, L. A.; Russian Science Foundation [14-13-00289]
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    Conversion of magnetic anisotropy in electrodeposited Co-Ni alloy nanowires / A. S. Samardak [et al.] // J. Magn. Magn. Mater. - 2015. - Vol. 383. - P. 94-99, DOI 10.1010/j.jmmm.2014.10.047. - Cited References:24. - This work was supported in part by the Russian Ministry of Education and Science and Far Eastern Federal University. M.N acknowledges the student financial support of Iranian Nanotechnology Initiative Council. . - ISSN 0304. - ISSN 1873-4766
   Перевод заглавия: Конверсия магнитной анизотропии в электроосажденных нанонитях сплава CoNi

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
COBALT NANOWIRES
ARRAYS
Кл.слова (ненормированные):
Coercive force -- Magnetic anisotropy -- Magnetic hysteresis -- Binary alloy -- nanowires -- Alumina template -- Electrodeposition
Аннотация: In this paper, the influence of alternating current (ac) electrodeposition frequency and waveform is reported on chemical composition, microstructure and consequently magnetic properties of Co-Ni binary alloy nanowire arrays embedded in an alumina template. For sinusoidal and square electrodeposition waveforms the easy axis of magnetization rotates from being parallel to perpendicular orientation to nanowire long axis as the deposition frequency increases from 200 to 800 Hz. The reason for the drastic change of magnetic anisotropy in nanowires is attributed to the increase of cobalt content and the crystal structure phase transformation from fcc-hcp mixture at high Ni content to imp at high Co content. We explain the conversion of magnetic behavior of nanowire arrays in terms of a competition between the shape and magnetocrystalline anisotropies. (C) 2014 Elsevier B.V. All rights reserved.

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Держатели документа:
Far Eastern Fed Univ, Sch Nat Sci, Vladivostok, Russia.
Sahand Univ Technol, Fac Mat Engn, Tabriz, Iran.
SB Russian Acad Sci, Inst Phys, Krasnoyarsk, Russia.

Доп.точки доступа:
Samardak, A. S.; Nasirpouri, F.; Nadi, M.; Sukovatitsina, E. V.; Ognev, A. V.; Chebotkevich, L. A.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Russian Ministry of Education and Science; Far Eastern Federal University; Iranian Nanotechnology Initiative Council
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Conversion of radiation in nonlinear photonic crystals of strontium tetraborate / A. S. Aleksandrovsky [et al.] // CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference = Optics InfoBase Conference Papers. - 2009, DOI 10.1109/CLEOE-EQEC.2009.5196562 . - ISBN 9781424440801 (ISBN). - ISBN 21622701

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Держатели документа:
L. V. Kirensky Institute of Physics, Akademgorodok, 660036, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Slabko, V.V.; Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference(2009 ; Jun. ; 14-19 ; Munich)
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    Crystal structure characterization and up-conversion luminescent properties of BaIn2O4 phosphor / S. Chen [et al.] // J. Lumin. - 2017. - Vol. 192. - P. 218-223, DOI 10.1016/j.jlumin.2017.06.034. - Cited References: 29. - This present work was supported by the National Natural Science Foundations of China (Grant No. 51202226), the Fundamental Research Funds for the Central Universities (Grant nos. 2652016051, 2652016037), and Science and Technology Innovation Fund of the China University of Geosciences (Beijing) (Grant no. 201511415021). . - ISSN 0022-2313
   Перевод заглавия: Кристаллическая структура и апконверсионные люминесцентные свойства BaIn2O4
Кл.слова (ненормированные):
Crystal structure -- Up-conversion -- BaIn2O4
Аннотация: Er3+ / Yb3+ doped BaIn2O4 up-conversion (UC) phosphors are synthesized and their UC luminescent properties are characterized. BaIn2O4 has P21/c space group but Rietveld refinement suggests it has twice smaller cell parameter (a = 10.3975 Å, b = 5.8295 Å, c = 14.4457 Å) and volume than previous reported structure. Refinement also reveals Er3+/Yb3+ replaces In3+ ions in lattice because of the existence of InO6 octahedra. In these BaIn2O4 phosphors, co-doping with Yb3+ ions changes the predominant UC emission from green ( 2H11/2, 4S3/2 → 4I15/2 of Er3+) to red (about 665 nm, 4F9/2 → 4I15/2 of Er3+). By controlling of Er3+/Yb3+ concentrations, the BaIn2O4 phosphors have the potential of generating various UC spectra and color tunability. The pumping powers study shows two-photon process in these phosphors.

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Держатели документа:
School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences, Beijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation

Доп.точки доступа:
Chen, S.; Wang, W.; Wang, K.; Guan, M.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Mei, L.; Huang, Z.
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10.

DFT investigation of electronic structures and magnetic properties of halides family MeHal3 (Me=Ti, Mo,Zr,Nb, Ru, Hal=Cl,Br,I) one dimensional structures / A. A. Kuzubov [et al.] // J. Magn. Magn. Mater. - 2017. - Vol. 440: EURO-Asian Symposium on Trends in Magnetism (EASTMAG) (AUG 15-19, 2016, Siberian Fed Univ, Krasnoyarsk, RUSSIA). - P. 93-96, DOI 10.1016/j.jmmm.2016.12.054. - Cited References:16. - This work was supported by the Russian Science Foundation, Project no. 16-13-00060. N.S.M. thanks the Russian Foundation for Basic Research, project RFBR 16-32-60003 mol_a_dk, for the financial support of ZrIINF3/INF, TiIINF3/INF and NbIINF3/INF electronic structure calculations . - ISSN 0304-8853. - ISSN 1873-4766

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
INITIO MOLECULAR-DYNAMICS
TOTAL-ENERGY CALCULATIONS
AUGMENTED-WAVE
Кл.слова (ненормированные):
Transition metal trihalides -- Magnetic properties -- Thermoelectric -- conversion -- Density functional theory
Аннотация: Using DFT GGA calculations, electronic structure and magnetic properties of wide family of transition metal trihalides (TMHal3) (Zr, Ti and Nb iodides, Mo, Ru, Ti and Zr bromides and Ti or Zr chlorides) are investigated. These structures consist of transition metal atoms chains surrounded by halides atoms. Chains are connected to each other by weak interactions. All TMHal3 compounds were found to be conductive along chain axis except of MoBr3 which is indirect gap semiconductor. It was shown that NbI3 and MoBr3 have large magnetic moments on metal atoms (1.17 and 1.81 µB, respectively) but other TMHal3 materials have small or zero magnetic moments. For all structures ferromagnetic and anti-ferromagnetic phases have almost the same energies. The causes of these properties are debated.

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Доп.точки доступа:
Kuzubov, A. A.; Кузубов, Александр Александрович; Kovaleva, E. A.; Ковалева, Евгения Андреевна; Popova, M. I.; Kholtobina, A. S.; Mikhaleva, N. S.; Михалева, Наталья Сергеевна; Visotin, M. A.; Высотин Максим Александрович; Fedorov, A. S.; Федоров, Александр Семенович; Russian Science Foundation [16-13-00060]; Russian Foundation for Basic Research [RFBR 16-32-60003 mol_a_dk]; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН
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