Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

в найденном

Найдено в других БД:

Каталог книг и брошюр библиотеки ИФ СО РАН (2)

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=strontium<.>)

Общее количество найденных документов : 69
Показаны документы с 1 по 20

Nonlinear photonic crystals of strontium tetraborate [Text] / A. S. Aleksandrovsky // International Workshop "Nonlinear photonics: theory, materials, applications" (NLP-2011) : Book of Abstracts. - 2011. - P40
Аннотация: Structural, optical and nonlinear optical properties of strontium tetraborate (SBO) single crystals are summarized. SBO presently is not considered to be a ferroelectric, however, domain structures consisting of alternating oppositely poled domains, strongly resembling those present in such ferroelectrics as potassium titanyl phosphate and lithium niobate, were recently discovered in this crystal. Such geometrical properties as orientation, size, and degree of randomization, of these domain structures are described. The problem of origin of domain structures in SBO is considered, as well as the possibility of their characteristics control. From the point of view of optical properties, domain-structured samples of strontium tetraborate are classified as randomized nonlinear photonic crystals. Comparative study of nonlinear diffraction and random quasi-phase-matching of nanosecond and femtosecond laser pulses in these nonlinear photonic crystals is presented. Prospects of creation of nonlinear optical converters of laser radiation into VUV spectral region based on domain structured strontium tetraborate are discussed.

Доп.точки доступа:
Aleksandrovsky, A.S.; "Nonlinear Photonics: Theory, Materials and Applications", Int. Workshop(2011 ; St. Petersburg)
}
Найти похожие

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)
}
Найти похожие

Phase matched conversion of radiation in nonlinear photonic crystals of strontium tetraborate / A. S. Aleksandrovsky [et al.] // Proceedings of SPIE - The International Society for Optical Engineering. - 2011. - Vol. 7993: ICONO 2010: International Conference on Coherent and Nonlinear Optics (23 August 2010 through 26 August 2010, Kazan, ) Conference code: 83828, DOI 10.1117/12.872943 . - ISBN 0277786X (ISSN); 9780819485663 (ISBN)
Кл.слова (ненормированные):
nonlinear photonic crystal -- random quasi phase matching -- second harmonic generation -- strontium tetraborate -- average power -- deep uv -- enhancement factor -- fs pulse -- monodomains -- nonlinear photonic crystals -- quasi-phase-matched frequency doubling -- radiation source -- random quasi phase matching -- rotational shift -- second harmonic generation -- tetraborate -- tuning ranges -- band structure -- harmonic generation -- nonlinear optics -- optical materials -- phase matching -- quantum optics -- strontium -- photonic crystals
Аннотация: Random quasi-phase-matched frequency doubling of fs pulses to the deep UV was obtained in 1D nonlinear photonic crystal (NPC) of strontium tetraborate. Tuning range of generated radiation is from 187.5 to 215 nm. The spectrum of generated radiation consists from series of peaks with the width of order of 1 A. These peaks are the manifestation of the NPC band structure. Using fs oscillator as the fundamental radiation source, maximum average power of generated radiation is of order 1 ?W, the enhancement factor with respect to monodomain sample being of order of several hundred. The red rotational shift of NPC band structure is experimentally demonstrated. © 2011 SPIE.

Scopus,
eLibrary,
Источник статьи,
WOS
Держатели документа:
Kirensky Institute of Physics, Akademgorodok 50/38, 660036, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodniy 79, 660041, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aleksandrovsky, A.S.; Vyunishev, A.M.; Zaitsev, A.I.; Ikonnikov, A.A.; Pospelov, G.I.; Slabko, V.V.
}
Найти похожие

    Phase formation upon crystallization of SrO center dot 2B(2)O(3) glasses / A. I. Zaitsev [et al.] // Crystallogr. Rep. - 2011. - Vol. 56, Is. 1. - P44-51, DOI 10.1134/S1063774511010263. - Cited Reference Count: 21 . - JAN. - ISSN 1063-7745
Рубрики:
STRONTIUM TETRABORATE
   LUMINESCENCE
   SRB4O7
   GROWTH
Кл.слова (ненормированные):
crystalline form -- crystalline formation -- crystalline phasis -- glass surfaces -- phase formations -- thermal analysis -- thermal stability -- crystalline materials -- crystallization -- glass -- thermoanalysis -- thermodynamic stability -- metastable phases
Аннотация: The crystallization of SrO center dot 2B(2)O(3) glasses has been studied. Four different crystalline formations were found to form simultaneously and independently on the glass surface: stable alpha-SrB4O7 crystals and metastable crystalline forms (beta-SrB4O7, Sr4B14O25, and spherulites (presumably, mixtures of crystalline phases)). The ranges of thermal stability of the newly formed metastable phases have been established using thermal analysis.

WOS,
Scopus,
eLibrary
Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Koroleva, N. S.
}
Найти похожие

    The trigonal polymorph of strontium tetraborate, beta-SrB4O7 [Text] / A. D. Vasiliev, A. V. Cherepakhin, A. I. Zaitsev // Acta Crystallogr. Sect. E.-Struct Rep. Online. - 2010. - Vol. 66, Part 6. - PI48-U132, DOI 10.1107/S1600536810019069. - Cited Reference Count: 22. - Гранты: We thank the State Program for Support of Leading Scientific Schools (grant LS-4645.2010.2.). - Финансирующая организация: Leading Scientific Schools [LS-4645.2010.2] . - JUN. - ISSN 1600-5368
Рубрики:
CRYSTAL-STRUCTURE
   SRB4O7
   LUMINESCENCE
   MODEL
Кл.слова (ненормированные):
Tetra
Аннотация: The asymmetric unit of the title compound, beta-SrB4O7, contains five Sr atoms (three located on a threefold rotation axis), twelve B and 21 O atoms. The structure is made up from BO3 triangles and BO4 tetrahedra in a 1:1 ratio. Pairs of BO3 triangles are linked to BO4 tetrahedra via common corners, forming chains. These chains are further linked to adjacent chains through corner-sharing, leading to a three-dimensional framework with channels running parallel to [001]. The Sr2+ ions reside in the channels and exhibit strongly distorted polyhedra The density of the beta-polymorph is considerably lower than that of beta-SrB4O7, which is constructed solely from BO4 tetrahedra.

WOS,
Scopus,
eLibrary
Держатели документа:
Inst Phys SB RAS, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Vasiliev, Alexander D.; Cherepakhin, Alexander V.; Zaitsev, Alexander I.
}
Найти похожие

Nonlinear photonic crystals of strontium tetraborate: Properties and conversion of radiation / A. S. Aleksandrovsky [et al.] // Proceedings of SPIE - The International Society for Optical Engineering. - 2010. - Vol. 7728: Nonlinear Optics and Applications IV (12 April 2010 through 15 April 2010, Brussels, ) Conference code: 81010, DOI 10.1117/12.853713 . - ISBN 0277786X (ISSN); 9780819482013 (ISBN)
Кл.слова (ненормированные):
nonlinear photonic crystal -- second harmonic generation -- strontium tetraborate -- As-grown -- Average power -- Domain shape -- Efficiency enhancement -- Femtoseconds -- Fourth harmonics -- Nonlinear diffraction -- Nonlinear optical process -- Nonlinear photonic crystals -- Quasi-phase-matched -- Second harmonic generation -- Tetraborate -- Ti: Sapphire laser -- Ti:sapphire oscillators -- Ferroelectricity -- Harmonic analysis -- Nonlinear optics -- Optical materials -- Photonic crystals -- Sapphire -- Strontium -- Harmonic generation
Аннотация: Random nonlinear photonic crystal (NPC) structures formed by as-grown domains in a non-ferroelectric strontium tetraborate (SBO) are investigated. The domain shape and orientation are similar to those in ferroelectric KTP. Nonlinear diffraction is the simplest way to detect, evaluate and characterize these structures. Reciprocal superlattice vectors spectra of NPC in SBO are very wide and enable broadband efficiency enhancement of nonlinear optical processes. Second harmonic (SH) generation of femtosecond Ti:sapphire oscillator radiation with 1.9% efficiency is obtained using nonlinear diffraction geometry. Random quasi phase matched generation at the wavelengths of fourth harmonic of Ti:sapphire laser is obtained with average power up to 1 ?W. © 2010 Copyright SPIE - The International Society for Optical Engineering.

Scopus,
eLibrary,
Источник статьи,
WOS
Держатели документа:
Kirensky Institute of Physics, Akademgorodok 50/38, 660036, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodniy 79, 660041, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aleksandrovsky, A. S.; Zaitsev, A. I.; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Vyunishev, A. M.; Rovsky, V. E.; Slabko, V. V.
}
Найти похожие

Nonlinear optics of randomly structured strontium tetraborate / A. S. Aleksandrovsky, A. M. Vyunishev, A. I. Zaitsev [et al.] // CLEO/Europe-EQEC 2011 : IEEE, 2011. - P84
Аннотация: Strontium tetraborate (SBO) is attractive for nonlinear optics of short-wavelength range including VUV due to its transparency window [1]. Nonlinear coefficients of SBO are the largest among crystals transparent below 270 nm. Angular phase matching is, however, absent in SBO, and the only possibility of conversion enhancement is to employ self-organized random nonlinear photonic crystal (NPC) structures discovered in SBO. These NPC are capable of two limiting cases of phase matching, namely, nonlinear diffraction (NLD) and random quasi phase matching (RQPM). NLD allows detection of NPCs and testing their reciprocal superlattice vectors (RSV) spectra via variation of the incidence angle. NLD conversion of broadband fs pulses of modest power from Ti:S oscillator results in 1.9% efficiency, being, to our knowledge, the best result obtained for this type of phase matching. RSV spectrum is wide enough to ensure NLD tunability from 355 to 510 nm. This spectrum is not flat, but the narrowing of the generated radiation spectrum due to non-flatness is rather modest.

Материалы конференции

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Ikonnikov, A. A.; Иконников, Антон Андреевич; Pospelov, G. I.; Slabko, V. V.; Слабко, Виталий Васильевич; Conference on Lasers and Electro-Optics Europe(2011 ; Jun. 21-25); European Quantum Electronics Conference(12 ; 2011 ; Jun. 21-25)
}
Найти похожие

Random quasi-phase-matched conversion of broadband radiation in a nonlinear photonic crystal / A. S. Aleksandrovsky [et al.] // Phys. Rev. A. - 2010. - Vol. 82, Is. 5, DOI 10.1103/PhysRevA.82.055806. - Cited Reference Count: 22. - Гранты: The work was supported by the Ministry of Education and Science of the Russian Federation (Contract 16.740.11.0150), Grant of the President of the Russian Federation for the support of leading scientific schools No. SS-4645.2010.2, Grant No. RNP.2.1.1.3455, Projects 2.5.2 and 3.9.1 of PSB RAS, and Projects No. 27.1 and No. 5 of SB RAS. A. M. Vyunishev is grateful for the support from Krasnoyarsk Regional Fund of Science and Technical Activity Support. - Финансирующая организация: Ministry of Education and Science of the Russian Federation [16.740.11.0150]; Russian Federation for the support of leading scientific schools [SS-4645.2010.2, RNP.2.1.1.3455]; PSB RAS [2.5.2, 3.9.1]; SB RAS [27.1, 5]; Krasnoyarsk Regional Fund of Science and Technical Activity . - ISSN 1050-2947
Кл.слова (ненормированные):
Broad spectrum -- Broadband radiation -- Femtosecond laser pulse -- Fundamental wave -- Nonlinear generation -- Nonlinear photonic crystals -- Quasi-phase-matched -- Quasi-phase-matched frequency doubling -- Red shift -- Shorter wavelength -- Tetraborate -- Tuning ranges -- Vacuum ultraviolets -- Band structure -- Crystal structure -- Strontium -- Ultrafast lasers -- Ultrashort pulses -- Photonic crystals
Аннотация: Radiation in the range 187.5-215 nm was generated via random quasi-phase-matched frequency doubling of femtosecond laser pulses in nonlinear photonic crystals of strontium tetraborate. Abroad spectrum of fundamental radiation favors the probing of the nonlinear photonic crystal band structure. The red shift of the band structure upon the fundamental wave-vector rotation was observed. No principal limitations of the tuning range at its shorter wavelength boundary from the nonlinear photonic crystal (NPC) material are found. Calculation shows that the NPC structure enables enhancement of nonlinear generation in the vacuum ultraviolet.

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

Доп.точки доступа:
Aleksandrovsky, A.S.; Vyunishev, A.M.; Zaitsev, A.I.; Slabko, V.V.
}
Найти похожие

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).

Смотреть статью,
WOS,
Читать в сети ИФ
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]
}
Найти похожие

10.

    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

Смотреть статью,
Scopus,
Читать в сети ИФ
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)
}
Найти похожие

11.

    Phenomenological rule from correlations of conduction/valence band energies and bandgap energies in semiconductor photocatalysts: calcium bismuthates versus strontium bismuthates / D. S. Shtarev, V. K. Ryabchuk, A. V. Rudakova [et al.] // ChemCatChem. - 2020. - Vol. 12, Is. 6. - P. 1551-1555, DOI 10.1002/cctc.201902236. - Cited References: 13. - The research was supported from a grant from the Russian Science Foundation (project No. 19-73-10013). We are very grateful to the staff of the Khabarovsk Innovation and Analytical Center of the Yu. A. Kosygin Institute of Tectonics and Geophysics FEB RAS, and of the Research Center on Nanophotonics and the Center for Physical Methods of Surface Investigation (to Dr. Alexandra Koroleva) of the Research Park at Saint-Petersburg State University for their valuable assistance in carrying out the research and in providing the needed equipment. VKR and AVR acknowledge financial support from a grant by the Saint-Petersburg State University (Pure ID 39054581). One of us (NS) thanks Prof. A. Albini and the staff of the PhotoGreen Laboratory of the University of Pavia for their continued hospitality . - ISSN 1867-3880. - ISSN 1867-3899
   Перевод заглавия: Феноменологическое правило из соотношений энергий проводимости / валентной зоны и энергий запрещенной зоны в полупроводниковых фотокатализаторах: висмутаты кальция против висмутатов стронция

РУБ Chemistry, Physical
Рубрики:
STRUCTURAL-PROPERTIES
Кл.слова (ненормированные):
calcium bismuthates -- strontium bismuthates -- bandgap energies -- semiconductor photocatalysts -- linear correlation of ECB/EVB with Ebg
Аннотация: A number of calcium bismuthates were synthesized (25 to 50 mol% in Ca) and characterized by XRD, SEM, EDX, XPS and DRS techniques; the latter provided an estimate of the bandgap energies (Ebg=2.41 to 3.29 eV) via Tauc plots for indirect transitions, whereas XPS established the potentials (vs NHE) of their respective valence bands (and thus the conduction bands). Linear correlations existed between EVB/ECB and Ebg that when compared with those of strontium bismuthates (reported earlier) showed that differences in energies at Ebg=0 eV are related to the difference in the absolute electronegativities of Ca and Sr, from which the following empirical phenomenological rule is postulated: replacing one alkaline earth metal in bismuthates by another causes the points of intersection of the linear correlations ECB(Ebg) and EVB(Ebg) to be displaced by an amount equal to twice the difference in absolute electronegativities of these metals.

Смотреть статью,
WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Yu A Kosygin Inst Tecton & Geophys, Far Eastern Branch, 65 Kim Yu Chen St, Khabarovsk 680063, Russia.
Far Eastern State Transport Univ, 47 Seryshev St, Khabarovsk 680021, Russia.
St Petersburg State Univ, Dept Photon, Ulyanovskaya 1, St Petersburg 198904, Russia.
St Petersburg State Univ, Lab Photoact Nanocomposite Mat, Ulyanovskaya 1, St Petersburg 198904, Russia.
Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Mat Sci, Khabarovsk Sci Ctr, Far East Branch, 153 Tihookeanskaya St, Khabarovsk 680000, Russia.
Univ Pavia, Dipartimento Chim, PhotoGreen Lab, Via Taramelli 12, I-27100 Pavia, Italy.

Доп.точки доступа:
Shtarev, D. S.; Ryabchuk, V. K.; Rudakova, A. V.; Shtareva, A. V.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Kirichenko, E. A.; Serpone, N.; Russian Science FoundationRussian Science Foundation (RSF) [19-73-10013]; Saint-Petersburg State University [39054581]
}
Найти похожие

12.

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.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

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
}
Найти похожие

13.

    Solid-state synthesis, characterization, UV-induced coloration and photocatalytic activity – The Sr6Bi2O11, Sr3Bi2O6 and Sr2Bi2O5 bismuthates / D. S. Shtarev [et al.] // Catal. Today. - 2020. - Vol. 340. - P. 70-85, DOI 10.1016/j.cattod.2018.09.035. - Cited References: 52. - The research was kindly funded by a grant from the Russian Science Foundation (project No. 17-73-00007). P.D. Murzin, A.V. Rudakova and V.K. Ryabchuk are grateful for financial support by the Mega-grant (No. 14.Z50.31.0016 ) from the Government of the Russian Federation within the Project “Establishment of the Laboratory of Photoactive Nanocomposite Materials” . The authors are very grateful to the staff of the Khabarovsk Innovation and Analytical Center of the Yu. A. Kosygin Institute of Tectonics and Geophysics FEB RAS, and the Resource Centers of the Research Park at the Saint-Petersburg State University: (i) Center for Diagnostics of Functional Materials for Medicine, Pharmacology and Nanoelectronics, (ii) Center for Physical Methods of Surface Investigation, (iii) Center for Optical and Laser Materials Research, and (iv) the Nanophotonics Center for their valuable assistance in carrying out the research and in providing the needed equipment. One of us (NS) is grateful to Prof. Angelo Albini for his continued hospitality in the PhotoGreen Laboratory at the University of Pavia, Italy. . - ISSN 0920-5861
   Перевод заглавия: Твердотельный синтез, характеризация, УФ-окрашивание и фотокаталитическая активность висмутатов Sr6Bi2O11, Sr3Bi2O6 и Sr2Bi2O5
Кл.слова (ненормированные):
Photocatalysts -- Strontium bismuthates -- Photocatalytic activity -- UV-induced coloration
Аннотация: This article reports on two novel strontium bismuthate photocatalysts (Sr6Bi2O11 and Sr3Bi2O6) prepared by a solid-state synthesis for which the number of strontium atoms exceeds the number of bismuth atoms in the cation sublattice; for comparison, the bismuthate Sr2Bi2O5 was also re-examined. All three bismuthates were characterized by a variety of spectroscopic techniques (XRD, XPS, EDX, DR, Raman, SEM, and EIS). Direct bandgap energies for the three bismuthates were assessed from diffuse reflectance spectra: 2.61 eV for Sr6Bi2O11; 3.40 eV for Sr3Bi2O6; 3.17 eV for Sr2Bi2O5, while the flatband potentials (versus NHE) of the corresponding valence bands were estimated from XPS spectra: +2.22 eV for Sr6Bi2O11; +1.71 eV for Sr3Bi2O6; +1.61 eV for Sr2Bi2O5. The two novel bismuthates displayed photocatalytic activity toward the photodegradation of acetaldehyde in the gas phase and phenol in aqueous media, with the Sr6Bi2O11 system exhibiting significantly greater photoactivity vis-à-vis the Sr3Bi2O6 bismuthate; by comparison, Sr2Bi2O5 was photocatalytically inactive in this case; their photoactivity was also assessed from the photodegradation of phenol in aqueous media (in all cases using UV-Vis irradiation from a Xe light source). Detailed photocatalytic mechanisms are proposed based on UV-induced coloration studies (carried out using a high-pressure Hg lamp; 365 nm) and on the photodegradation in the presence of radical scavengers to explain how composition and structure of the three bismuthates affect their photocatalytic activity. The role of point defects (oxygen vacancies) in their crystal lattice is described as they affect photocatalytic activity by acting as electron traps and potentially as electron/hole recombination centers.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Yu. A. Kosygin Institute of Tectonics and Geophysics, Far Eastern branch of the Russian Academy of Sciences, 65 Kim Yu Chen Street, Khabarovsk, 680063, Russian Federation
Far Eastern State Transport University, 47 Seryshev Street, Khabarovsk, 680021, Russian Federation
St. Petersburg State University, Ulianovskaya 2, Petergof, Saint-Petersburg, 198904, Russian Federation
Kirensky Institute of Physics, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation
PhotoGreen Laboratory, Dipartimento di Chimica, Universita di Pavia, via Taramelli 12, Pavia, 27100, Italy

Доп.точки доступа:
Shtarev, D. S.; Shtareva, A. V.; Ryabchuk, V. K.; Rudakova, A. V.; Murzin, P. D.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Koroleva, A. V.; Blokh, A. I.; Serpone, N.
}
Найти похожие

14.

    Review of lead-free Bi-based dielectric ceramics for energy-storage applications / L. S. Li, P. Y. Fan, M. Q. Wang [et al.] // J. Phys. D. - 2021. - Vol. 54, Is. 29. - Ст. 293001, DOI 10.1088/1361-6463/abf860. - Cited References: 177. - The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Nos. 51672092, U1732117 and 51902111), the China Postdoctoral Science Foundation (No. 2019M662602), the Natural Science Foundation of Guangxi (AA138162, GA245006, FA198015, and AA294014), the High-Level Innovation Team and Outstanding Scholar Program of Guangxi Institutes, and the Open Fund of the Guangxi Key Laboratory of Information Materials (No.191015-K). The authors thank the projects supported by the Guangdong HUST Industrial Technology Research Institute, the Guangdong Provincial Key Laboratory of Digital Manufacturing Equipment (2020B1212060014) and the DongGuan Innovative Research Team Program (2020607101007). The authors wish to thank the Analytical and Testing Center of Huazhong University of Science and Technology for their help with related tests. In particular, the authors appreciate the valuable suggestions and comments made by the the anonymous reviewers and the editor, Professor Huiyun Liu . - ISSN 0022-3727. - ISSN 1361-6463
   Перевод заглавия: Обзор: Bi-содержащие бессвинцовые керамики для устройств хранения энергии

РУБ Physics, Applied
Рубрики:
TRANSMISSION ELECTRON-MICROSCOPY
STRONTIUM-TITANATE CERAMICS
Кл.слова (ненормированные):
dielectric materials -- energy storage -- lead-free -- Bi-based ceramics
Аннотация: Dielectric energy-storage ceramics have the advantages of high power density and fast charge and discharge rates, and are considered to be excellent candidate materials for pulsed power-storage capacitors. At present, the application of dielectric energy-storage ceramics is hindered by their low energy density and the fact that most of them contain elemental lead. Therefore, lead-free dielectric energy-storage ceramics with high energy storage density have become a research hot spot. In this paper, we first present the requirements that dielectric energy-storage capacitors impose on the properties of ceramic materials. We then review our previous research work combined with research progress into bismuth (Bi)-based lead-free energy-storage ceramics including Bi0.5Na0.5TiO3 (BNT), BiFeO3, and Bi0.2Sr0.7TiO3, in which the composition design ideas and related energy-storage characteristics of BNT-based lead-free energy-storage ceramics are emphasized. At the same time, we highlight the problems faced by Bi-based lead-free energy-storage ceramics and some strategies for addressing them. Finally, we examine the future prospects of research into Bi-based lead-free energy-storage ceramics.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Huazhong Univ Sci & Technol, State Key Lab Mat Proc & & Mould Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China.
Guangdong HUST Ind Technol Res Inst, Dongguan 523808, Peoples R China.
Fukuoka Univ, Fac Sci, Fukuoka 8140180, Japan.
Brno Univ Technol, Cent European Inst Technol CEITEC, Brno, Czech Republic.
RAS, SB, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Tsinghua Univ, Sch Vehicle & Mobil, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China.
Guilin Univ Technol, Guangxi Key Lab Opt & Elect Mat & Devices, Guilin 541004, Peoples R China.

Доп.точки доступа:
Li, Lisong; Fan, Pengyuan; Wang, Mengqi; Takesue, Naohisa; Salamon, David; Vtyurin, A. N.; Втюрин, Александр Николаевич; Zhang, Yangjun; Tan, Hua; Nan, B.o.; Lu, Y.a.; Liu, Laijun; Zhang, Haibo
}
Найти похожие

15.

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.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

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
}
Найти похожие

16.

Temperature dependence of the spontaneous polarization, acoustic and strain anomalies in strontium barium niobate crystals of different chemical compositions probed by the second harmonic generation technique / A. M. Pugachev, I. V. Zaytseva, V. K. Malinovsky [et al.] // Ferroelectrics. - 2020. - Vol. 560, Is. 1. - P. 54-60, DOI 10.1080/00150193.2020.1722883. - Cited References: 19. - This work was supported by the Russian Foundation for Basic Research, projects no. 18-02-00399 and 19-42-543-016 and State assignment No AAAA-A17-117052410033-9. . - ISSN 0015-0193. - ISSN 1563-5112

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
RELAXOR
GROWTH
Кл.слова (ненормированные):
SBN-x crystals -- polar regions -- ferroelectric phase transition -- second harmonic generation -- Brillouin spectroscopy
Аннотация: In SrxBa1-xNb2O6 crystals (x = 0.33, 0.5, 0.61, and 0.75), temperature dependences of spontaneous polarization, strain, elastic modules, and second harmonic generation (SHG) signal are compared. It is revealed that SHG describes the temperature dependences of dipole moments in polar nanoregions in paraelectric phase. In the vicinity of the phase transition in paraelectric phase, SHG reflects the temperature behavior of relatively large and long-lived polar asymmetric regions as indicated by the presence of the intermediate temperature range on the temperature dependence of this nonlinear response.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Inst Automat & Electrometry, Novosibirsk, Russia.
Kirensky Inst Phys Fed Res Ctr KSC SB RAS, Krasnoyarsk, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk, Russia.
Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow, Russia.

Доп.точки доступа:
Pugachev, A. M.; Zaytseva, I., V; Malinovsky, V. K.; Surovtsev, N., V; Gorev, M. V.; Горев, Михаил Васильевич; Ivleva, L. I.; Lykov, P. A.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-02-00399, 19-42-543-016, AAAA-A17-117052410033-9]
}
Найти похожие

17.

Magnetic and resonance properties of the Y0.5Sr0.5Cr0.5Mn0.5O3 polycrystal / G. S. Patrin, M. M. Mataev, K. Z. Seitbekova [et al.] // Phys. Solid State. - 2020. - Vol. 62, Is. 8. - P. 1350-1354, DOI 10.1134/S1063783420080272. - Cited References: 20. - This study was supported by the Ministry of Education and Science of the Republic of Kazakhstan, project no. 05130165 and carried out in the framework of the cooperation agreement between the Siberian Federal University and the Kazakh National Women's Teacher Training University . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
CHROMIUM
TRANSITION
Кл.слова (ненормированные):
yttrium-strontium chromite manganite -- antiferromagnetic interaction -- inverse susceptibility -- magnetic resonance
Аннотация: The magnetostatic and magnetic resonance properties of the Y0.5Sr0.5Cr0.5Mn0.5O3 polycrystalline system have been experimentally investigated. The predominance of the intracrystalline ferromagnetic interaction and the antiferromagnetic character of the intercrystallite interaction have been established. The magnetic resonance spectrum in the magnetically ordered region consists of two lines. The high-field line corresponds to the interacting parts of polycrystal shells and the low-field peak is related to the disordered system of ferromagnetic particles.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

Публикация на русском языке Магнитные и резонансные свойства поликристалла Y0.5Sr0.5Cr0.5Mn0.5O3 [Текст] / Г. С. Патрин, М. М. Матаев, К. Ж. Сейтбекова [и др.] // Физ. тверд. тела. - 2020. - Т. 62 Вып. 8. - С. 1204-1208

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Kazakh Natl Womens Teacher Training Univ, Alma Ata 050000, Kazakhstan.

Доп.точки доступа:
Patrin, G. S.; Патрин, Геннадий Семёнович; Mataev, M. M.; Seitbekova, K. Zh.; Shiyan, Ya. G.; Шиян, Ярослав Германович; Yarikov, S. A.; Яриков, Станислав Алексеевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Ministry of Education and Science of the Republic of KazakhstanGovernment of the Republic of KazakhstanMinistry of Education and Science of the Republic of Kazakhstan [05130165]
}
Найти похожие

18.

Nonlinear diffraction and random QPM in strontium tetraborate / A. S. Aleksandrovsky, A. M. Vyunyshev [et al.] // Proceedings of CAOL 2008 : 4th International Conference on Advanced Optoelectronics and Lasers. - Alushta, Crimea, 2008. - С. 398-400, DOI 10.1109/CAOL.2008.4671848 . - ISBN 9781424419746 (ISBN)

РИНЦ,
Источник статьи,
Читать в сети ИФ
Держатели документа:
L.V. Kirensky Institute of Physics
Siberian State University

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Shakhura, I. E.; Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; International Conference on Advanced Optoelectronics and Lasers(4th ; 2008 ; Apr. 29 Sep. - 04 Oct. ; Alushta, Crimea)
Нет сведений об экземплярах (Источник в БД не найден)
}
Найти похожие

19.

Nonlinear photonic crystals of strontium tetraborate / A. S. Aleksandrovsky, I. E Shakhura, A. M. Vyunyshev [et al.] // V International Symposium "Modern problems of laser physics" : Technical digest : Novosibirsk, Russia, 24-30 August, 2008 / "Modern problems of laser physics", International Symposium (5 ; 2008 ; Aug ; Novosibirsk). - 2008. - p. 206

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Shakhura, I. E; Vyunyshev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; "Modern problems of laser physics", International Symposium(5 ; 2008 ; Aug ; Novosibirsk); "Современные проблемы лазерной физики", Международный симпозиум(5 ; 2008 ; авг. ; Новосибирск)
}
Найти похожие

20.

    Random quasi-phase-matching in a nonlinear photonic crystal structure of strontium tetraborate / A. S. Aleksandrovsky [et al.] // Phys. Rev. A. - 2008. - Vol. 78, Is. 3. - Ст. 031802, DOI 10.1103/PhysRevA.78.031802. - Cited Reference Count: 20. - Гранты: This work was supported by RFBR Grant No. 02-0700497, Grants of the President of the Russian Federation for the support of leading scientific schools (No. SS-1011.2008.2 and No. SS-3818.2008.3), Grant No. RNP.2.1.1.1814, and the Interdisciplinary Integration project of SB RAS 33. - Финансирующая организация: RFBR [02-0700497]; Russian Federation [SS-1011.2008.2, SS-3818.2008.3, RNP.2.1.1.1814]; SB RAS 33 . - ISSN 1050-2947
Рубрики:
HARMONIC-GENERATION
   DOMAIN-STRUCTURE
Кл.слова (ненормированные):
Alkaline earth metals -- Crystal atomic structure -- Experiments -- Harmonic generation -- Photonic crystals -- Powders -- Random processes -- Strontium -- Angular dependences -- Enhancement factors -- Near ultraviolet -- Photonic Crystal structures -- Quasi phase-matching -- Second-harmonic generation -- Spectral dependences -- Tetra borate -- Crystal structure
Аннотация: Random quasi-phase-matching (RQPM) of the second-harmonic generation process is investigated experimentally and theoretically in a strongly randomized spontaneously grown nonlinear photonic crystal structure of strontium tetraborate. The thickness of domains in the structure is measured and employed in calculations of angular and spectral dependences of random quasi-phase-matching. Despite the great scale of randomness, the RQPM effect is preserved. The calculated enhancement factor due to RQPM is in excellent agreement with experiment, and good agreement between calculations and experiment is obtained for the shape of the angular dependence of RQPM. The calculated spectral dependence of RQPM consists of a number of narrow peaks, and a maximum enhancement factor is attained in the near ultraviolet. The band structure of randomized nonlinear photonic crystal is calculated.

WOS,
Scopus,
eLibrary
Держатели документа:
Akademgorodok, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Shakhura, I. E. ; Zamkov, A. V.; Замков, Анатолий Васильевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович
}
Найти похожие