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Nemtsev, A. V.
Ab initio study of the polarization, electronic, magnetic, and optical properties of perovskite SrMO3 (M = Fe, Mn) crystals and thin films containing magnetic ions / A. V. Nemtsev, V. S. Zhandun, V. I. Zinenko // J. Exp. Theor. Phys. - 2018. - Vol. 126, Is. 4. - P. 497-505, DOI 10.1134/S1063776118030056. - Cited References: 30 . - ISSN 1063-7761
Кл.слова (ненормированные):
Antiferromagnetism -- Density functional theory -- Electronic properties -- Iron compounds -- Manganese compounds -- Optical properties -- Perovskite -- Perovskite solar cells -- Polarization -- Strontium compounds
Аннотация: The magnetic, electronic, and polarization properties of the SrFeO3 and SrMnO3 compounds with a perovskite structure are calculated using the density functional theory in the bulk and thin-film states. A ferroelectric instability is found to be absent in the bulk state, and the polar mode is softened in the thin-film state of SrMnO3 in the presence of tensile stresses in the substrate. As a result, a polar phase with a polarization of 23 μC/cm2 appears, which agrees with experimental data. The study of the magnetic and electronic properties demonstrates the existence of G-type antiferromagnetic ordering in SrMnO3 and the appearance of a dielectric gap of about 1.5 eV in its thin film. A ferromagnetic phase with metallic conduction in both the bulk and thin-film states is detected in SrFeO3.

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Публикация на русском языке Немцев, Андрей В. Исследования ab initio электронных, магнитных и оптических свойств кристаллов и тонких пленок перовскитов SrMeOs (Me = Fe, Mn), содержащих магнитные ионы [Текст] / А. В. Немцев, В. С. Жандун, В. И. Зиненко // Журн. эксперим. и теор. физ. - 2018. - Т. 153 Вып. 4. - С. 605-614

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Zhandun, V. S.; Жандун, Вячеслав Сергеевич; Zinenko, V. I.; Зиненко, Виктор Иванович; Немцев, Андрей В.
}
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    About photocatalytic properties of some heterostructures based on strontium bismuthate / D. S. Shtarev [et al.] // Key Eng. Mater. - 2019. - Vol. 806 KEM. - P. 161-166, DOI 10.4028/www.scientific.net/KEM.806.161. - Cited References: 9. - The research was carried out at the expense of a grant from the Russian Science Foundation (project No. 17-73-00007). . - ISSN 1013-9826
   Перевод заглавия: О фотокаталитических свойствах некоторых гетероструктур на основе висмутата стронция
Кл.слова (ненормированные):
Alkaline earth metal bismuthate -- Diffuse reflectance spectroscopy -- Heterostructure -- Photocatalytic activity -- Strontium bismuthate -- Visible light active photocatalysts
Аннотация: In the work, some heterostructures consisting of two different strontium bismuthates from the following series are investigated: Sr2Bi2O5, Sr3Bi2O6 and Sr6Bi2O11. It is shown that the creation of such heterostructures affects both optical and photocatalytic properties. The results obtained are promising for the further development and research of new heterostructures based on two different strontium bismuthates and for studying the characteristics of their photocatalytic activity. © 2019 Trans Tech Publications Ltd, Switzerland

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Держатели документа:
Institute of Tectonics and Geophysics Named After Yu.A. Kosygin of Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk, Russian Federation
Far Eastern State Transport University, 47 Seryshev St., Khabarovsk, 680021, Russian Federation
Kirensky Institute of Physics, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Shtarev, D. S.; Shtareva, A. V.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Syuy, A. V.; Nashchochin, E. O.; Asian School-Conference on Physics and Technology of Nanostructured Materials(4 ; 2018 ; Sept. ; 23-28 ; Vladivostok)
}
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Acoustical and acoustooptical properties of lead tetraborate single crystals / K. S. Aleksandrov [et al.] // Phys. Solid State. - 2004. - Vol. 46, Is. 9. - P. 1637-1638, DOI 10.1134/1.1799178. - Cited References: 6 . - ISSN 1063-7834
Рубрики:
STRONTIUM
Аннотация: The velocities of bulk acoustic waves and the acoustooptical Q factors M-2 are measured. The results of these measurements are used for calculating the photoelastic coefficients of a lead tetraborate single crystal. (C) 2004 MAIK "Nauka/Interperiodica".

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Публикация на русском языке Акустические и акустооптические свойства монокристаллов тетрабората свинца [Текст] / К. С. Александров [и др.] // Физ. тверд. тела. - 2004. - Т. 46 Вып. 9. - С. 1586-1587

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660062, Russia

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Zamkov, A. V.; Замков, Анатолий Васильевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Turchin, P. P.; Sysoev, A. M.; Parfenov, A. A.
}
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    Calcium and strontium thiobarbiturates with discrete and polymeric structures / N. N. Golovnev [et al.] // J. Coordinat. Chem. - 2013. - Vol. 66. No. 23. - P. 4119–4130, DOI 10.1080/00958972.2013.860450 . - ISSN 4119-4130
   Перевод заглавия: Кальциевый и стронциевый тиобарбитураты с дискретной и полимерной структурами
Кл.слова (ненормированные):
Calcium -- 2-Thiobarbituric acid IR -- Crystal structure -- Thermal decomposition -- Strontium -- IR spectroscopy
Аннотация: Three new alkaline earth metal complexes, [Ca2(H2O)8(μ2-HTBA-O,O′)2(HTBA-O)2] (1), [Ca(H2O)5(HTBA-O)2]·2H2O (2), and [Sr(H2O)4(μ2-HTBA-O,S)2]n (3) (H2TBA = 2-thiobarbituric acid, C4H4N2O2S), were synthesized and characterized by FT-IR spectroscopy, TG-DSC, and single-crystal and powder X-ray diffraction analysis. The single-crystal X-ray diffraction data revealed that 1 and 2 are discrete structures, whereas 3 is a polymer. In 1 and 2, Ca2+ is seven-coordinate and forms a monocapped trigonal prism. In 1, the prisms are pairwise connected with the assistance of two [μ2-HTBA-O,O′]− ligands. In 3, Sr2+ is coordinated by four monodentate HTBA− via S or O donors and four waters, with the formation of a distorted square antiprism. The antiprisms are connected by μ2-O,S bridging HTBA−. Hydrogen bonding involving coordinated water and π–π interactions plays an important role in construction of the supramolecular 3-D structures in 1–3. Infrared spectroscopic data supported the structural data. The thermal stability of 1–3 decreases in the order 1 > 2 > 3. Dehydration of 1–3 was a multi-step process, followed by exothermic oxidative degradation of the 2-thiobarbiturate moiety between 290 and 800 °C.

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Держатели документа:
Siberian Fed Univ, Dept Chem, Krasnoyarsk, Russia
LV Kirenskii Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia
Inst Chem & Chem Technol, Lab Catalyt Convers Small Mol, Krasnoyarsk, Russia
Russian Acad Sci, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia;

Доп.точки доступа:
Golovnev, N. N.; Головнёв, Николай Николаевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Vereshchagin, S. N.; Atuchin, V. V.
}
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    Cerenkov nonlinear diffraction of femtosecond pulses / A. M. Vyunishev [et al.] // J. Opt. Soc. Am. B. - 2013. - Vol. 30, Is. 7. - P. 2014-2021, DOI 10.1364/JOSAB.30.002014. - Cited References: 43. - The work was partially supported by the Grant of the President of the Russian Federation MK-250.2013.2, by RFBR through Grant No. 12-02-31167, by the Ministry of Education and Science of the Russian Federation (Contract No. 14.B37.21.0730), by Krasnoyarsk Regional Fund of Science and Technical Activity Support, by PSB RAS Project 2.5.2, and by SFU Grant F12. . - ISSN 0740-3224
   Перевод заглавия: Черенковская нелинейная дифракция фемтосекундных импульсов

РУБ Optics
Рубрики:
STRONTIUM BARIUM NIOBATE
   2ND-HARMONIC GENERATION
   PHOTONIC CRYSTAL
   DOMAIN-WALLS
   MODULATION
Аннотация: Cerenkov nonlinear diffraction of femtosecond pulses in one-dimensional nonlinear photonic crystal of strontium tetraborate was studied theoretically and experimentally in both frequency and time domains. Spectral features of second harmonic radiation were measured in the course of mapping the nonlinear photonic crystal structure. The local second harmonic spectrum demonstrates complex angular behavior within the beam cross section. The spectral width of the second harmonic radiation is found to be fundamental beam size-dependent, and optimal focusing should be used for exact conversion of the fundamental spectrum into the second harmonic one. Experimental results are in excellent agreement with calculations. Maximum second harmonic generation efficiency was up to 2.1% at pumping by a femtosecond oscillator. (C) 2013 Optical Society of America

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

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
}
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Characterization of Domain Structure in Strontium Tetraborate Crystals via Nonlinear Diffraction / A. S. Aleksandrovsky, A. M. Vyunishev [et al.] // Известия высших учебных заведений. Физика. - 2008. - Т. 51, № 10/2. - P120-125

Доп.точки доступа:
Aleksandrovsky, A.S.; Vyunishev, A.M.; Zaitesv, A.I.; Zamkov, A.V.
}
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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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Deep UV generation and fs pulses characterization using strontium tetraborate / A. S. Aleksandrovsky [et al.] ; ed. V. V. Slabko // Proc. of SPIE. - 2011. - Vol. 8071. - Ст. 80710K, DOI 10.1117/12.886189. - Cited References: 12 . - ISSN 0277-786X. - ISSN 978-0-819

РУБ Optics
Рубрики:
CRYSTAL
Кл.слова (ненормированные):
nonlinear photonic crystal -- strontium tetraborate -- second harmonic generation -- random quasi phase matching -- ultrafast diagnostics
Аннотация: The properties of NPC structures in strontium tetraborate are analyzed. Different types of NPC structures are revealed that possess different nonlinear properties, and their spectral dependences of frequency conversion efficiency are calculated and compared. Experimental study of these structures is reported for the process of doubling of the second harmonic of fs Ti:S laser. Tuning of generated radiation is obtained in the range 187.5 - 232.5 nm, with extreme insensitivity to the angular orientation of NPC. Behavior of tuning curve along investigated fundamental wave range is similar in all studied samples, but efficiency obtained depends on the type of structure. Conversion efficiency and spectral quality of generated radiation is experimentally shown to grow better when using NPC with improved structure. Prospects of VUV converter on a single NPC are discussed. NPCs of SBO are demonstrated to be useful for autocorrelation diagnostics both in random QPM geometry and in the geometry of nonlinear diffraction from virtual beam.

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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; Ikonnikov, A. A.; Pospelov, G. I.; Slabko, V. V.; Слабко, Виталий Васильевич; Zhokhova, A. A.; Slabko, V. V. \ed.\; Nonlinear Optics and Applications (5 ; 2011 ; Apr. ; 19-21 ; Prague, Czech Republic)
}
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Deep UV generation and fs pulses characterization using strontium tetraborate [Text] / A. S. Aleksandrovsky, A. M. Vyunishev, A. I. Zaitsev [et al.] // Nonlinear Optics and Applications V : Proceedings of the SPIE. - 2011. - P36. - (SPIE Optics + Optoelectronics)
Аннотация: The properties of NPC structures in strontium tetraborate are analyzed. Different types of NPC structures are revealed that possess different nonlinear properties, and their spectral dependences of frequency conversion efficiency are calculated and compared. Experimental study of these structures is reported for the process of doubling of the second harmonic of fs Ti:S laser. Tuning of generated radiation is obtained in the range 187.5 - 232.5 nm, with extreme insensitivity to the angular orientation of NPC. Behavior of tuning curve along investigated fundamental wave range is similar in all studied samples, but efficiency obtained depends on the type of structure. Conversion efficiency andspectral quality of generated radiation is experimentally shown to grow better when using NPC with improved structure. Prospects of VUV converter on a single NPC are discussed. NPCs of SBO are demonstrated to be useful for autocorrelation diagnostics both in random QPM geometry and in the geometry of nonlinear diffraction from virtual beam.

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Ikonnikov, A.A.; Pospelov, G.I.; Slabko, V.V.; Zhokhova, A.A.; Nonlinear Optics and Applications(2011 ; Apr. ; 19-21 ; Prague)
}
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10.

Diagnostics of fs pulses by noncollinear random quasi-phase-matched frequency doubling / A. S. Aleksandrovsky [et al.] // Appl. Phys. Lett. - 2011. - Vol. 99, Is. 21. - Ст. 211105, DOI 10.1063/1.3664094. - Cited References: 12. - The work was supported by Ministry of Education and Science of Russian Federation (Contract No. 16.740.11.0150); Grant of President of Russian Federation for support of leading scientific schools Grant Nos. SS-4645.2010.2 and RNP.2.1.1.3455 and Projects Nos. 2.5.2 and 3.9.1 of PSB RAS and 27.1 and 5 of SB RAS. A. M. Vyunishev is grateful for the support from Krasnoyarsk Regional Fund of Science and Technical Activity Support. . - ISSN 0003-6951

РУБ Physics, Applied

Кл.слова (ненормированные):
Autocorrelation measurement -- Cross-correlation measurements -- Fs pulse -- Noncollinear -- Nonlinear photonic crystals -- Nonuniformity -- Quasi-phase-matched frequency doubling -- Random structures -- Tetraborate -- Vacuum ultraviolets -- Wide spectral range -- Band structure -- Frequency doublers -- Strontium -- Photonic crystals
Аннотация: Noncollinear random quasi-phase-matched frequency doubling in nonlinear photonic crystal (NPC) of strontium tetraborate (SBO) can be used for background-free autocorrelation measurements of ultrashort pulses in wide spectral range without any angular tuning of nonlinear photonic crystal. Nonuniformity of reciprocal superlattice vectors spectrum of random structure does not affect the accuracy of measurement. Nonlinear photonic crystals of strontium tetraborate are attractive medium for cross-correlation measurements in deep and vacuum ultraviolet. VC 2011 American Institute of Physics. [doi:10.1063/1.3664094]

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Держатели документа:
[Aleksandrovsky, A. S.
Vyunishev, A. M.
Zaitsev, A. I.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Aleksandrovsky, A. S.
Vyunishev, A. M.
Zaitsev, A. I.
Pospelov, G. I.
Slabko, V. V.] Siberian Fed Univ, Krasnoyarsk 660079, Russia
ИФ СО РАН
L. V. Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, 660079 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Pospelov, G. I.; Slabko, V. V.; Слабко, Виталий Васильевич
}
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11.

Diffusion of strontium in the intergranular boundaries of La2–xSrxCuO4 / A. A. Bykov, D. M. Gokhfeld, K. Y. Terent’ev [et al.] // Russ. J. Phys. Chem. A. - 2021. - Vol. 95, Is. 6. - P. 1165-1168, DOI 10.1134/S0036024421060066. - Cited References: 11. - This work was supported by the Russian Science Foundation, project no. 17-72-10067 . - ISSN 0036-0244
Кл.слова (ненормированные):
composites -- superconductivity -- diffusion -- grain boundaries -- diffusion front -- LSCO (La1.56Sr0.44CuO4)
Аннотация: Energy dispersive X-ray spectroscopy and scanning electron microscopy are used to study La2CuO4–La1.56Sr0.44CuO4 composites with different annealing times. Maps of the strontium distribution for such systems are calculated and compared to experimental data obtained for the area of contact between two dissimilar granules. The coefficient of lattice diffusion of strontium is found. At the areas of contact between La2CuO4 and La1.56Sr0.44CuO4 granules, the strontium concentration corresponds to superconducting phase La2−xSrxCuO4 with x = 0.05–0.25. The technological parameters of synthesis affect the size and number of superconducting and normal regions. Prolonged annealing lowers the gradient of the strontium concentration, which halts the increase in the size of the superconducting regions. This saturation confirms the diffusion front model.

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Публикация на русском языке Диффузия стронция в межгранульной границе La2−xSrxCuO4 [Текст] / А. А. Быков, Д. М. Гохфельд, К. Ю. Терентьев [и др.] // Журн. физ. химии. - 2021. - Т. 95 № 6. - С. 903-907

Держатели документа:
Petersburg Institute of Nuclear Physics, National Research Center Kurchatov Institute, Gatchina, 188300, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Bykov, A. A.; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Terent'ev, K. Yu.; Терентьев, Константин Юрьевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Petrov, M. I.; Петров, Михаил Иванович
}
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12.

Effect of mechanical activation on the thermoelectric properties of Sr1-xSmxTiO3 ceramics / Y. S. Orlov, S. N. Vereshchagin, S. V. Novikov [et al.] // Ceram. Int. - 2021. - Vol. 47, Is. 20. - P. 28992-28999, DOI 10.1016/j.ceramint.2021.07.060. - Cited References: 31. - This study was supported by the Russian Science Foundation, project no. 19-72-00097 . - ISSN 0272-8842. - ISSN 1873-3956

РУБ Materials Science, Ceramics
Рубрики:
SRTIO3
   LA
   MICROSTRUCTURE
   CONDUCTIVITY
   PERFORMANCE
   FIGURE
   MERIT
Кл.слова (ненормированные):
Strontium titanate solid solutions -- Thermoelectric oxide materials -- Mechanochemical activation
Аннотация: The Sr1-xSmxTiO3 (х = 0.025, 0.05, 0.075, 0.1, 0.2) strontium titanate solid solutions were prepared from oxides and carbonates using a conventional ceramic technology based on the mechanochemical activation. The electrical conductivity and Seebeck coefficient of the synthesized compounds were measured in the temperature range from 300 to 800 K. We found that the properties of the samples significantly depend on the preliminary mechanochemical activation. The thermoelectric power factor attains maximum value in the hydrogen reduced samples with concentration of х = 0.05 and 0.075 obtained from nanoparticles: 5.5 μW/(cm · K2) for Sr0.95Sm0.05TiO3 (580 K) and 4.10 μW/(cm · K2) for Sr0.925Sm0.075TiO3 (650 K). An increase in the annealing temperature of mechanically activated samples leads to an even greater increase in electrical conductivity and power factor: 9.2 μW/(cm · K2) for Sr0.925Sm0.075TiO3 (650 K).

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.
Ioffe Inst, St Petersburg 194021, Russia.

Доп.точки доступа:
Orlov, Yu. S.; Орлов, Юрий Сергеевич; Vereshchagin, S. N.; Novikov, S., V; Burkov, A. T.; Borus, A. A.; Борус, Андрей Андреевич; Sitnikov, M., V; Solovyov, L. A.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Russian Science FoundationRussian Science Foundation (RSF) [19-72-00097]
}
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13.

Effect of strontium and barium doping on the magnetic state and electrical conductivity of GdCoO3 / N. B. Ivanova [et al.] // Phys. Solid State. - 2007. - Vol. 49, Is. 8. - P. 1498-1506, DOI 10.1134/S1063783407080161. - Cited References: 36 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
PEROVSKITE
   ORDER
   OXIDE
   BEHAVIOR
   GLASSES
   LACOO3
   PR
   GD
   SM
   ND
Аннотация: A coordinated investigation of the magnetic and electrical properties of polycrystalline cobalt oxide compounds CdCoO3, Gd0.9Ba0.1CoO3, and Gd0.9Sr0.1CoO3 is carried out. Undoped GdCoO3 reveals a low conductivity; a magnetic moment of 7.4 mu(B) per molecule, which is less than the theoretical value for the Gd3+ ion; and an asymptotic Curie temperature of -6 K. Doping GdCoO3 with barium and strontium to substitution of 10 at. % Gd brings about an increase in the conductivity and magnetic transitions at T = 300 K for Gd0.9Ba0.1CoO3 and T = 170 K for Gd0.9Sr0.1CoO3. The magnetization anomalies imply the formation of magnetic clusters. The behavior of the electrical conductivity at high temperatures suggests a variable activation energy. At low temperatures, Mott hopping conduction sets in.

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Публикация на русском языке Влияние допирования стронцием и барием на магнитное состояние и электропроводность GdCoO[3] [Текст] / Н. Б. Иванова [и др.] // Физ. тверд. тела. - 2007. - Т. 49 Вып. 8. - С. 1427-1435

Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Univ Guadalajara, CUCEI, Dept Fis, Guadalajara 44430, Jalisco, Mexico
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Departmento de Fisica, C.U.C.E.I., Universidade de Guadalajara, Guadalajara, Jalisco 44430, Mexico

Доп.точки доступа:
Ivanova, N. B.; Иванова, Наталья Борисовна; Kazak, N. V.; Казак, Наталья Валерьевна; Michel, C. R.; Balaev, A. D.; Балаев, Александр Дмитриевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Bulina, N. V.; Булина, Наталья Васильевна; Panchenko, E. B.
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14.

Samoshkina, Yu. E.
Electronic and magnetic states of Pr and Mn in the Pr1–xSrxMnO3 films studied by XANES and XMCD spectroscopy / Y. E. Samoshkina, A. Rogalev // J. Exp. Theor. Phys. - 2018. - Vol. 126, Is. 5. - P. 660-665, DOI 10.1134/S1063776118040131. - Cited References: 35. - We thank V.I. Chichkov and N.V. Andreev (National University of Science and Technology MISiS) for the preparation of the manganite films. - This work was supported by the Russian Foundation for Basic Research (project no. 16-32-00209 mol_a) and a grant of the President of the Russian Federation (NSh-7559.2016.2). . - ISSN 1063-7761
Кл.слова (ненормированные):
Circular dichroism spectroscopy -- Dichroism -- Film growth -- Magnetic moments -- Manganese -- Praseodymium -- Strontium compounds -- X ray absorption
Аннотация: The spectral dependences of X-ray absorption near-edge spectroscopy (XANES) and X-ray magnetic circular dichroism (XMCD) and the field dependences of XMCD near the K edge of Mn and the L2,3 edges of Pr in the Pr0.8Sr0.2MnO3 and Pr0.6Sr0.4MnO3 films at T = 90 K are studied. The spectral dependences point to a mixed valence state of Mn and Pr in the films. It is found that, as compared to XANES, XMCD is more sensitive to the valence state of Pr4+. The field dependences of XMCD point to ferromagnetic behavior of Mn ions and the Van Vleck paramagnetism of Pr ions, which makes a significant contribution to the total magnetization of the films. It is shown that as the Sr concentration increases, the XMCD intensity at the K edge of Mn increases, which indicates a growth of the total magnetic moment of the film due to an increase in the 4p–3d hybridization.

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Публикация на русском языке Самошкина, Юлия Эрнестовна. Электронные и магнитные состояния Pr и Mn в пленках Pr1-xSrxMnO3 по данным спектроскопии XANES и XMCD [Текст] / Ю. Э. Самошкина, А. Л. Рогалев // Журн. эксперим. и теор. физ. - 2018. - Т. 153 Вып. 5. - С. 794-799

Держатели документа:
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center,” Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
European Synchrotron Radiation Facility, Grenoble, CS, France

Доп.точки доступа:
Rogalev, A.; Самошкина, Юлия Эрнестовна
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15.

Ovchinnikov, S. G.
Exotic superconductivity and magnetism in ruthenates / S. G. Ovchinnikov // Phys. Usp. - 2003. - Vol. 46, Is. 1. - P. 21-44, DOI 10.1070/PU2003v046n01ABEH001235. - Cited References: 167 . - ISSN 1063-7869

РУБ Physics, Multidisciplinary
Рубрики:
ITINERANT FERROMAGNET SRRUO3
   SPIN-TRIPLET SUPERCONDUCTIVITY
   STRONGLY CORRELATED ELECTRONS
   T-J-MODEL
   J-I-MODEL
   TRANSPORT-PROPERTIES
   MOTT-INSULATOR
   FERMI-SURFACE
   LAYERED PEROVSKITE
   RUTHENIUM OXIDES
Кл.слова (ненормированные):
Electronic structure -- Magnetic properties -- Magnetism -- Oxide superconductors -- Strontium alloys -- Superconductivity -- Electron correlations -- Ruthenates -- Rutheno-cuprates -- Spin-triplet pairing -- Ruthenium compounds
Аннотация: Basic experimental and theoretical results on ruthenates and rutheno-cuprates are reviewed. The electronic structure of various ruthenates and exotic superconductivity in Sr2RuO4 with spin-triplet pairing are described. The complex phase diagram of Ca2-xSrxRuO4, involving competing magnetic phases and metal-insulator transitions, is described, as are the exotic magnetic properties of Sr3Ru2O7 and of the double perovskite Sr2YRuO6, and the coexistence of superconductivity and magnetism in the rutheno-cuprate RuSr2GdCu2O8. Possible applications of Sr2RuO4 and SrRuO3 are considered. The effect of strong electron correlations is discussed, and the properties of ruthenates and cuprates are compared.

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Держатели документа:
Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
L V Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Овчинников, Сергей Геннадьевич
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16.

Frequency doubling of ultrashort pulses in a nonlinear photonic strontium tetraborate crystal / A. M. V'yunyshev [et al.] // Bull. Lebedev Phys. Inst. - 2010. - Vol. 37, Is. 3. - P. 85-86, DOI 10.3103/S106833561003005X. - Cited References: 6 . - ISSN 1068-3356
Кл.слова (ненормированные):
second harmonic generation -- ultrashort pulses -- nonlinear photonic crystal -- Nonlinear photonic crystal -- Second harmonic generation -- Ultrashort pulses
Аннотация: The second harmonic generation (SHG) of the femtosecond titanium-sapphire laser radiation was experimentally studied in the mode of nonlinear diffraction in the nonlinear photonic strontium tetraborate crystal. The spectrum of reciprocal lattice vectors of domain structures includes components responsible for the efficient frequency-tunable SHG in the spectral range of 355-510 nm. The maximum SHG efficiency was 1.9%. The SHG spectrum narrowing does not exceed 10-20%. The measured spectral dependence of the nonlinear diffraction angle is in good agreement with calculation.

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Публикация на русском языке Удвоение частоты ультракоротких импульсов в нелинейном фотонном кристалле тетрабората стронция [Текст] / А. М. Вьюнышев [и др.] // Кратк. сообщ. по физ. / изд. орг. - 2010. - № 3. - С. 35-38

Доп.точки доступа:
V'yunyshev, A. M.; Aleksandrovskii, A. S.; Александровский, Александр Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Rovskii, V. E.; Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; All-Russian Youth School Seminar on Innovative Aspects of Basic Research on Urgent Problems of Physics(3 ; 2009 ; Oct. 25-30 ; Moscow)
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17.

    Kuz'min, E. V.
    Frustrated antiferromagnetism in the Sr2YRuO6 double perovskite / E. V. Kuz'min, S. G. Ovchinnikov, D. J. Singh // J. Exp. Theor. Phys. - 2003. - Vol. 96, Is. 6. - P. 1124-1130, DOI 10.1134/1.1591224. - Cited References: 20. - This work was financially supported by the Russian Foundation for Basic Research (project no. 00-02-16110), RFFI-KKFN “Enisei” (project no. 02-02-97705), INTAS (grant 01-0654), and the Quantum Macrophysics Program of the Russian Academy of Sciences. . - ISSN 1063-7761
   Перевод заглавия: Фрустрированный антиферромагнетизм в двойном перовските Sr[2]YRuO[6]

РУБ Physics, Multidisciplinary
Рубрики:
SPIN-WAVE
HEISENBERG-MODEL
MOTT TRANSITION
Кл.слова (ненормированные):
Anisotropy -- Antiferromagnetism -- Magnetic moments -- Perovskite -- Thermal effects -- Antiferromagnctic structures -- Double perovskite -- Frustrated antiferromagnetism -- Heisenberg models -- Strontium compounds
Аннотация: The spins of Ru5+ ions in Sr2YRuO6 form a face-centered cubic lattice with antiferromagnetic nearest neighbor interaction J approximate to 25 meV. The antiferromagnetic structure of the first type experimentally observed below the Neel temperature T-N = 26 K corresponds to four frustrated spins of 12 nearest neighbors. In the Heisenberg model in the spin-wave approximation, the frustrations already cause instability of the antiferromagnetic state at T = 0 K. This state is stabilized by weak anisotropy D or exchange interaction I with the next-nearest neighbors. Low D/J similar to I/J similar to 10(-3) values correspond to the experimental T-N and sublattice magnetic moment values. (C) 2003 MAIK "Nauka/Interperiodica".

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Публикация на русском языке Кузьмин, Евгений Всеволодович. Фрустрированный антиферромагнетизм в двойном перовските Sr[2]YRuO[6] [Текст] / Е. В. Кузьмин, С. Г. Овчинников, Д. Дж. Сингх // Журнал экспериментальной и теоретической физики. - 2003. - Т. 123 Вып. 6. - С. 1278-1285

Держатели документа:
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
USN, Res Lab, Washington, DC 20375 USA
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Naval Research Laboratory, Washington, DC, United States

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Singh, D. J.
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18.

Generation of coherent radiation in the vacuum ultraviolet using randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // Opt. Lett. - 2016. - Vol. 41, Is. 3. - P. 618-621, DOI 10.1364/OL.41.000618. - Cited References:15 . - ISSN 0146-9592. - ISSN 1539-4794

РУБ Optics
Рубрики:
Crystal
SrB4O7
nm
Аннотация: Tunable coherent radiation is generated in the vacuum ultraviolet down to 121 nm using random quasi-phase matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. Relevant properties of this radiation, the nonlinear process, and the nonlinear crystal are investigated.

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Держатели документа:
Max Born Inst Nonlinear Opt & Ultrafast Spect, 2A Max Born Str, D-12489 Berlin, Germany.
LV Kirenskii Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Trabs, Peter; Noack, Frank; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, Valentin
}
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19.

Generation of coherent vacuum UV radiation in randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // Conference on Lasers and electro-optics (CLEO) : IEEE, 2015. - Cited References:6 . - ISBN 2160-9020

РУБ Engineering, Electrical & Electronic + Optics + Physics, Applied
Рубрики:
CRYSTAL
NM
Аннотация: Tunable coherent radiation is generated in the VUV down to 121 nm using random quasi-phase-matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. (C) 2015 Optical Society of America

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Доп.точки доступа:
Trabs, Peter; Noack, Frank; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, Valentin
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20.

Generation of coherent vacuum UV radiation in randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // Conference on Lasers and Electro-Optics Europe - Technical Digest. - 2015. - Vol. 2015-August . - ISSN 9781-5575
Кл.слова (ненормированные):
Crystals -- Frequency conversion -- Harmonic analysis -- Nonlinear optics -- Optical harmonic generation -- Optical pulses -- Wavelength measurement
Аннотация: Tunable coherent radiation is generated in the VUV down to 121 nm using random quasi-phase-matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. © 2015 OSA.

Scopus

Доп.точки доступа:
Trabs, P.; Noack, F.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, V.; Conference on Lasers and Electro-Optics(2015 ; May ; 10-15 ; San Jose, California, US)
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