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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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Morphology of the polar twin structure in Czochralski grown α-SrB4O7 crystals / A. I. Zaitsev [et al.] // J. Cryst. Growth. - 2015. - Vol. 416. - P. 17-20, DOI 10.1016/j.jcrysgro.2015.01.004. - Cited References:15. - This study is supported by Grant of the President of the Russian Federation for the support of leading scientific schools SS-924.2014.2. . - ISSN 0022. - ISSN 1873-5002. -

РУБ Crystallography + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
TETRABORATE
STRONTIUM
SRB4O7
Кл.слова (ненормированные):
Optical microscopy -- Czochralski method -- Borates -- Growth twins -- Nonlinear -- optic materials
Аннотация: The arrangement of a polar twin structure in Czochralski grown α-SrB4O7 crystals has been investigated. The transversal twin boundaries are stretched along [ 1 0 1 ] and [ 1 0 0 ] directions. The lateral twin boundaries are parallel to ( 0 1 0 ) plane. The twin structures have an extension up to centimeter size in all directions. Supposedly, they originate from polysynthetic polar microtwins revealed to form in ( 1 0 1 ¯ ) and ( 1 ¯ 0 1 ¯ ) growth pyramids. The dimensions, planarity and thickness stability of each individual twin are favorable for organizing quasi-phase matching conditions for nonlinear optical doubling of high-aperture beams.

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Держатели документа:
SB RAS, LV Kirensky Inst Phys, Akademgorodok 660036, Krasnoyarsk, Russia.
Siberian Fed Univ, Svobodny Prospect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Radionov, N. V.; Радионов, Никита Вячеславович; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Zamkov, A. V.; Замков, Анатолий Васильевич; Grant of the President of the Russian Federation for the support of leading scientific schools [SS-924.2014.2]
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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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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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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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    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.

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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.
}
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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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