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A comparative study of the structure of copper and lead xanthates / S. A. Vorobyev [et al.] // J. Struct. Chem. - 2017. - Vol. 58, Is. 6. - P. 1144-1151, DOI 10.1134/S0022476617060117. - Cited References: 38 . - ISSN 0022-4766
Кл.слова (ненормированные):
copper xanthate -- lead xanthate -- dixanthogen -- structure -- XPS -- EXAFS -- solid state NMR
Аннотация: XPS, PbL3 and CuK EXAFS, solid state NMR, and EPR techniques are used to study insoluble products formed in the interaction of aqueous solutions of lead(II) nitrate and copper (II) sulfate with potassium nbutylxanthate (KX). The XPS spectra of lead xanthates with the composition PbX2 are similar to those of KX, and interatomic distances of 0.279 nm suggest a nearly ionic character of Pb–S bonds. In copper xanthate precipitating together with dixanthogen (approximately 15 wt.%), the Cu(I)–S bond length is smaller (0.229 nm), and copper coordination number of 2.9 in a composite with dixanthogen increases to 3.3 after its removal by washing with acetone. The XPS spectra indicate the covalent character of the bond and non-equivalence of xanthate radicals. Solid state 1H and 13C NMR spectra as well as the actual absence of metal lines under the measurement conditions demonstrate strong disordering of the structure of xanthates, which is stronger for PbX2 and weakest in CuX after the removal of dixanthogen. EPR reveals sulfur-containing radicals and Cu2+ in CuX, however, their amounts are insignificant and decrease after the washing with acetone. The results of the work are significant for the understanding of the reactivity of xanthates, in particular, under the conditions of flotation of base metal ores.

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Публикация на русском языке Сравнительное исследование структуры ксантогенатов меди и свинца [Текст] / C. А. Воробьев [и др.] // Журн. структ. химии. - 2017. - Т. 58 № 6. - С. 1191-1198

Держатели документа:
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation
Kirensky Insitute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vorobyev, S. A.; Saikova, S. V.; Erenburg, S. B.; Trubina, S. V.; Ivanov, Y. N.; Иванов, Юрий Николаевич; Maksimov, N. G.; Mikhlin, Y. L.
}
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A complex of ceftriaxone with Pb(II): synthesis, characterization, and antibacterial activity study / A. O. Lykhin [et al.] // J. Coord. Chem. - 2014. - Vol. 67, Is. 16. - З. 2783-2794, DOI 10.1080/00958972.2014.938065. - Cited References: 48. - The reported study was supported by RFBR, research project No. 14-03-31, 170 MOJI_a and Krasnoyarsk regional fund for supporting scientific and technological activities. We thank the Center for Equipment Joint Use of the Siberian Federal University. We are grateful to the HPC Research Departments of Siberian Federal University and Moscow University Supercomputing Center (SKIF MSU "Chebyshev") for the access to the high-performance computer clusters. . - ISSN 0095-8972. - ISSN 1029-0389

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
BETA-LACTAM ANTIBIOTICS
   TERNARY COMPLEX
   METAL-COMPLEXES
   BASIS-SETS
   3 DECADES
   RESISTANCE
   COPPER(II)
   CEPHALOSPORINS
   EVOLUTION
   1ST-ROW
Кл.слова (ненормированные):
Ceftriaxone lead(II) complex -- DFT -- IR spectroscopy -- TGA -- Antibacterial screening
Аннотация: A Pb(II) complex with ceftriaxone (H2Ceftria) antibiotic was synthesized by reaction of ceftriaxone disodium salt (hemi)heptahydrate with lead nitrate in water–ethanol medium. The complex was characterized on the basis of complexometric titration, spectrophotometric and thermogravimetric analyses, capillary electrophoresis, IR, Raman and UV–vis spectroscopies, and density functional theory calculations. Pb(II) is five-coordinate with distorted square pyramidal geometry. The coordination of Ceftria2− to Pb(II) occurs through N and O of the triazine, lactam carbonyl, carboxylate, and amine groups. The antibacterial activity study showed that Klebsiella pneumoniae is resistant to [Pb(Ceftria)]·3H2O. The antibacterial activity of [Pb(Ceftria)]·3H2O against Staphylococcus aureus is reduced compared with ceftriaxone. In contrast, the antibacterial activity of [Pb(Ceftria)]·3H2O against Escherichia coli is 28% higher than that of ceftriaxone antibiotic.

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Держатели документа:
Siberian Fed Univ, Dept Chem, Krasnoyarsk, Russia
Siberian State Aerosp Univ, Informat Sci & Telecommun Inst, Krasnoyarsk, Russia
Russian Acad Sci, LV Kirensky Inst Phys, Siberian Branch, Krasnoyarsk, Russia
Siberian State Technol Univ, Dept Phys, Krasnoyarsk, Russia
Univ Nevada, Dept Chem, Reno, NV 89557 USA

Доп.точки доступа:
Lykhin, A. O.; Лыхин А. О.; Novikova, G. V.; Новикова Г. В.; Kuzubov, A. A.; Кузубов, Александр Александрович; Staloverova, N. A.; Сталоверова Н. А.; Sarmatova, N. I.; Сарматова Н. И.; Varganov, S. A.; Варганов, Сергей Александрович; Krasnov, P. O.; Краснов, Павел Олегович; RFBR [14-03-31, 170 MOJI_a]
}
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Acoustical and acoustooptical properties of lead tetraborate single crystals / K. S. Aleksandrov [et al.] // Phys. Solid State. - 2004. - Vol. 46, Is. 9. - P. 1637-1638, DOI 10.1134/1.1799178. - Cited References: 6 . - ISSN 1063-7834
Рубрики:
STRONTIUM
Аннотация: The velocities of bulk acoustic waves and the acoustooptical Q factors M-2 are measured. The results of these measurements are used for calculating the photoelastic coefficients of a lead tetraborate single crystal. (C) 2004 MAIK "Nauka/Interperiodica".

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

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

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Zamkov, A. V.; Замков, Анатолий Васильевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Turchin, P. P.; Sysoev, A. M.; Parfenov, A. A.
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Caloric characteristics of PbTiO3 in the temperature range of the ferroelectric phase transition / E. A. Mikhaleva [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 9. - P. 1832-1840, DOI 10.1134/S1063783412090181. - Cited References: 31. - This study was supported by the Russian Foundation for Basic Research (project no. 12-08-00079) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-4828.2012.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
   LEAD TITANATE
   DIELECTRIC PROPERTIES
   SOLID-SOLUTIONS
   PRESSURE
   PEROVSKITES
   DEPENDENCE
   BEHAVIOR
   HEAT
Аннотация: The heat capacity and thermal expansion of the PbTiO3 ceramic sample have been measured in the temperature range 80–970 K. The electrocaloric and barocaloric efficiencies of lead titanate in the ferroelectric phase transition range have been investigated by analyzing the experimental data in terms of the thermodynamic theory of phase transitions, the electrical equation of state P(T, E), the Pippard equation, and the S(T, p) diagram.

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Публикация на русском языке Калорические характеристики PbTiO3 в области сегнетоэлектрического фазового перехода [Текст] / Е. А. Михалева [и др.] // Физ. тверд. тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54 Вып. 9. - С. 1719-1726

Держатели документа:
[Mikhaleva, E. A.
Flerov, I. N.
Gorev, M. V.] Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia
[Mikhaleva, E. A.
Flerov, I. N.
Gorev, M. V.
Molokeev, M. S.
Cherepakhin, A. V.
Kartashev, A. V.
Mikhashenok, N. V.
Sablina, K. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Kartashev, A. V.; Карташев, Андрей Васильевич; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Sablina, K. A.; Саблина, Клара Александровна
}
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    Colloidal and immobilized nanoparticles of lead xanthates / S. A. Vorobyev [et al.] // ACS Omega. - 2019. - Vol. 4, Is. 7. - P. 11472-11480, DOI 10.1021/acsomega.9b00841. - Cited References: 56. - This research was supported by Russian Science Foundation, project 18-17-00135. . - ISSN 2470-1343
   Перевод заглавия: Коллоидные и иммобилизированные наночастицы ксантогенатов свинца
Аннотация: Although nanoparticles of heavy metal xanthates and their hydrosols can play important roles in froth flotation, environmental issues, analytics, and manufacturing of metal sulfide nanocomposites, they have received little attention. We studied colloidal solutions and immobilized particles prepared via interaction of aqueous lead nitrate with alkyl xanthates applying UV−vis absorption spectroscopy, dynamic light scattering, zeta potential measurement, thermogravimetry analysis, Fourier transform infrared spectroscopy, Raman scattering, X-ray photoelectron spectroscopy, atomic force microscopy, and transmission electron microscopy. The hydrodynamic diameter of colloidal particles of Pb(SSCOR)2 decreased from 500 to 50 nm with an increase in the alkyl radical length and the initial xanthate to lead ratio (X/Pb); the zeta potential magnitude varied similarly, although it remained negative. The effect of pH in the range of 4.5−11 was minor, but the colloids produced using excess of Pb2+ in alkaline media were close to PbX and decomposed much easier than PbX2. The uptake of lead xanthates on supports was generally low because of negative charges of the colloids; however, 50−100 nm thick PbX2 films were deposited on PbS and SiO2 from the media of X/Pb 2 and pH 9 because of preadsorption of Pb2+, while nanorods formed on highly oriented pyrolytic graphite.

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Держатели документа:
Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Scientific Center”, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/24, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny pr. 79, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center” of, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Vorobyev, S. A.; Saikova, S. V.; Novikova, S. A.; Fetisova, O. Y.; Zharkov, S. M.; Жарков, Сергей Михайлович; Krylov, A. S.; Крылов, Александр Сергеевич; Likhatski, M. N.; Mikhlin, Y. L.
}
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    Composition design, optical gap and stability investigations of lead-free halide double perovskite Cs2AgInCl6 / J. Zhou [et al.] // J. Mater. Chem. A. - 2017. - Vol. 5, Is. 29. - P. 15031-15037, DOI 10.1039/c7ta04690a. - Cited References: 42. - The present work was supported by the National Natural Science Foundation of China (Grants 91622125 and 51572023), Natural Science Foundations of Beijing (2172036), and Fundamental Research Funds for the Central Universities (FRF-TP-16-002A3). XZ acknowledges the support from the National Key Research and Development Program of China Grant No. 2016YFB0700700. . - ISSN 2050-7488
   Перевод заглавия: Моделирование состава, оптический зазор и исследования стабильности безсвинцового галогенидного двойного перовскита Cs2AgInCl6
Кл.слова (ненормированные):
Crystal growth -- Design for testability -- Energy gap -- Optical properties -- Perovskite -- Perovskite solar cells -- Solar absorbers -- Solar cells -- Structural design -- Band gap engineering -- Direct-gap semiconductor -- Environmentally benign -- Hydrothermal crystal growth -- Hydrothermal reaction -- Optoelectronic applications -- Rock salt structures -- Solar cell absorbers -- Crystal structure
Аннотация: The discovery of lead-free double perovskites provides a feasible way of searching for air-stable and environmentally benign solar cell absorbers. Herein we report the design and hydrothermal crystal growth of double perovskite Cs2AgInCl6. The crystal structure, morphology related to the crystal growth habit, band structure, optical properties, and stability are investigated in detail. This perovskite crystallized in a cubic unit cell with the space group Fm3m and is composed of [AgCl6] and [InCl6] octahedra alternating in a ordered rock-salt structure, and the as-obtained crystal size is dependent on the hydrothermal reaction time. Cs2AgInCl6 is a direct gap semiconductor with a wide band gap of 3.23 eV obtained experimentally and 3.33 eV obtained by DFT calculation. This theoretically predicted and experimentally confirmed optical gap is a prototype of the band gaps that are direct and optically allowed except at the single high-symmetry k-point, which didn't raise interest before but have potential applications in future technologies. Cs2AgInCl6 material with excellent moisture, light and heat stability shows great potential for photovoltaic and other optoelectronic applications via further band gap engineering. © 2017 The Royal Society of Chemistry.

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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
Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, College of Electronic Science and Technology, Shenzhen University, Guangdong, China
College of Optoelectronic Engineering, Shenzhen University, Guangdong, China

Доп.точки доступа:
Zhou, J.; Xia, Z.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhang, X.; Peng, D.; Liu, Q.
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Contributions from Inter-grain Boundaries to the Magneto-resistive Effect in Polycrystalline High-T (C) Superconductors. The Underlying Reason of Different Behavior for YBCO and BSCCO Systems / D. A. Balaev [et al.] // J. Supercond. Nov. Magn. - 2011. - Vol. 24, Is. 7. - P. 2129-2136, DOI 10.1007/s10948-011-1166-9. - Cited References: 30. - This work is supported by program N5 of RAS, project N7. . - ISSN 1557-1939

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTORS
   PHASE-SLIP
   TRANSPORT-PROPERTIES
   TRANSITION
   FIELD
   COMPOSITES
   BULK
   TAPES
   YBA2CU3O7-DELTA
   DISSIPATION
Кл.слова (ненормированные):
BSCCO -- YBCO -- Intergrain boundaries -- Magnetoresistance -- BSCCO -- Intergrain boundaries -- Magnetoresistance -- YBCO -- BSCCO -- BSCCO system -- Comparative studies -- High Tc superconductors -- High-field -- Inter-grain -- Irreversibility lines -- Magneto-resistive effect -- Polycrystalline -- Resistive transition -- Standard measurements -- Weak pinning -- YBCO -- Bismuth -- Electric resistance -- Grain boundaries -- High temperature superconductors -- Lead -- Magnetic fields -- Magnetoelectronics -- Magnetoresistance -- Magnetos -- Superconductivity -- Yttrium barium copper oxides -- Semiconductor metal boundaries
Аннотация: In order to clarify the mechanisms in charge of broadening of resistive transition R(T) in magnetic fields of bismuth-based polycrystalline high-T (C) superconductor (HTSC), a comparative study of Bi1.8Pb0.3Sr1.9Ca2Cu3O (x) (BSCCO) and YBa2Cu3O7-delta (YBCO) have been performed. Magnetoresistive effects and irreversibility line obtained from magnetic measurements have been studied. It was established that (1) for YBCO, the smooth part of R(T) dependence unambiguously corresponds to dissipation in the intergrain boundaries for arbitrary magnetic fields; (2) for polycrystalline BSCCO, the smooth part of R(T) dependences correspond to dissipation within intergrain boundary subsystem in the field range H <10(2) Oe only, while standard measurements of R(T) dependences in magnetic field range H > 10(2) Oe reflect the dissipation processes occurring both in intergrain boundary and HTSC grain subsystems; (3) for the high-field range, the contribution from intergrain boundaries of BSCCO can be distinguished from magnetoresistance R(H) dependences obtained at high enough current density on textured samples. It is proposed that various magneto-resistive properties of these classical HTSC systems are due comparatively weak pinning in BSCCO.

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Держатели документа:
[Balaev, D. A.
Popkov, S. I.
Semenov, S. V.
Bykov, A. A.
Dubrovskiy, A. A.
Shaikhutdinov, K. A.
Petrov, M. I.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Balaev, D. A.
Popkov, S. I.
Sabitova, E. I.
Dubrovskiy, A. A.
Shaikhutdinov, K. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
L.V. Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Semenov, S. V.; Семенов, Сергей Васильевич; Bykov, A. A.; Быков, Алексей Анатольевич; Sabitova, E. I.; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
}
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Crystal structure, luminescence, and thermodynamic properties of Pb10–xEux(GeO4)2+x(VO4)4–x (x = 0.1, 0.2, 0.3) substituted apatites / L. T. Denisova, M. S. Molokeev, A. S. Aleksandrovskii [et al.] // Inorg. Mater. - 2021. - Vol. 57, Is. 11. - P. 1158-1166, DOI 10.1134/S0020168521110030. - Cited References: 26. - This work was supported in part by the Russian Federation Ministry of Science and Higher Education as part of the state research target for the Siberian Federal University federal state autonomous educational institution of higher education, project no. FSRZ-2020-0013 . - ISSN 0020-1685
Кл.слова (ненормированные):
apatites -- lead europium germanatovanadates -- X-ray diffraction -- structure -- luminescence -- high-temperature heat capacity
Аннотация: Pb10 – xEux(GeO4)2 + x(VO4)4 – x (x = 0.1, 0.2, 0.3) Eu-substituted lead germanatovanadates with the apatite structure have been prepared by solid-state reactions, via firing in air in the temperature range 773–1073 K, using oxides (PbO, Eu2O3, GeO2, and V2O5) as starting materials. Using X-ray diffraction, we have determined the hexagonal cell parameters (sp. gr. P63/m) of the synthesized phases and refined their crystal structure (the atomic position coordinates, isotropic thermal parameters, and principal bond lengths in their structure are presented). We have measured the luminescence spectra of the Pb10 – xEux(GeO4)2 + x(VO4)4 – x (x = 0.1, 0.2, 0.3) apatites and shown that europium concentration has little effect on the shape of the luminescence spectra. Using experimental heat capacity data obtained for polycrystalline samples by differential scanning calorimetry in the temperature range 350–1050 K, we calculated the main thermodynamic functions of the Eu-substituted lead germanatovanadates.

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Публикация на русском языке Кристаллическая структура, люминесцентные и термодинамические свойства замещенных апатитов Pb10 – xEux(GeO4)2 + x(VO4)4 – x (x = 0.1, 0.2, 0.3) [Текст] / Л. Т. Денисова, М. С. Молокеев, А. С. Александровский [и др.] // Неорган. матер. - 2021. - Т. 57 № 11. - С. 1226-1234

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center (Federal Research Center), Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, 119334, Russian Federation

Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Aleksandrovskii, A. S.; Александровский, Александр Сергеевич; Kargin, Y. F.; Golubeva, E. O.; Denisov, V. M.
}
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Dielectric properties of a mixed-valence Pb3Mn7O15 manganese oxide / N. V. Volkov [et al.] // J. Phys.: Condens. Matter. - 2010. - Vol. 22, Is. 37. - Ст. 375901, DOI 10.1088/0953-8984/22/37/375901. - Cited References: 14. - This study was supported by the Russian Foundation for Basic Research 'Siberia', project No. 09-02-98003, and the Siberian Branch of the Russian Academy of Sciences, integration project No. 101. . - ISSN 0953-8984

РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
cation -- lead -- manganese derivative -- oxide -- article -- chemical model -- chemistry -- crystallization -- electric conductivity -- electronics -- methodology -- temperature -- Cations -- Crystallization -- Electric Conductivity -- Electronics -- Lead -- Manganese Compounds -- Models, Chemical -- Oxides -- Temperature -- AC electric field -- Analysis of resistivity -- Carrier hopping -- Charge ordering -- Complex dielectric constant -- Crystal site -- Debye models -- Dielectric constants -- Dielectric spectra -- Frequency windows -- Lattice sites -- Low frequency -- Manganese ions -- Mixed valence -- Mixed valence state -- Relaxation behaviors -- Temperature range -- Electric fields -- Manganese -- Manganese oxide -- Permittivity -- Single crystals -- Crystal symmetry
Аннотация: We investigated the low-frequency dielectric properties of a Pb3Mn7O15 single crystal with manganese ions in the mixed-valence state (Mn3+/Mn4+). Dielectric relaxation was found in the frequency window from 20 to 100 kHz in the temperature range 110-180 K. The dielectric spectra of the crystal were analyzed using a Debye model. Estimations made within the model and analysis of resistivity data suggest that the relaxation behavior of the dielectric constant is related to polaronic charge carrier hopping. Around 250 K, charge ordering occurs in the crystal when the Mn3+ and Mn4+ ions are arranged in a specific order among the crystal sites. With a decrease in temperature, an ac electric field can induce a charge hop between the equivalent lattice sites available, related to crystal symmetry. This hopping is equivalent to the reorientation of an electric dipole that yields Debye-type behavior of the complex dielectric constant. The observed anisotropy in the behavior of the dielectric properties and resistivity can be attributed to a pronounced two-dimensional character of the crystal structure.

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Держатели документа:
[Volkov, N. V.
Eremin, E. V.
Sablina, K. A.
Sapronova, N. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
L V Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russia.
L V Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Sablina, K. A.; Саблина, Клара Александровна; Sapronova, N. V.
}
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10.

Efficiency of energy harvesting and storage using a multilayer capacitor based on BaTi0.86Sn0.14O3 ferroelectric lead-free ceramics / V. D. Fokina, V. S. Bondarev, E. I. Pogoreltsev, I. N. Flerov // Ceram. Int. - 2022. - Vol. 48, Is. 22. - P. 32966-32972, DOI 10.1016/j.ceramint.2022.07.227. - Cited References: 45 . - ISSN 0272-8842
Кл.слова (ненормированные):
Ferroelectric properties -- BaTiO3 and titanates -- Capacitors -- Energy harvesting/storage
Аннотация: The study of the parameters of energy harvesting and storage in the lead-free solid solution BaTi0.86Sn0.14O3 (BTSnO) was performed. The permittivity shows the behavior similar to a diffuse phase transition with the critical exponent γ = 1.84, which is close to the value characteristic of relaxors. Large values of the recoverable energy density, Wrec=(5.8–7.0)∙104 J/m3, and the energy storage efficiency coefficient, η=(82–94) %, are implemented in a wide temperature range, 30–87°С, at a low electric field, E = 18.5 kV/cm. For the first time, the analysis of the Olsen cycle was performed using two phase diagrams: polarization – electric field and entropy – temperature. A fairly good agreement was found between the values of the energy conversion density, ND ≈ 0.15 J/cm3, which was determined using two approaches. A universal parameter is proposed for comparing the energy harvesting density for the materials studied in different ranges of temperature and electric fields.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660074, Russian Federation

Доп.точки доступа:
Fokina, V. D.; Фокина, Валентина Дмитриевна; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Pogoreltsev, E. I.; Погорельцев, Евгений Ильич; Flerov, I. N.; Флёров, Игорь Николаевич
}
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11.

Golovnev, N. N.
The crystal structure of lead(II) 1,3-diethyl-2-thiobarbiturate / N. N. Golovnev, M. S. Molokeev, I. I. Golovneva // Russ. J. Coord. Chem. - 2015. - Vol. 41, Is. 5. - P. 300-304, DOI 10.1134/S1070328415050012. - Cited References:25 . - ISSN 1070. - ISSN 1608-3318. -

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
HYDROGEN-BOND
   COMPLEXES
   ACID
   2-THIOBARBITURATE
   DIFFRACTION
   SERIES
Аннотация: The complex [Pb2(DETBA)4] n (I), where HDETBA is 1,3-diethyl-2-thiobarbituric acid (C8H12N2O2S), was obtained and structurally characterized by X-ray diffraction (CIF file CCDC no. 1031501). The crystals of complex I are trigonal: a = 12.9503(3), c = 32.077(1) Å, V = 4658.9(3) Å3, space group R3¯ , Z = 9. One of the crystallographically independent lead ions, Pb(1)2+, is coordinated in an octahedral fashion by six DETBA− ions through the O atoms. The other ion, Pb(2)2+, is coordinated to six DETBA− ions through three O atoms and three S atoms making up a trigonal prism. The polyhedra Pb(1)O6 and Pb(2)O6 are united through bridging DETBA− ions into infinite layers. The ligands are linked by neither intermolecular hydrogen bonds nor π-π interactions.

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Публикация на русском языке Головнёв, Николай Николаевич. Кристаллическая структура 1,3-диэтил-2-тиобарбитурата свинца(II) [Текст] / Н. Н. Головнёв, М. С. Молокеев, И. И. Головнева // Координ. химия : Наука, 2015. - Т. 41 № 5. - С. 266–270

Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk, Russia.
Far Eastern State Transport Univ, Khabarovsk, Russia.
State Agr Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Golovneva, I. I.
}
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12.

    Growth, optical and microstructural properties of PbB4O7 plate crystals / A. I. Zaitsev [et al.] // Opt. Mater. - 2014. - Vol. 37. - P. 298–301, DOI 10.1016/j.optmat.2014.06.012. - Cited References: 42. - This study is supported by SB RAS via Projects 28.14 and 43.14, and the Grant of the President of the Russian Federation for the support of leading scientific schools SS-4828.2012.2 and by PSB RAS, Grant 2.5.2. V.V.A. gratefully acknowledge the Ministry of Education and Science of the Russian Federation for financial support . - ISSN 0925-3467. - ISSN 1873-1252
   Перевод заглавия: Рост, оптические и микроструктурные свойства пластинчатых кристаллов PbB4O7

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
LEAD TETRABORATE
   SINGLE-CRYSTAL
   SUSCEPTIBILITIES
   ANISOTROPY
   STRONTIUM
   SURFACES
   RAMAN
Кл.слова (ненормированные):
PbB4O7 -- Czochralski growth -- Facet -- RHEED -- AFM
Аннотация: Centimeter-sized optical quality plate-like PbB4O7 crystals have been grown by Czochralski method. The fundamental absorption edge has been found at 237 nm (corresponding bandgap 5.75 eV) with the distinct sideband protruding up to 300 nm. The crystals are well faceted with the (100), (010) and (101) planes, (100) surfaces being mostly developed. The etching in diluted nitric acid (5 wt.%) at the temperature of 90 °C have been used to reveal the defect structure and remove melt residuals. The (100) surface shows the presence of etching pits and twin boundaries. The Kikuchi line pattern and developed microrelief with the roughness of ~8 nm have been observed by RHEED and AFM, respectively.

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Держатели документа:
SB RAS, Akademgorodok, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 690036, Russia
Akademgorodok, SB RAS, Kirensky Inst Phys, Lab Coherent Opt, Krasnoyarsk 690036, Russia
Russian Acad Sci, Inst Semicond Phys, Lab Nanodiagnost & Nanolithog, SB RAS, Novosibirsk 630090, Russia
Russian Acad Sci, Inst Semicond Phys, Lab Opt Mat & Struct, SB RAS, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Novosibirsk 630090, Russia

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Kozhukhov, A. S.; Pokrovsky, L. D.; Atuchin, V. V.; SB RAS [28.14, 43.14]; President of the Russian Federation for the support of leading scientific schools [SS-4828.2012.2]; PSB RAS [2.5.2]; Ministry of Education and Science of the Russian Federation
}
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13.

Heat capacity and magnetocaloric effect in manganites (La1-yEuy)(0.7)Pb0.3MnO3 (y:0.2; 0.6) / A. V. Kartashev [et al.] // J. Magn. Magn. Mater. - 2010. - Vol. 322, Is. 6. - P. 622-627, DOI 10.1016/j.jmmm.2009.10.026. - Cited Reference Count: 17. - Гранты: This work was supported by the Krasnoyarsk's regional sciences foundation and RFBR in the framework of project "Siberia''(Grant no. 09-02-98001), by Integrational project of Siberian and Far Eastern Departments of RAS(no. 101) and by Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools(Projectno. NSh-1011.2008.2). Dr Maxim S. Molokeev is acknowledged for the X-raycharacterization of the samples. - Финансирующая организация: Krasnoyarsk's regional sciences foundation [09-02-98001]; Siberian and Far Eastern Departments [101]; Russian Federation [NSh-1011.2008.2] . - MAR. - ISSN 0304-8853
Рубрики:

Кл.слова (ненормированные):
Manganites -- Magnetic phase transition -- Heat capacity -- Magnetocaloric effect -- Heat capacity -- Magnetic phase transition -- Magnetocaloric effect -- Manganites -- Adiabatic calorimeters -- Heat capacities -- Magnetic phase transitions -- Magneto-caloric effects -- Magnetocaloric effect -- Multi-element -- Nonmagnetics -- Relative cooling power -- Temperature range -- Europium -- Lead -- Manganese compounds -- Oxide minerals -- Specific heat -- Phase transitions
Аннотация: Heat capacity and intensive magnetocaloric effect (MCE) in manganites (La1-yEuy)(0.7)Pb0.3MnO3[y=0.2; 0.6] (LEPM) were investigated by means of adiabatic calorimeter. The heat capacity anomaly as well as the values of both the intensive (Delta T-AD) and the extensive (Delta S-MCE) MCE were found to decrease upon increased replacement of La with nonmagnetic Eu. However, because of widening of the MCE peaks, the LEPM compounds show the relative cooling power, RCP/Delta H, comparable to other solid solutions of manganites. Owing to strong effect of Eu -> La substitution on the Curie temperature, LEPM might have potential as the solid state refrigerants in multi-element cooling apparatus operating in a wide temperature range. (C) 2009 Elsevier B.V. All rights reserved.

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Держатели документа:
SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Kartashev, A. V.; Карташев, Андрей Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Volkov, N. V.; Волков, Никита Валентинович; Sablina, K. A.; Саблина, Клара Александровна
}
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14.

Heat capacity of a mixed-valence manganese oxide Pb(3)Mn(7)O(15) / N. V. Volkov [et al.] // J. Phys.: Condens. Matter. - 2008. - Vol. 20, Is. 44. - Ст. 445214, DOI 10.1088/0953-8984/20/44/445214. - Cited References: 11. - This study was supported by the INTAS (project No 061000013-9002), the Division of Physical Sciences of RAS, program `Spin-dependent Effects in Solids and Spintronics' (project No. 2.4.2 of SB RAS), the President of the Russian Federation, grant for Support of Leading Scientific Schools (project No. NSh-1011.2008.2), KRSF-RFBR `Enisey2007', project No. 07-02-96801-a, and the Siberian Branch of RAS, Integration project No. 3.7. . - ISSN 0953-8984

РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
Antiferromagnetism -- Crystallography -- Entropy -- Lead alloys -- Magnetic materials -- Magnetism -- Manganese -- Manganese compounds -- Powders -- Single crystals -- Specific heat -- Spin dynamics -- Antiferromagnetic orders -- Charge localizations -- Entropy losses -- Excess heat capacities -- Experimental datums -- Heat capacities -- Magnetic contributions -- Magnetic orders -- Magnetic states -- Magnetic subsystems -- Magnetic transitions -- Manganese oxides -- Nonmagnetic -- Spin systems -- Temperature curves -- Temperature dependences -- Temperature intervals -- Temperature ranges -- Manganese alloys
Аннотация: We present the results of a heat capacity study of Pb(3)Mn(7)O(15) single crystals with approximately equal concentrations of Mn(3+) and Mn(4+) ions. In the temperature interval between 210 and 260 K, an excess heat capacity of nonmagnetic origin, most likely associated with the process of charge localization, has been observed. Also, three pronounced anomalies corresponding to the changes in a magnetic subsystem of the crystal have been observed in the temperature dependence of the heat capacity. A broad hump near 150 K is related to the formation of a short-range magnetic order. This process of short-range ordering is rather prominent, considering the appreciable value of the entropy loss accompanying the change in the magnetic state. A clear lambda-shaped peak at 70 K marks the onset of a long-range antiferromagnetic order. Another anomalous contribution to the heat capacity of magnetic origin has been revealed at temperatures below 20 K. This contribution is associated with a magnetic transition of an unknown nature, which is also clearly evident in magnetization versus temperature curves. The total magnetic contribution to the entropy deduced from the actual experimental data over the entire temperature range is much smaller than is expected for a completely ordered Mn spin system in the crystal. We suggest several possible reasons that may account for this `missing' entropy.

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Держатели документа:
[Volkov, N. V.
Sablina, K. A.
Eremin, E. V.
Flerov, I. N.
Kartashev, A.] RAS, SB, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Volkov, N. V.
Flerov, I. N.] Siberian Fed Univ, Dept Phys, Krasnoyarsk 660041, Russia
[Boeni, P.] Tech Univ Munich, Dept Phys E21, D-85747 Garching, Germany
[Shah, V. R.] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA
[Rasch, J. C. E.
Boehm, M.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
[Rasch, J. C. E.
Schefer, J.] Swiss Fed Inst Technol, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
[Rasch, J. C. E.
Schefer, J.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
ИФ СО РАН
Kirensky Institute of Physics, SB, RAS, 660036 Krasnoyarsk, Russian Federation
Department of Physics, Siberian Federal University, 660041 Krasnoyarsk, Russian Federation
Physics Department E21, Technical University of Munich, D-85747 Garching, Germany
Physics Department, Indiana University, Bloomington, IN 47405, United States
Institut Laue-Langevin, 6 rue Jules Horowitz, 38042 Grenoble, Cedex 9, France
Laboratory for Neutron Scattering, ETH Zurich, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Sablina, K. A.; Саблина, Клара Александровна; Eremin, E. V.; Еремин, Евгений Владимирович; Boni, P.; Shah, V. R.; Flerov, I. N.; Флёров, Игорь Николаевич; Kartashev, A.; Rasch, JCE; Boehm, M.; Schefer, J.
}
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15.

Heat capacity study of relaxor PbMg1/3Nb2/3O3 in a wide temperature range / M. V. Gorev [et al.] // J. Exp. Theor. Phys. - 2003. - Vol. 96, Is. 3. - P. 531-537, DOI 10.1134/1.1567427. - Cited References: 21 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
DIFFUSE PHASE-TRANSITION
FERROELECTRICS
Кл.слова (ненормированные):
Differential scanning calorimetry -- Mathematical models -- Phonons -- Random processes -- Specific heat -- Spectrum analysis -- Thermal effects -- Bond-random field models -- Wide temperature intervals -- Lead compounds
Аннотация: Heat capacity of the PbMg1/3Nb2/3O3 compound is measured using the methods of adiabatic and differential scanning calorimetry in the temperature range 80-750 K. Two blurred anomalies on the C-p(T) dependence are observed in wide temperature intervals of 200- 400 K and 500-700 K. The results of studies are discussed together with data on the structure and phonon spectrum in the framework of spherical random bond-random field model. (C) 2003 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
CNRS, CEMES, F-31055 Toulouse, France
ИФ СО РАН
L. V. Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
CEMES-CNRS, 31055 Toulouse, France

Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Sciau, P.
}
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16.

Heat capacity study of relaxors BaTi0.65Zr0.35O3 and BaTi0.60Zr0.40O3 / M. . Gorev [et al.] // J. Phys.: Condens. Matter. - 2006. - Vol. 18, Is. 17. - P. 4407-4416, DOI 10.1088/0953-8984/18/17/026. - Cited References: 21 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
CERAMICS
BA(TI1-XZRX)O-3
BATIO3
Кл.слова (ненормированные):
Calorimetry -- Composition -- Data reduction -- Lead compounds -- Mathematical models -- Permittivity -- Specific heat -- Adiabatic calorimetry -- Burns temperature -- Diffuse anomalies -- Barium compounds
Аннотация: The heat capacity of two relaxors BaTi(1-x)ZrxO(3) (x = 0.35, 0.40) was measured using adiabatic calorimetry in the temperature range 100-360 K. The Cp(T) dependence of both compositions is characterized by the presence of two diffuse anomalies near the Burns temperature T-d and the temperature of the maximum in permittivity T-m in the temperature ranges 250-350 K and 120 200 K. The anomalous heat capacity near T-d was analysed taking into account the distribution of Zr concentration in nanoregions leading to the distribution of their transition temperatures into the polar phase. Excess heat capacity near Tm was discussed in the framework of the spherical random bond-random field model. The results are compared with the data obtained by the same procedures for PbMg1/3Nb2/3O3 studied experimentally earlier.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
CNRS, CEMES, F-31055 Toulouse, France
ИФ СО РАН
L V Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
CEMES-CNRS, 31055 Toulouse, France

Доп.точки доступа:
Gorev, M.; Bondarev, V.; Sciau, P.; Savariault, J. M.
}
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17.

    Incorporating rare-earth terbium(III) Ions into Cs2AgInCl6:Bi nanocrystals toward tunable photoluminescence / Y. Liu, X. M. Rong, M. Z. Li [et al.] // Angew. Chem. - Int. Edit. - 2020. - Vol. 59, Is. 28. - P. 11634-11640, DOI 10.1002/anie.202004562. - Cited References: 43. - This work is supported by the National Natural Science Foundation of China (51961145101, 51972118 and 51722202), Fundamental Research Funds for the Central Universities (FRFTP-18-002C1), Guangdong Provincial Science & Technology Project (2018A050506004) and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137). This work is also funded by RFBR according to the research project No. 19-52-80003. . - ISSN 1433-7851. - ISSN 1521-3773
   Перевод заглавия: Включение редкоземельного тербия (III) в нанокристаллы Cs2AgInCl6: Bi для перестраиваемой фотолюминесценции

РУБ Chemistry, Multidisciplinary
Рубрики:
HALIDE DOUBLE PEROVSKITE
   LEAD-FREE
   LANTHANIDE
   STABILITY
   EMISSION
Кл.слова (ненормированные):
doping -- energy transfer -- perovskite nanocrystals -- photoluminescence -- terbium
Аннотация: The incorporation of impurity ions or doping is a promising method for controlling the electronic and optical properties and the structural stability of halide perovskite nanocrystals (NCs). Herein, we establish relationships between rare‐earth ions doping and intrinsic emission of lead‐free double perovskite Cs2AgInCl6 NCs to impart and tune the optical performances in the visible light region. Tb3+ ions were incorporated into Cs2AgInCl6 NCs and occupied In3+ sites as verified by both crystallographic analyses and first‐principles calculations. Trace amounts of Bi doping endowed the characteristic emission (5D4→7F6‐3) of Tb3+ ions with a new excitation peak at 368 nm rather than the single characteristic excitation at 290 nm of Tb3+. By controlling Tb3+ ions concentration, the emission colors of Bi‐doped Cs2Ag(In1−x Tbx )Cl6 NCs could be continuously tuned from green to orange, through the efficient energy‐transfer channel from self‐trapped excitons to Tb3+ ions. Our study provides the salient features of the material design of lead‐free perovskite NCs and to expand their luminescence applications.

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Держатели документа:
Univ Sci & Technol Beijing, Beijing Municipal Key Lab New Energy Mat & Techno, Sch Mat Sci & Engn, Beijing 100083, Peoples R China.
Shenzhen Univ, Shenzhen Key Lab Special Funct Mat, Shenzhen Engn Lab Adv Technol Ceram, Guangdong Res Ctr Interfacial Engn Funct Mat,Coll, Shenzhen 518060, Peoples R China.
Fed Res Ctr KSC SB RASs, Lab Crystal Phys, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Sch Mat Sci & Technol, Guangzhou 510641, Peoples R China.

Доп.точки доступа:
Liu, Ying; Rong, Ximing; Li, Mingze; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhao, Jing; Xia, Zhiguo
}
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18.

Incorporating rare-earth terbium(III) ions into Cs2AgInCl6:Bi nanocrystals toward tunable photoluminescence / Y. Liu, X. M. Rong, M. Z. Li [et al.] // Angew. Chem. - 2020. - Vol. 132, Is. 28. - P. 11731-11737, DOI 10.1002/ange.202004562. - Cited References: 43 . - ISSN 1521-3757

РУБ Chemistry, Multidisciplinary
Рубрики:
HALIDE DOUBLE PEROVSKITE
   LEAD-FREE
   LANTHANIDE
   STABILITY
   EMISSION
Кл.слова (ненормированные):
doping -- energy transfer -- perovskite nanocrystals -- photoluminescence -- terbium
Аннотация: The incorporation of impurity ions or doping is a promising method for controlling the electronic and optical properties and the structural stability of halide perovskite nanocrystals (NCs). Herein, we establish relationships between rare‐earth ions doping and intrinsic emission of lead‐free double perovskite Cs2AgInCl6 NCs to impart and tune the optical performances in the visible light region. Tb3+ ions were incorporated into Cs2AgInCl6 NCs and occupied In3+ sites as verified by both crystallographic analyses and first‐principles calculations. Trace amounts of Bi doping endowed the characteristic emission (5D4→7F6‐3) of Tb3+ ions with a new excitation peak at 368 nm rather than the single characteristic excitation at 290 nm of Tb3+. By controlling Tb3+ ions concentration, the emission colors of Bi‐doped Cs2Ag(In1−xTbx)Cl6 NCs could be continuously tuned from green to orange, through the efficient energy‐transfer channel from self‐trapped excitons to Tb3+ ions. Our study provides the salient features of the material design of lead‐free perovskite NCs and to expand their luminescence applications.

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Держатели документа:
Univ Sci, Sch Materials Sciences, Beijing Municipal Key Lab New Energy Materials, Technology Beijing,Technologies,Engn, Beijing, P. R. China.
Shenzhen Univ, Coll Materials Sci, Guangdong Res Ctr Interfacial Engn Functional Mat, Shenzhen Key Lab Special Functional Materials, Shenzhen, P. R. China.
Kirensky Inst Phys, Fed Res Ctr KSC SB RASs, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Engn Phys, Radioelectronics, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
S China Univ Technology, Sch Materials Sci, State Key Lab Luminescent Materials, Guangdong Prov Key Lab Fiber Laser Materials, Guangzhou, P. R. China.

Доп.точки доступа:
Liu, Ying; Rong, Ximing; Li, Mingze; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhao, Jing; Xia, Zhiguo
}
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19.

    Lead-Free Hybrid Metal Halides with a Green-Emissive [MnBr4] Unit as a Selective Turn-On Fluorescent Sensor for Acetone / M. Li [et al.] // Inorg. Chem. - 2019. - Vol. 58, Is. 19. - P. 13464-13470, DOI 10.1021/acs.inorgchem.9b02374. - Cited References: 38. - This work is supported by the National Natural Science Foundation of China (Nos. 51722202 and 51972118), Natural Science Foundations of Beijing (2172036), the Fundamental Research Funds for the Central Universities (FRF-TP-18-002C1), and the Guangdong Provincial Science & Technology Project (No. 2018A050506004). . - ISSN 0020-1669
   Перевод заглавия: Бессвинцовые гибридные металлогалогениды, с излучающим зеленый свет [MnBr4], в качестве селективного флуоресцентного датчика ацетона
Аннотация: Organic-inorganic hybrid metal halides with zero-dimensional (0D) structure has emerged as a new class of light-emitting materials. Herein, a new lead-free compound (C9NH20)2MnBr4 has been discovered and a temperature-dependent phase transition has been identified for two phases (space group P21/c and C2/c) in which individual [MnBr4]2- anions connect with organic cations, (C9NH20 +) (1-buty-1-methylpyrrolidinium+), forming periodic structure with 0D blocks. A green emission band, peaking at 528 nm with a high photoluminescence quantum efficiency (PLQE) of 81.08%, has been observed at room temperature, which is originated from the 4T1(G) to 6A1 transition of tetrahedrally coordinated Mn2+ ions, as also elaborated by density functional theory calculation. Accordingly, a fast, switchable, and highly selective fluorescent sensor platform for different organic solvents based on the luminescence of (C9NH20)2MnBr4 has been developed. We believe that the hybrid metal halides with high PLQE and the exploration of these as a fluorescence sensor will expand the applications scope of bulk 0D materials for future development.

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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, 100083, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
State Key Lab. of Luminescent Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China

Доп.точки доступа:
Li, M.; Zhou, J.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Jiang, X.; Lin, Z.; Zhao, J.; Xia, Z.
}
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20.

    Lead-Free Perovskite Derivative Cs2SnCl6−xBrx Single Crystals for Narrowband Photodetectors / J. Zhou [et al.] // Adv. Opt. Mater. - 2019. - Vol. 7, Is. 10. - Ст. 1900139, DOI 10.1002/adom.201900139. - Cited References: 26. - J.Z., J.J.L., X.M.R. contributed equally to this work. The present work was supported by the National Natural Science Foundation of China (Grants 51722202, 91622125, 51572023, and 11774239), Natural Science Foundations of Beijing (2172036), and National Key R&D Program of China (grant no. 2016YFB0700700). . - ISSN 2195-1071
   Перевод заглавия: Бессвинцовые монокристаллы производного перовскита Cs2SnCl6-xBrx для узкополосных фотоприемников
Кл.слова (ненормированные):
band structure -- Cs2SnBr6 -- Cs2SnCl6 -- lead-free perovskite derivatives -- narrowband photodetection
Аннотация: Lead-free and stable Sn halide perovskites demonstrate tremendous potential in the field of optoelectronic devices. Here, the structure and optical properties of the “defect” perovskites Cs2SnCl6−xBrx are reported, as well as their use as photodetector materials. Millimeter‐sized Cs2SnCl6−xBrx single crystals are grown by the hydrothermal method, with the body color continuously changing from transparent to yellow and finally to dark red. Narrowband single‐crystal photodetectors using Cs2SnCl6−xBrx crystals are presented, which show a high detectivity of ≈2.71 × 1010 Jones, with narrowband photodetection (full‐width at half‐maximum ≈45 nm) and high ion diffusion barriers. Moreover, the response spectra are continuously tuned from near violet to orange depending on the variation of the bandgap of the single crystals by changing the halide compositions. The strong surface charge recombination of the excess carriers near the crystal surfaces produced by short wavelength light elucidates the narrowband photodetection behavior. This work provides a new paradigm in the design of lead‐free, stable, and high‐performance perovskite derivatives for optoelectronics applications.

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Держатели документа:
The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
Shenzhen Key Laboratory of Flexible Memory Materials and Devices, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Department of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China

Доп.точки доступа:
Zhou, J.; Luo, J.; Rong, X.; Wei, P.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Huang, Y.; Zhao, J.; Liu, Q.; Zhang, X.; Tang, J.; Xia, Z.
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