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    Čerenkov nonlinear diffraction in random nonlinear photonic crystal of strontium tetraborate / A. M. Vyunishev [et al.] // Appl. Phys. Lett. - 2012. - Vol. 101, Is. 21. - Ст. 211114, DOI 10.1063/1.4767385. - Cited References: 29. - The work was supported by RFBR through the Grant No. 12-02-31167, by the Ministry of Education and Science of Russian Federation (Contract No. 14.B37.21.0730 and Grant No. 2.1.1/3455), by RAS Projects 24.29 and 24.31, by PSB RAS Projects 2.5.2 and 3.9.5, by SB RAS Projects 43 and 101, and by SFU Grant F12. . - ISSN 0003-6951
Рубрики:
POLED LITHIUM-NIOBATE
   2ND-HARMONIC GENERATION
   BARIUM NIOBATE
   PULSES
Аннотация: Čerenkov-type second harmonic generation of femtosecond pulses in random one-dimensional nonlinear photonic crystal of strontium tetraborate is investigated experimentally and theoretically. Sidebands in angular-spectral dependence of generated second harmonic were detected and found to be in perfect agreement with calculations. Spectral maximum of generated radiation experiences deviation from Čerenkov relation due to influence of nonlinear photonic crystal structure. Pulse duration and local spectrum of Čerenkov second harmonic are measured and found to be in fair agreement with each other.

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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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Vibrational spectra and elastic piezoelectric and polarization properties of the α-SrB4O7 crystal / V. I. Zinenko [et al.] // J. Exp. Theor. Phys. - 2012. - Vol. 115, Is. 3. - P. 455-461, DOI 10.1134/S1063776112080195. - Cited References: 17. - This work was supported by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. NSh.4828.12.2). . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
STRONTIUM TETRABORATE
SRB4O7
Аннотация: The crystal lattice vibrational frequencies in the center of the Brillouin zone have been determined with the Raman spectroscopy method. The lattice vibrational frequencies, the phonon density of states, elastic and piezoelectric moduli, Born dynamic charges, and high-frequency dielectric constant have been calculated using the density functional method. All calculated quantities have been compared to the experimental data. A model of a nonpolar paraelectric phase for this compound, as well as a mechanism of the formation of domain in it, has been proposed. The polarization in the experimentally observed polar phase has been calculated.

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Публикация на русском языке Колебательные спектры, упругие, пьезоэлектрические и поляризационные свойства кристалла α-SrB407 [Текст] / В. И. Зиненко [и др.] // Ж. эксперим. и теор. физ. : Наука, 2012. - Т. 142 Вып. 3. - С. 511-519

Держатели документа:
[Zinenko, V. I.
Pavlovskii, M. S.
Zaitzev, A. I.
Krylov, A. S.
Shinkorenko, A. S.] Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Zaitzev, A. I.; Зайцев, Александр Иванович; Krylov, A. S.; Крылов, Александр Сергеевич; Shinkorenko, A. S.; Шинкоренко, Алексей Сергеевич
}
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Ultrashort pulses characterization by nonlinear diffraction from virtual beam / A. S. Aleksandrovsky [et al.] // Appl. Phys. Lett. - 2011. - Vol. 98, Is. 6. - Ст. 61104, DOI 10.1063/1.3554370. - Cited References: 14. - 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 No. SS-4645.2010.2; Grant No. RNP.2.1.1.3455 and Projects 2.5.2 and 3.9.1 of PSB RAS; and Projects Nos. 27.1 and 5 of SB RAS. A. M. Vyunishev is grateful for support from Carl Zeiss Grant and from Krasnoyarsk Regional Fund of Science and Technical Activity Support. . - ISSN 0003-6951

РУБ Physics, Applied
Рубрики:
CRYSTAL
SRB4O7
Кл.слова (ненормированные):
Broad spectral -- Frequency-doubling -- Noncollinear -- Nonlinear diffraction -- Nonlinear photonic crystals -- Short-wavelength -- Tetraborate -- Ultrafast diagnostics -- Diffraction -- Light propagation -- Strontium -- Ultrashort pulses -- Photonic crystals
Аннотация: Noncollinear frequency doubling in a random nonlinear photonic crystal of strontium tetraborate via nonlinear diffraction from virtual beam is investigated. This effect is shown to be useful for ultrashort pulses characterization in broad spectral range. Nonlinear photonic crystals of strontium tetraborate are a promising medium for ultrafast diagnostics in short-wavelength applications. (C) 2011 American Institute of Physics. [doi:10.1063/1.3554370]

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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.
Ikonnikov, A. A.
Pospelov, G. I.] 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; Ikonnikov, A. A.; Pospelov, G. I.
}
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    Tunable femtosecond frequency doubling in random domain structure of strontium tetraborate / A. S. Aleksandrovsky [et al.] // Opt. Commun. - 2009. - Vol. 282, Is. 11. - P. 2263-2266, DOI 10.1016/j.optcom.2009.02.070. - Cited Reference Count: 16. - Гранты: The work was supported by the RFBR Grant 09-02-00670, Grants of the President of the Russian Federation for the support of leading scientific schools (Nos. SS-1011.2008.2 and SS-3818.2008.3), Grant No. RNP.2.1.1.3455, and the Projects 2.5.2 of PSB RAS, Nos. 5 and 27.1 of SB RAS. - Финансирующая организация: RFBR [09-02-00670]; President of the Russian Federation [SS-1011.2008.2, SS-3818.2008.3]; PSB RAS [2.5.2]; SB RAS [5, 27.1]; [RNP.2.1.1.3455] . - ISSN 0030-4018
Рубрики:
2ND-HARMONIC GENERATION
   HARMONIC-GENERATION
   BARIUM NIOBATE
   CRYSTAL
Кл.слова (ненормированные):
Domain structures -- Femtosecond -- Frequency-doubling -- Harmonic frequencies -- Noncollinear -- Nonlinear photonic crystals -- Photonic structures -- Second harmonics -- Second-harmonic generations -- Spatial spectrum -- Tetraborate -- Harmonic generation -- Photonic crystals -- Strontium -- Harmonic analysis
Аннотация: Efficient tunable femtosecond phase-matched noncollinear second-harmonic generation in randomized nonlinear photonic crystal of strontium tetraborate is obtained. Spatial spectrum of nonlinear photonic structure is not flat but enables tuning of the harmonic frequency in the range from 355 to 460 nm. The narrowing of the bandwidth of second harmonic is found to be of order of 10-20%. (C) 2009 Elsevier B.V. All rights reserved.

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Держатели документа:
RAS, SB, LV Kirensky Phys Inst, Coherent Opt Lab, Krasnoyarsk 600036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Aleksandrovsky, A.S.; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A.I.; Zamkov, A. V.; Замков, Анатолий Васильевич; Slabko, V.V.
}
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    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.

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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.
}
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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.

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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]
}
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Superconductivity near liquid nitrogen temperature in the Sn-Ba-Sr-Y-Cu-O system / K. S. Aleksandrov [et al.] // Physica C-Superconductivity and its Applications. - 1989. - Vol. 161, Is. 4. - P. 493-496, DOI 10.1016/0921-4534(89)90087-7 . - ISSN 0921-4534
Кл.слова (ненормированные):
Ceramic Materials -- Tin Compounds -- Bulk Superconductivity -- High Temperature Superconductors -- Oxide Superconductors -- Tin Barium Strontium Yttrium Copper Oxide -- Superconducting Materials
Аннотация: A high-Tc phase was found in the Sn-Ba-Sr-Y-Cu-O system. DC susceptibility data of Sn2Ba2Sr0.5Y0.5Cu3Ox show a single transition to bulk superconductivity with an onset temperature of 86 K. В© 1989.

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Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Khrustalev, B. P.; Хрусталев, Борис Петрович; Krivomazov, S. N.; Петров, Михаил Иванович; Petrov, M. I.; Vasilyev, A. D.; Zwegintsev, S. A.
}
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Stability and thermoelectric properties of mechano-activated solid solutions of Sr1-xLnxTiO3-δ (Ln = Nd, Gd, Dy) / Y. S. Orlov, S. N. Vereshchagin, L. A. Solovyov [et al.] // J. Taiwan Inst. Chem. Eng. - 2022. - Vol. 138. - Ст. 104449, DOI 10.1016/j.jtice.2022.104449. - Cited References: 39. - This study was supported by the Russian Foundation for Basic Research, project no. 20-52-04008 Bel_mol_a. Thermal analysis was performed within the scope of Budget Project No. 0287-2021-00-13 for the Institute of Chemistry and Chemical Technology SB RAS . - ISSN 1876-1070
Кл.слова (ненормированные):
Strontium titanate solid solutions -- Thermoelectric oxide materials -- Mechanochemical activation -- Electron microscopy
Аннотация: Background: The effect of mechanochemical activation on the microstructure, morphology, and thermoelectric parameters of the materials leading to an increase in the power factor (PF) is demonstrated by the example of the Sr1-xLnxTiO3-δ (Ln = Nd, Gd, Dy; x = 0.05, 0.075, 0.1) solid solutions. Methods: The strontium titanate solid solutions have been synthesized using a conventional ceramic technology from particles of different sizes obtained by mechanical activation of annealed ceramics. Findings: It is shown that different sizes of initial particles cause the morphological and microstructural differences and significantly affect the stability and thermoelectric properties of the synthesized samples. It has been established that a decrease in the initial particle size ensures the thermal stability of the samples and leads to an increase in their electrical conductivity and PF at the minor variation in the Seebeck coefficient. The PF of the Sr0.925Nd0.075TiO3 solid solution changes by a factor of 7. It has been found that the mechanically activated samples have the much lower porosity than the nonactivated ones, which noticeably reduces the effective area of their interaction with the environment (oxygen release and absorption); therefore, all the measurement data obtained on the mechanically activated samples upon their heating and cooling are reversible.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 24, Krasnoyarsk, 660036, Russian Federation
SSPA "Scientific-Practical Materials Research Centre of NAS of Belarus", 19 P. Brovki st.Minsk 220072, Belarus

Доп.точки доступа:
Orlov, Yu. S.; Орлов, Юрий Сергеевич; Vereshchagin, S. N.; Solovyov, L. A.; Borus, A. A.; Борус, Андрей Андреевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Nikitin, A. V.; Bushinsky, M. V.; Lanovsky, R. A.; Rymski, G. S.; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич
}
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Spectral fringes in non-phase-matched SHG and refinement of dispersion relations in the VUV / P. Trabs [et al.] // Opt. Express. - 2015. - Vol. 23, Is. 8. - P. 10091-10096, DOI 10.1364/OE.23.010091. - Cited References:11 . - ISSN 1094-4087

РУБ Optics
Рубрики:
2ND-HARMONIC GENERATION
   CRYSTAL
   STRONTIUM
   SrB4O7
Аннотация: We consider second harmonic generation (SHG) of ultrashort pulses in the case of strong phase- and group-velocity mismatch. Spectral fringes appear in the second harmonic related to two delayed replicas of the fundamental pulse in the time domain. The fringe separation can be used to evaluate the group-velocity and refractive index of nonlinear crystals at extreme wavelengths. Experimental results with femtosecond pulses in SrB4O7 (SBO) are used to refine the Sellmeier equation describing the nc refractive index down to 160 nm, essential for the use of this unique nonlinear crystal for random quasi-phase-matching in the VUV.

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Держатели документа:
Max Born Inst Nonlinear Opt & Ultrafast Spect, D-12489 Berlin, Germany.
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Trabs, Peter; Noack, Frank; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Radionov, N. V.; Радионов, Никита Вячеславович; Petrov, V.
}
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10.

    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.

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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.
}
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11.

Solid-phase transformation of Cs+- and Sr2+-bearing zeolite sorbents derived from cenospheres to mineral-like forms / S. N. Vereshchagin [et al.] // Materials Research Society Symposium Proceedings. - 2009. - Vol. 1193: 32nd Symposium on Scientific Basis for Nuclear Waste Management (24 May 2009 through 29 May 2009, St. Petersburg, ) Conference code: 79940. - P87-94 . - ISBN 02729172 (ISSN); 9781605111667 (ISBN)
Кл.слова (ненормированные):
Apparent activation energy -- Cenospheres -- Crystalline minerals -- Crystalline phasis -- Crystallization temperature -- Higher temperatures -- Long-term disposal -- Multi phase systems -- Pollucites -- Principal Components -- Solid-phase transformation -- Temperature range -- Thermal treatment -- Thermochemical transformations -- Transformation temperatures -- XRD analysis -- Activation energy -- Atmospheric pressure -- Cesium -- Crystalline materials -- Crystallization -- Fly ash -- Metallic glass -- Radioactive waste disposal -- Radioactive wastes -- Silicate minerals -- Sodium -- Sorbents -- Sorption -- Strontium -- Synthesis (chemical) -- Waste management -- Atmospheric temperature
Аннотация: The paper describes the studies of the transformation of Cs+- and Sr2+-containing zeolite sorbents synthesized from fly ash cenospheres to crystalline mineral composition, suitable for the long-term disposal. Series of Cs+- and Sr2+-exchanged NaP1-containing sorbents were subjected to the thermochemical transformation in the temperature range 40-1100°C at atmospheric pressure in air and the progress of reaction was monitored by DSC and XRD analysis. It was shown that initial sodium zeolite undergoes two-step transformation at 736-785°C and 892-982°C forming nepheline as the principle product, with the conversion temperatures being dependant on the heating rate. The thermal treatment of Cs+-bearing zeolite sorbent led to formation of a complex multiphase system, the principal components of which were nepheline and pollucite. Increasing cesium content in the samples led to a monotonous shift of crystallization peak to the higher temperature range (1005-1006°C). A more complicated behavior was observed for Sr2+-containing samples, for which the crystallization temperature tends to increase (compared with NaP1) at lower Sr contents, but it starts decreasing parallel to the Sr2+ content at Sr2+ loadings 10 mg/g. The principal crystalline phases in Sr-NaP1 sample conversion were nepheline and Sr2+- containing feldspar, the quantity of which increased parallel to the increase of strontium content in zeolite. Apparent activation energies of thermochemical transformations were calculated and possible approaches to reduce transformation temperature are discussed and experimentally illustrated. © 2009 Materials Research Society.

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Держатели документа:
Institute of Chemistry and Chemical Technology SB RAS, 42 K. Marx Street, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodnyi Avenue, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Vereshchagin, S.N.; Vereshchagina, T.A.; Solovyov, L.A.; Shishkina, N.N.; Vasilieva, N.G.; Anshits, A.G.
}
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12.

Second harmonic generation in randomized domain structure of strontium tetraborate / A. M. Vyunishev, A. S. Aleksandrovsky, I. E. Shakhura [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. 226

Доп.точки доступа:
Vyunyshev, A. M.; Вьюнышев, Андрей Михайлович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Shakhura, I. E.; 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)
}
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13.

    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.

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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
}
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14.

    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.

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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
}
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15.

Random quasi-phase-matching in a nonlinear photonic crystal structure of strontium tetraborate / A. S. Aleksandrovsky, A. M. Vyunishev, I. E. Shakhura [et al.] // PHYS. REV. A : APS, 2008. - P. 031802-1-031802-4DOI 10.1103/PhysRevA.78.031802. - Библиогр.: 20. - This work was supported by RFBR Grant No. 02-07-00497, 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.

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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
}
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16.

Aleksandrovsky, A. S.
Random quasi-phase-matching and nonlinear diffraction in nonlinear photonic crystal structures of strontium tetraborate : conference paper / A. S. Aleksandrovsky, A. M. Vyunishev, A. I. Zaitsev // Ultrafast optics conference. - Davos, 2013. - Ст. Fr2.3

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Александровский, Александр Сергеевич; Ultrafast optics conference (9 ; 2013 ; March; 2-8 ; Davos Congr. Center, Switzerland)
}
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17.

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.

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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.
}
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18.

Random quasi phase matching in domain structure of strontium tetraborate crystals / Shakhura I. E, Aleksandrovsky A.S., Vyunyshev A.M., Zaitsev A.I., Zamkov A.V. // 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. 219-220

Доп.точки доступа:
Shakhura, I. E; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; 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)
}
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19.

Sobol, A. A.
Raman spectroscopy of SrB4O7 single crystals in the temperature range 300–1273 K / A. A. Sobol, V. E. Shukshin, A. I. Zaitsev // Opt. Spectrosc. - 2016. - Vol. 121, Is. 1. - P. 25-31, DOI 10.1134/S0030400X16070201. - Cited References: 20. - This work was supported by the Russian Foundation for Basic Research, project no. 13-02-00707a. . - ISSN 0030-400X

РУБ Optics + Spectroscopy
Рубрики:
STRONTIUM TETRABORATE
   PHASE-TRANSITIONS
   SCATTERING
   SPECTRA
Аннотация: The polarized Raman spectra of SrB4O7 (SBO) single crystals are studied in detail in the temperature range of 300–1273 K. The TO, LO, and IO phonon lines of A1, A2, B1, and B2 symmetries of rhombic SBO at 300 K are identified. The behavior of the Raman spectra of SBO crystals is studied upon heating up to their melting. The relation of Raman spectra with the structure of boron–oxygen fragments, as well as the transformation of spectra in the process of melting of SBO crystals, is discussed. © 2016, Pleiades Publishing, Ltd.

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Публикация на русском языке Соболь А. А. Спектроскопия комбинационного рассеяния света в монокристаллах SrB4O7 в интервале температур 300–1273 K [Текст] / А. А. Соболь, В. Е. Шукшин, А. И. Зайцев // Оптика и спектроскопия : Наука, 2016. - Т. 121 № 1. - С. 28-35

Держатели документа:
Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russian Federation
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shukshin, V. E.; Zaitsev, A. I.; Зайцев, Александр Иванович
}
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20.

Ovchinnikov, S. G.
Quasi-particle spectrum in copper oxides / S. G. Ovchinnikov, G. A. Petrakovsky // J. Supercond. - 1991. - Vol. 4, Is. 6. - P. 437-448, DOI 10.1007/BF00635862. - Cited References: 0 . - ISSN 0896-1107

РУБ Physics, Applied + Physics, Condensed Matter

Кл.слова (ненормированные):
ELECTRON CORRELATIONS -- ELECTRON ENERGY STRUCTURE -- COPPER OXIDE -- PHOTOEMISSION DATA -- copper oxide -- Electron correlations -- electron energy structure -- photoemission data -- Ceramic Materials -- Lanthanum Compounds -- Fermi Liquid -- Lanthanum Strontium Copper Oxides -- Oxide Superconductors -- Quasi Particles -- High Temperature Superconductors
Аннотация: The results of electronic structure calculations of the CuO2 layer, performed by the generalized tight-binding method, are presented. The strong electron correlations on both the Cu and O ions are included explicitly. The resulting quasiparticle band structure contains an insulator gap for undoped compounds like La2CuO4. The valence band consists of a large number of narrow Hubbard quasiparticle bands. The dispersion law of quasiparticles at the top of the valence band has a minimum at the GAMMA-point, indicating the existence of the multivalley Fermi surface in the doped La2-xSrxCuO4. The origin of the Fermi liquid behavior in the narrow quasiparticle bands is discussed.

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Держатели документа:
L. V. Kirensky Institute of Physics, Siberian Department of the USSR Academy of Sciences, Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Petrakovsky, G. A.; Петраковский, Герман Антонович; Овчинников, Сергей Геннадьевич
}
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