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

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=Rietveld<.>)

Общее количество найденных документов : 18
Показаны документы с 1 по 10

1-10 11-18

    Preparation and structural properties of nonlinear optical borates K 2(1-x)Rb 2xAl 2B 2O 7, 0 ˂ x ˂ 0.75 / V. V. Atuchin [и др.] // J. Alloys Compd. - 2012. - Vol. 515. - P. 119-122, DOI 10.1016/j.jallcom.2011.11.115. - Cited References: 30. - This study was supported by SB RAS (Grant 34) and RFBR Grants 11-02-90706-mob_st and 11-03-00867a. . - ISSN 0925-8388
   Перевод заглавия: Получение и структурные свойства нелинейных оптических боратов K 2(1-x)Rb 2xAl 2B 2O 7, 0 ˂ x ˂ 0.75

РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical Engineering + Aluminum + Crystal structure + Nonlinear optics + Rietveld analysis + Rubidium + Solid solutions + Structural properties + X ray powder diffraction
Рубрики:
UV-light generation
   Frequence-conversion
   K2Al2B2O7 crystal
   Composition ratio
   Mixed-crystals
   Growth
   KRbAl2B2O7
   NLO properties
   Non-linear optical
   Non-linear optical properties
   Rietveld analysis of X-ray powder diffraction data
   Solubility limits
   Space Groups
   Structural parameter
Кл.слова (ненормированные):
KRbAl2B2O7 -- Solid solution -- Crystal structure -- NLO properties
Аннотация: The structures of K 2(1-x)Rb 2xAl 2B 2O 7, x = 0.25, 0.5, 0.75, have been determined in space group P321 through Rietveld analysis of X-ray powder diffraction data. The solubility limit in K 2(1-x)Rb 2xAl 2B 2O 7 crystals has been estimated as x similar to 0.83-0.9. Nonlinear optical properties of KRbAl 2B 2O 7 have been verified by powder Kurtz-Perry method. Mechanisms of structural parameter variation in K 2Al 2B 2O 7 crystal family have been discussed.

Смотреть статью,
Scopus,
WoS,
Читать в сети ИФ

Доп.точки доступа:
Atuchin, V. V.; Bazarov, B. G.; Gavrilova, T. A.; Grossman, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bazarova, Zh. G.
}
Найти похожие

Synthesis, structural, magnetic, and electronic properties of cubic CsMnMoO3F3 oxyfluoride / V. V. Atuchin [et al.] // J. Phys. Chem. C. - 2012. - Vol. 116, Is. 18. - P. 10162-10170, DOI 10.1021/jp302020f. - Cited References: 64. - We thank Dr. A.M. Ziatdinov for the electron paramagnetic resonance measurements. This study was partly supported by SB RAS (Grant 28). . - ISSN 1932-7447

РУБ Chemistry, Physical + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary
Рубрики:
RAY PHOTOELECTRON-SPECTROSCOPY
   PHASE-TRANSITIONS
   CORE LEVELS
   SURFACE CHARACTERIZATION
   CRYSTAL-STRUCTURE
   CLEAVED SURFACE
   MIXED-VALENCE
   OXIDES
   MN
   MOLYBDENUM
   Chemical bondings
   Cubic phase
   Energy differences
   Heat capacity measurements
   Oxyfluorides
   Powder samples
   Solid-state synthesis
   Space Groups
   Temperature range
   Valence electron
   Binding energy
   Chemical bonds
   Electronic structure
   Fluorine compounds
   Magnetic properties
   Metal ions
   Photoelectrons
   Rietveld method
   X ray photoelectron spectroscopy
   Electronic properties
Аннотация: A powder sample of CsMnMoO3F3 oxyfluoride has been prepared by solid state synthesis. The pyrochlore-related crystal structure of CsMnMoO3F3 has been refined by the Rietveld method at T = 298 K (space group Fd-3m, a = 10.59141(4) angstrom, V = 1188.123(8) angstrom(3); R-B = 3.44%). The stability of the cubic phase has been obtained over the temperature range T = 110-293 K by heat capacity measurements. Magnetic properties have been measured over the range of T = 2-300 K. The electronic structure of CsMnMoO3F3 has been evaluated by X-ray photoelectron spectroscopy. Chemical bonding effects have been discussed for all metal ions using binding energy difference parameters and wide comparison with related oxides and fluorides. The competition between O-2(-) and F- ions for metal valence electrons has been found.

Смотреть статью,
Scopus,
WoS,
Читать в сети ИФ
Держатели документа:
Atuchin, Victor V.
Gavrilova, Tatyana A.
Kesler, Valery G.] SB RAS, Inst Semicond Phys, Novosibirsk 630090, Russia
Molokeev, Maxim S.
Yurkin, Gleb Yu.
Flerov, Igor N.
Patrin, Gennadii S.] SB RAS, Inst Phys, Krasnoyarsk 660036, Russia
Laptash, Natalia M.] FEB RAS, Inst Chem, Vladivostok 690022, Russia
Flerov, Igor N.
Patrin, Gennadii S.] Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia

Доп.точки доступа:
Atuchin, V. V.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Yurkin, G. Yu.; Юркин, Глеб Юрьевич; Gavrilova, T. A.; Kesler, V. G.; Laptash, N. M.; Flerov, I. N.; Флёров, Игорь Николаевич; Patrin, G. S.; Патрин, Геннадий Семёнович
}
Найти похожие

    Low-temperature synthesis and structural properties of ferroelectric K 3WO3F3 elpasolite / V. V. Atuchin [et al.] // Chem. Phys. Lett. - 2010. - Vol. 493, Is. 1-3. - P. 83-86, DOI 10.1016/j.cplett.2010.05.023. - Cited References: 37 . - ISSN 0009-2614
Рубрики:
PEROVSKITE-LIKE OXYFLUORIDES
   CORE-LEVEL SPECTROSCOPY
   PHASE-TRANSITIONS
   SOLID-STATE
   ELECTRON-DIFFRACTION
   DIFFUSE-SCATTERING
   RHEED ANALYSIS
   POLAR
   BEHAVIOR
   (NH4)(3)TIOF5
Кл.слова (ненормированные):
Chemical synthesis -- Elpasolite -- Ferroelectric phase transition -- Fluorine atoms -- Low temperature synthesis -- Low temperatures -- Oxyfluorides -- Partial ordering -- Room temperature -- SEM -- Space Groups -- Structure parameter -- XRD -- Chemical properties -- Ferroelectric materials -- Ferroelectricity -- Fluorine -- Oxygen -- Phase transitions -- Rietveld method -- Single crystals -- Synthesis (chemical) -- X ray photoelectron spectroscopy -- X ray powder diffraction -- Scanning electron microscopy
Аннотация: Low-temperature ferroelectric G2 polymorph of K3WO 3F3 has been prepared by chemical synthesis. Structural and chemical properties of the final product have been evaluated with X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Structure parameters of G2-K 3WO3F3 are refined by the Rietveld method from XRD data measured at room temperature (space group Cm, Z = 2, a = 8.7350(3), b = 8.6808(5), c = 6.1581(3), ? = 135.124(3), V = 329.46(3) 3; RB = 2.47%). Partial ordering of oxygen and fluorine atoms has been found over anion positions. Mechanism of ferroelectric phase transition in A2BMO3F3 oxyfluorides is discussed. В© 2010 Elsevier B.V. All rights reserved.

Scopus,
Читать в сети ИФ
Держатели документа:
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Nanolithography and Nanodiagnostics, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Physical Principles for Integrated Microelectronics, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russian Federation
Laboratory of Crystal Physics, Institute of Physics, SB RAS, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Atuchin, V. V.; Gavrilova, T. A.; Kesler, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
Найти похожие

Molokeev, M. S.
Crystal structures of room- and low-temperature phases in oxyfluoride (NH4)(2)KWO3F3 / M. S. Molokeev, A. D. Vasiliev, A. G. Kocharova // Powder Diffr. - 2007. - Vol. 22, Is. 3. - P. 227-230, DOI 10.1154/1.2759491. - Cited References: 8. - Cover image: Artwork representing main idea of this article . - ISSN 0885-7156

РУБ Materials Science, Characterization & Testing

Кл.слова (ненормированные):
structure determination -- Rietveld analysis -- powder diffraction -- phase transition -- oxyfluoride
Аннотация: Crystal structures of (NH4)2KWO(3)F(3) at 298 K and 113 K were solved from X-ray powder diffraction data and refined by the Rietveld technique. The compound is isostructural with elpasolite K2NaAlF6 at room temperature with space group Fm-3m, a=8.95850(5) angstrom, V=718.961(7) angstrom(3), Z =4, D-x=3.363 g/cm(3), and M-W=364.02. The structure was refined over 18 parameters to R-wp =12.6%, R-p=10.9%, R-exp=5.03%, and R-B=3.27% from 40 independent reflections. (NH4)2KWO(3)F(3) was transformed upon cooling to a ferroelastic monoclinic phase with space group P2(1)/n, a'=6.3072(3) angstrom, b'=6.3028(3) angstrom, c'=8.9882(3) angstrom, beta'=90.242(2)degrees, V=357.30(3) angstrom(3), Z =2, and D-x=3.383 g/cm(3). The low-temperature structure at 113 K was refined over 28 parameters,P to R-wp=20.9%, R-p=21.3%, R-exp= 12.5%, and R-B=6.93% from 453 independent reflections. (C) 2007 International Centre for Diffraction Data.

WOS,
Смотреть статью

Доп.точки доступа:
Vasiliev, A. D.; Васильев, Александр Дмитриевич; Kocharova, A. G.; Кочарова, Алла Георгиевна; Молокеев, Максим Сергеевич
}
Найти похожие

    Photoluminescence of monoclinic Li3AlF6 crystals under vacuum ultraviolet and soft X-ray excitations / V. A. Pustovarov [et al.] // Opt. Mater. - 2015. - Vol. 49. - P. 201-207, DOI 10.1016/j.optmat.2015.09.011. - Cited References: 49. - This work was partly supported by the Ministry of Education and Science of the Russian Federation (the basic part of the government mandate); Center of Excellence "Radiation and Nuclear Technologies" (Competitiveness Enhancement Program of Ural Federal University, Russia), HASYLAB DESY (Projects Nos. 20110843, 20080119EC), European Social Fund ("Mobilitas" program, MJD219), Estonian Research Council (Institutional Research Funding IUT02-26) and Baltic Science Link project coordinated by the Swedish Research Council, VR . - ISSN 0925-3467
   Перевод заглавия: Люминесценция моноклинных кристаллов Li3AlF6 под вакуумным ультрафиолетом и мягким рентгеновским излучением

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
LiBaAlF6 single-crystals
   F-type centers
   LiBaF3 crystals
   Color-centers
   Recombination luminescence
   Rietveld refinement
   VUV spectroscopy
   Trapped excitons
   Energy-transfer
   Pure
Кл.слова (ненормированные):
Li3AlF6 -- Time-resolved luminescence -- VUV spectroscopy -- Defects
Аннотация: Using Bridgman technique we have grown monoclinic β-LiAF crystals suitable for optical studies, performed XRD-identification and Rietveld refinement of the crystal structure and carried out a photoluminescence study upon vacuum ultraviolet (VUV) and extreme ultraviolet (XUV)-excitations, using the low-temperature (T = 7.2 K) time-resolved VUV-spectroscopy technique. The intrinsic PL emission band at 340–350 nm has been identified as due to radiative recombination of self-trapped excitons. The electronic structure parameters were determined: bandgap E g ≈ 12.5 eV, energy threshold for creation of unrelaxed excitons 11.8 eV < E n < 12.5 eV . The PL emission bands at 320–325 and 450 nm were attributed to luminescence caused by lattice defects. We have discovered an efficient excitation of PL emission bands in the energy range of interband transitions ( E ex > 13.5 eV), as well as in the energy range of core transitions at 130 eV. We have revealed UV–VUV PL emission bands at 170 and 208 nm due to defects. A reasonable assumptions about the origin of the UV–VUV bands were discussed.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Ural Federal University, 19, Mira Street, Yekaterinburg, Russian Federation
Institute of Physics, University of Tartu, 14c, Ravila Street, Tartu, Estonia
Kirensky Institute of Physics, SB RAS, Akademgorodok 50, Krasnoyarsk, Russian Federation
Far Eastern State Transport University, 47, Serysheva Street, Khabarovsk, Russian Federation
Institute of Geology and Mineralogy, SB RAS, 43, Russkaya Street, Novosibirsk, Russian Federation
Novosibirsk National Research University, 2, Pirogova Street, Novosibirsk, Russian Federation

Доп.точки доступа:
Pustovarov, V. A.; Пустоваров В. А.; Ogorodnikov, I. N.; Огородников И. Н.; Omelkov, S. I.; Омелков С. И.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Kozlov, A. V.; Козлов А. В.; Isaenko, L. I.; Исаенко Л. И.
}
Найти похожие

    New insight into the crystal structure of Sr4Ca(PO4)2SiO4 and the photoluminescence tuning of Sr4Ca(PO4)2SiO4:Ce3+,Na+,Eu2+ phosphors / M. Zhang [et al.] // J. Mater. Chem. C. - 2016. - Vol. 4, Is. 38. - P. 9078-9084, DOI 10.1039/c6tc03373c. - Cited References: 31 . - ISSN 2050-7534
   Перевод заглавия: Новый взгляд на кристаллическую структуру Sr4Ca(PO4)2SiO4 и управление люминесценцией в Sr4Ca(PO4)2SiO4:Ce3+,Na+,Eu2+
Кл.слова (ненормированные):
Calcium -- Energy transfer -- Europium -- Light emission -- Light emitting diodes -- Luminescence -- Phosphate minerals -- Phosphors -- Photoluminescence -- Positive ions -- Rietveld refinement -- Tuning -- Chemical compositions -- Energy transfer mechanisms -- Green component -- Hexagonal cells -- Luminescence properties -- Single phase -- Solid state method -- White lightemitting diodes (WLEDs) -- Crystal structure
Аннотация: A new single phase based on the substitution of a Sr cation by a Ca cation in the apatite-type Sr5(PO4)2(SiO4) has been fabricated with the nominal chemical composition of Sr4Ca(PO4)2(SiO4), which appears as a definite compound rather than a solid solution between (Sr,Ca)3(PO4)2 and (Sr,Ca)2SiO4. The crystal structure of Sr4Ca(PO4)2(SiO4) has been firstly analysed by the difference electron map, and further resolved by the Rietveld refinement, and the final composition has been determined as Sr4Ca(PO4)(2+x)(SiO4)(1-x)(OH)x (x = 0.64) with a hexagonal cell (P63/m). The Ce3+/Eu2+ codoped Sr4Ca(PO4)2SiO4 phosphors have been designed and prepared by the solid state method, and the photoluminescence tuning from blue to green upon 365 nm ultraviolet (UV) radiation can be realized, which is ascribed to the energy transfer from Ce3+ to Eu2+ ions. The luminescence properties and the energy transfer mechanism in Ce3+/Eu2+ codoped Sr4Ca(PO4)2SiO4 phosphors have been discussed, which might act as potential candidates for blue-green components in UV-pumped white light emitting diodes (WLEDs). © 2016 The Royal Society of Chemistry.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation

Доп.точки доступа:
Zhang, M.; Xia, Z.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Shi, L.; Liu, Q.
}
Найти похожие

    Exploration of structural, thermal, vibrational and spectroscopic properties of new noncentrosymmetric double borate Rb3NdB6O12 / V. V. Atuchin [et al.] // Adv. Powder Technol. - 2017. - Vol. 28, Is. 5. - P. 1309-1315, DOI 10.1016/j.apt.2017.02.019. - Cited References: 42. - We are grateful to Guochun Zhang for the crystal structure data on K3YB6O12, and O. Tsydenova and A. Sarapulova for her consultations. This research was supported by SB RAS Program No.II.2P (No. 0356-2015-0412) and RSF (14-22-0143). The reported study was funded by RFBR according to the research projects 15-02-04950 and 15-52-53080, 16-32-00351, 16-52-48010 and 17-52-53031. Also, the work was supported by Act 211 Government of the Russian Federation, contract 02.A03.21.0011 and by the Ministry of Education and Science of the Russian Federation (4.1346.2017/PP). . - ISSN 0921-8831
   Перевод заглавия: Изучение структурных, тепловых, колебательных и спектроскопических свойств нового нецентросимметричного кристалла двойного бората Rb3NdB6O12
Кл.слова (ненормированные):
Rubidium neodymium borate -- Solid state reaction -- Rietveld refinement -- DSC -- Raman scattering
Аннотация: New noncentrosymmetric rare earth borate Rb3NdB6O12 is found in the ternary system Rb2O–Nd2O3–B2O3. The Rb3NdB6O12 powder was fabricated by solid state synthesis at 1050 K for 72 h and the crystal structure was obtained by the Rietveld method. Rb3NdB6O12 crystallized in space group R32 with unit cell parameters a = 13.5236(4), c = 31.162(1) Å, Z = 3. From DSC measurements, the reversible phase transition (I type) in Rb3NdB6O12 is observed at 852–936 K. The 200 μm thick tablet is transparent over the spectral range of 0.3–6.5 μm and the band gap is found as Eg ∼ 6.29 eV. Nonlinear optical response of Rb3NdB6O12 tested via SHG is estimated to be higher than that of K3YB6O12. Blue shift of Nd luminescent lines is found in comparison with other borates. The vibrational parameters of Rb3NdB6O12 are evaluated by experimental methods.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk, Russian Federation
Functional Electronics Laboratory, Tomsk State University, Tomsk, Russian Federation
Laboratory of Semiconductor and Dielectric Materials, Novosibirsk State University, Novosibirsk, Russian Federation
Institute of Chemistry, Tyumen State University, Tyumen, Russian Federation
Laboratory of Single Crystal Growth, South Ural State University, Chelyabinsk, Russian Federation
Laboratory of Oxide Systems, Baikal Institute of Nature Management, SB RAS, Ulan-Ude, Russian Federation
Laboratory of Coherent Optics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Laboratory for Nonlinear Optics and Spectroscopy, Siberian Federal University, Krasnoyarsk, Russian Federation
Laboratory of Nanodiagnostics and Nanolithography, Institute of Semiconductor Physics, SB RAS, Novosibirsk, Russian Federation
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Photonics and Laser Technologies, Siberian Federal University, Krasnoyarsk, Russian Federation
Laboratory of Condensed Matter Spectroscopy, Institute of Automation and Electrometry, SB RAS, Novosibirsk, Russian Federation
Laboratory of High Pressure Minerals and Diamond Deposits, Institute of Geology and Mineralogy, SB RAS, Novosibirsk, Russian Federation

Доп.точки доступа:
Atuchin, V. V.; Subanakov, A. K.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Bazarov, B. G.; Bazarova, J. G.; Dorzhieva, S. G.; Gavrilova, T. A.; Krylov, A. S.; Крылов, Александр Сергеевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Pugachev, A. M.; Tushinova, Y. L.; Yelisseyev, A. P.
}
Найти похожие

    Probing Eu2+ luminescence from different crystallographic sites in Ca10M(PO4)7:Eu2+ (M = Li, Na, and K) with β-Ca3(PO4)2-type structure / M. Chen [et al.] // Chem. Mater. - 2017. - Vol. 29, Is. 17. - P. 7563-7570, DOI 10.1021/acs.chemmater.7b02724. - Cited References: 34. - The present work was supported by the National Natural Science Foundation of China (Grants 51722202, 91622125, and 51572023), Natural Science Foundations of Beijing (2172036), and Fundamental Research Funds for the Central Universities (FRF-TP-16-002A3). C.C.L. and C.C.S. acknowledge the financial support from the Ministry of Science and Technology of Taiwan (Contract No. MOST 104-2113-M-027-007-MY3), and M. Molokeev acknowledges support of the Russian Foundation for Basic Research (17-52-53031). . - ISSN 0897-4756
   Перевод заглавия: Исследование люминесценции Eu2+ в разных кристаллографических положениях в Ca10M(PO4)7:Eu2+ (M = Li, Na and K) со структурой типа beta-Ca3(PO4)2
Кл.слова (ненормированные):
Calcium -- Doping (additives) -- Excited states -- Light emission -- Lithium -- Luminescence -- Phosphors -- Photoluminescence -- Positive ions -- Rietveld refinement -- Single crystals -- Color tuning -- Crystallographic sites -- Different distributions -- Emission bands -- Local environments -- Long wavelength bands -- Luminescent centers -- Power diffraction data -- Europium
Аннотация: Eu2+ local environments in various crystallographic sites enable the different distributions of the emission and excitation energies and then realize the photoluminescence tuning of the Eu2+ doped solid state phosphors. Herein we report the Eu2+-doped Ca10M(PO4)7 (M = Li, Na, and K) phosphors with β-Ca3(PO4)2-type structure, in which there are five cation crystallographic sites, and the phosphors show a color tuning from bluish-violet to blue and yellow with the variation of M ions. The difference in decay rate monitored at selected wavelengths is related to multiple luminescent centers in Ca10M(PO4)7:Eu2+, and the occupied rates of Eu2+ in Ca(1), Ca(2), Ca(3), Na(4), and Ca(5) sites from Rietveld refinements using synchrotron power diffraction data confirm that Eu2+ enters into four cation sites except for Ca(5). Since the average bond lengths d(Ca-O) remain invariable in the Ca10M(PO4)7:Eu2+, the drastic changes of bond lengths d(M-O) and Eu2+ emission depending on the variation from Li to Na and K can provide insight into the distribution of Eu2+ ions. It is found that the emission band at 410 nm is ascribed to the occupation of Eu2+ in the Ca(1), Ca(2), and Ca(3) sites with similar local environments, while the long-wavelength band (466 or 511 nm) is attributed to Eu2+ at the M(4) site (M = Na and K). We show that the crystal-site engineering approach discussed herein can be applied to probe the luminescence of the dopants and provide a new method for photoluminescence tuning.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center, KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, Taiwan
National Synchrotron Radiation Research Center, Hsinchu, Taiwan

Доп.точки доступа:
Chen, M.; Xia, Z.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Lin, C. C.; Su, C.; Chuang, Y. -C.; Liu, Q.
}
Найти похожие

    Structural and spectroscopic properties of new noncentrosymmetric self-activated borate Rb3EuB6O12 with B5O10 units / V. V. Atuchin [et al.] // Mater. Des. - 2018. - Vol. 140. - P. 488-494, DOI 10.1016/j.matdes.2017.12.004. - Cited References: 53. - We are grateful to Guochun Zhang for the crystal structure materials on K3YB6O12 and O. Tsydenova, A. Sarapulova for the consultations. The work was supported by Projects № 0356-2015-0412 of SB RAS Program № II.2P and № 0339-2016-0007. The reported study was funded by RFBR according to research projects 16-52-48010, 17-02-00920, 17-03-00886 and 17-52-53031 and RSF project 14-22-00143. The work was supported by Act 211 Government of the Russian Federation, contract № 02.A03.21.0011, and by the Ministry of Education and Science of the Russian Federation (5.5523.2017/8.9). This research was supported by Grant no. 8.2.01.2017 of Tomsk State University Academic D.I. Mendeleev Fund Program. . - ISSN 0264-1275
   Перевод заглавия: Структурные и спектроскопические характеристики самоактивированного бората Rb3EuB6O12 со структурными единицами B5O10
Кл.слова (ненормированные):
Rubidium rare earth borate -- Solid state reaction -- Rietveld refinement -- Raman -- Infrared spectroscopy -- Luminescence
Аннотация: New noncentrosymmetric double borate Rb3EuB6O12 was designed and synthesized by the solid state reaction method, and its crystallographic parameters were obtained by Rietveld analysis. This borate crystallizes in the trigonal space group R32 with cell parameters a = 13.4604(2) Å, c = 30.7981(5) Å, Z = 15. Its structure features a three-dimensional framework composed of the [B5O10]5 − groups that are bridged by Eu-O polyhedra. The existence of B5O10 group in the structure was confirmed by vibrational spectroscopy. Rb3EuB6O12 melts incongruently at 1101 K. The second harmonic generation effect of Rb3EuB6O12 is 16 times higher than that of the α-quartz standard. In the luminescence spectrum, the domination of a single prominent narrow line from the hypersensitive 5D0 - 7F2 manifold of Eu3 + ions is observed, while the 5D0 - 7F1 manifold and ultranarrow 5D0 - 7F0 line are of comparable peak intensity. These features are explained by a specific local symmetry of the Eu3+ ion within the crystal structure of Rb3EuB6O12.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk, Russian Federation
Functional Electronics Laboratory, Tomsk State University, Tomsk, Russian Federation
Laboratory of Single Crystal Growth, South Ural State University, Chelyabinsk, Russian Federation
Baikal Institute of Nature Management, SB RAS, Ulan-Ude, Russian Federation
Buryat State University, Ulan-Ude, Russian Federation
Laboratory of Coherent Optics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, Russian Federation
Laboratory of Nanodiagnostics and Nanolithography, Institute of Semiconductor Physics, SB RAS, Novosibirsk, Russian Federation
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Photonics and Laser Technologies, Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Chemistry, Lomonosov Moscow State University, Moscow, Russian Federation

Доп.точки доступа:
Atuchin, V. V.; Subanakov, A. K.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Bazarov, B. G.; Bazarova, J. G.; Gavrilova, T. A.; Krylov, A. S.; Крылов, Александр Сергеевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Stefanovich, S. Y.
}
Найти похожие

10.

    The electronic and optical properties of a narrow-band red-emitting nanophosphor K2NaGaF6:Mn4+ for warm white light-emitting diodes / C. Jiang [et al.] // J. Mater. Chem. C. - 2018. - Vol. 6, Is. 12. - P. 3016-3025, DOI 10.1039/c7tc05098d. - Cited References: 55. - We acknowledge the financial support received from the Program for Innovative Research Team in University of Ministry of Education of China (Grant No. IRT_17R38), the Key Program of Guangzhou Scientific Research Special Project (Grant No. 201607020009), the National Natural Science Foundation of China (Grant No. 51672085, 51322208, 3160440), and the Fundamental Research Funds for the Central Universities. M. G. Brik acknowledges the supports received from the Recruitment Program of High-end Foreign Experts (Grant No. GDW20145200225), the Programme for the Foreign Experts offered by Chongqing University of Posts and Telecommunications, Ministry of Education and Research of Estonia, (Project PUT430) and European Regional Development Fund (Project TK141), and the Guest Professorship at Kyoto University (Prof. S. Tanabe laboratory). The first-principles calculations were carried out using the resources provided by the Wroclaw centre for Networking and Supercomputing (http://wcss.pl; Grant No. WCSS#10117290). . - ISSN 2050-7534
   Перевод заглавия: Электронные и оптические свойства узкополосного нанолюминофора K2NaGaF6:Mn4+ , излучающего красный свет, для белых светодиодов излучающих теплый белый свет
Кл.слова (ненормированные):
Energy efficiency -- Gallium compounds -- Light emission -- Light emitting diodes -- Manganese -- Manganese compounds -- Optical properties -- Phosphors -- Precipitation (chemical) -- Quenching -- Rietveld refinement -- Sodium compounds
Аннотация: Recently, as a key red component in the development of warm white light-emitting diodes (WLEDs), Recently, as a key red component in the development of warm white light-emitting diodes (WLEDs), Mn4+-doped fluorides with narrow red emission have sparked rapidly growing interest because they improve color rendition and enhance the visual energy efficiency. Herein, a red nanophosphor, K2NaGaF6:Mn4+, with a diameter of 150-250 nm has been synthesized using a simple co-precipitation method. Rietveld refinement reveals that it crystallizes in the space group Fm3m with the cell parameter a = 8.25320(4) Å. The exchange charge model (ECM) has been used to calculate the energy levels of Mn4+ ions in K2NaGaF6, which match well with the experimental spectra. The as-synthesized phosphor exhibits a narrow red emission at around 630 nm (spin-forbidden 2Eg → 4A2 transition of Mn4+ ions) when excited at 365 nm (4A2g → 4T1g) and 467 nm (4A2g → 4T2g), with a quantum efficiency (QE) of 61% and good resistance to thermal quenching. Based on the structure, the formation mechanism of ZPL has been discussed. In addition, the concentration-dependent decay curves of Mn4+ in K2NaGaF6 were fitted using the Inokuti-Hirayama model, suggesting that the dipole-dipole interactions determine the concentration quenching. Finally, encouraged by the good performance, a warm LED with a CRI of 89.4 and CCT of 3779 K was fabricated by employing the title nanophosphor as the red component. Our findings suggest that K2NaGaF6:Mn4+ can be a viable candidate for the red phosphor used in warm WLEDs.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
China-Germany Research Center for Photonic Materials and Device, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
School of Applied Physics and Materials, Wuyi University Jiangmen, Guangdong, China
College of Mathematics and Physics, Chongqing University of Posts and Telecommunications, Chongqing, China
Institute of Physics, University of Tartu, W. Ostwald Str. 1, Tartu, Estonia
Institute of Physics, Jan Dlugosz University, Armii Krajowej 13/15, Cz?stochowa, Poland
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong

Доп.точки доступа:
Jiang, C.; Brik, M. G.; Li, L.; Peng, J.; Wu, J.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Wong, K. -L.; Peng, M.
}
Найти похожие