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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bogdanov E. V., Vasil'ev A. D., Flerov I. N., Laptash N. M.
Заглавие : Effect of cation substitution in fluorine-oxygen molybdates (NH4)(2-x) A (x) MoO2F4
Разночтения заглавия :авие SCOPUS: Effect of cation substitution in fluorine-oxygen molybdates (NH4)2 - xAxMoO2F4
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 53, Is. 2. - P303-308. - ISSN 1063-7834, DOI 10.1134/S1063783411020065
Примечания : Cited References: 11. - This study was supported by the Russian Foundation for Basic Research (project no. 09-02-00062) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (project no. NSh-1011.2008.2).
Предметные рубрики: PHASE-TRANSITIONS
CRYSTALS
(NH4)(2)WO2F4
DIFFRACTION
OXYFLUORIDE
MECHANISM
DISORDER
Аннотация: Thermophysical and structural studies of (NH4)(2 - x) A (x) MoO2F4 (A = Cs, Rb, K) solid solutions of oxyfluorides have been performed. The character of the influence of cation substitutions on the stability of the initial phase (space group Cmcm) and on the mechanism of phase transitions has been elucidated.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Cheng F., Xia, Zhiguo, Molokeev M. S., Jing X.
Заглавие : Effects of composition modulation on the luminescence properties of Eu3+ doped Li1-xAgxLu(MoO4)2 solid-solution phosphors
Место публикации : Dalton Trans.: Royal Society of Chemistry, 2015. - Vol. 44, Is. 41. - P.18078-18089. - ISSN 1477-9226, DOI 10.1039/c5dt02760h
Примечания : Cited References: 42. - The present work was supported by the National Natural Science Foundations of China (Grant No. 51272242, 51572023, 51511130035), Natural Science Foundations of Beijing (2132050), the Program for New Century Excellent Talents in University of Ministry of Education of China (NCET-12-0950), Beijing Nova Program (Z131103000413047), Beijing Youth Excellent Talent Program (YETP0635), the Funds of the State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (RERU2015022), and the excellent tutor section of the Fundamental Research Funds for the Central Universities of China University of Geosciences, Beijing (2-9-2015-028). This work was also partly supported by the Russian Foundation for Basic Research (Grant No. 15-52-53080 GFEN_a).
Предметные рубрики: RED PHOSPHORS
PHOTOLUMINESCENCE PROPERTIES
ENERGY-TRANSFER
WHITE LEDS
IONS
NA
POLYMORPHISM
TUNGSTATES
RELAXATION
MOLYBDATES
Аннотация: Double molybdate scheelite-type solid-solution phosphors Li1−xAgxLu1−y(MoO4)2:yEu3+ were synthesized by the solid state reaction method, and their crystal structures and luminescence properties were investigated in detail. The composition modulation and structural evolution of this series of samples were studied and the selected AgEu(MoO4)2, AgLu(MoO4)2, LiLu(MoO4)2 and LiEu(MoO4)2 phases were analyzed based on the Rietveld refinement. Depending on the variation of the Li/Ag ratio in Li1−xAgxLu1−y(MoO4)2:yEu3+ phosphors, the difference in the luminescence properties of Li1−xAgxLu1−y(MoO4)2:yEu3+ phosphors was ascribed to two factors, one reason could be assigned to the coupling effect and the nonradiative transition between the energy levels of LixAg1−xLu(MoO4)2 matrices and the activator Eu3+, another could be due to the near ultraviolet energy absorption and transmission efficiency between the charge-transfer (CT) band of O2−–Mo6+ and the 4f → 4f emissive transitions of Eu3+. The ultraviolet-visible diffuse reflection spectra (UV-vis DRS) and Raman spectra analysis were also used to verify the above mechanism.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Atuchin V. V., Aleksandrovsky A. S., Chimitova O. D., Diao C. P., Gavrilova T. A., Kesler V. G., Molokeev M. S., Krylov A. S., Bazarov B. G., Bazarova J. G., Lin Z. S.
Заглавие : Electronic structure of β-RbSm(MoO4)2 and chemical bonding in molybdates
Коллективы : Ministry of Education and Science of the Russian Federation; National Natural Science Foundation of China [11174297, 11474292]; National Basic Research Project of China [2011CB922204]; Foundation of the Director of Technical Institute of Physics and Chemistry, CAS; RAS [24-29]; RFBR [13-02-00825]
Разночтения заглавия :. в WoS: Electronic structure of beta-RbSm(MoO4)2 and chemical bonding in molybdates
Место публикации : Dalton Trans.: Royal Society of Chemistry, 2015. - Vol. 44, Is. 4. - P.1805-1815. - ISSN 1477-9226, DOI 10.1039/c4dt03203a. - ISSN 1477-9234
Примечания : Cited References: 121. - VVA and ASA gratefully acknowledge the Ministry of Education and Science of the Russian Federation for financial support. ZL acknowledges the support by National Natural Science Foundation of China (11174297 and 11474292), the National Basic Research Project of China (2011CB922204), and Foundation of the Director of Technical Institute of Physics and Chemistry, CAS. The work was partially supported by RAS Project 24-29 and RFBR Grant 13-02-00825.
Предметные рубрики: RAY PHOTOELECTRON-SPECTROSCOPY
CRYSTAL-STRUCTURE
X-RAY
NEUTRON-DIFFRACTION
MAGNETIC-PROPERTIES
PHASE-FORMATION
CORE LEVELS
2ND-HARMONIC GENERATION
LUMINESCENCE PROPERTIES
VIBRATIONAL PROPERTIES
Аннотация: Microcrystals of orthorhombic rubidium samarium molybdate, beta-RbSm(MoO4)(2), have been fabricated by solid state synthesis at T = 450 degrees C, 70 h, and at T = 600 degrees C, 150 h. The crystal structure has been refined by the Rietveld method in space group Pbcn with cell parameters a = 5.0984(2), b = 18.9742(6) and c = 8.0449(3) angstrom (R-B = 1.72%). Thermal properties of beta-RbSm(MoO4)(2) were traced by DSC over the temperature range of T = 20-965 degrees C, and the earlier reported β ↔ α phase transition at T similar to 860-910 degrees C was not verified. The electronic structure of beta-RbSm(MoO4) 2 was studied by employing theoretical calculations and X-ray photoelectron spectroscopy. It has been established that the O 2p-like states contribute mainly to the upper part of the valence band and occupy the valence band maximum, whereas the Mo 4d-like states contribute mainly to the lower part of the valence band. Chemical bonding effects have been analysed from the element core level binding energy data. In addition, it was found that the luminescence spectrum of beta-RbSm(MoO4)(2) is rather peculiar among the Sm3+ containing materials. The optical refractive index dispersion in beta-RbSm(MoO4)(2) was also predicted by the first-principles calculations.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Chimitova O. D., Atuchin V. V., Bazarov B. G., Molokeev M. S., Bazarova Zh.G.
Заглавие : Formation, structural parametres of double molybdates RbLn(MoO4)2
Коллективы : "Функциональные и конструкционные материалы", международная научно-техническая конференция, посвященная 95-летию НАН Украины (3; 2013 ; нояб. ; 11-14; Донецк, Украина)
Место публикации : 3 Междунар. науч.-технич. конф. "Функциональные и конструкционные матер.": Тезисы докладов. - 2013. - P.52
Примечания : This study was partially supported by SB RAS (Grant 28.13), Grant RFBR № 11-08-00681-а
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grossman V. G., Molokeev M. S., Bazarova J. G., Bazarov B. G.
Заглавие : High ionic conductivity of K5-xTlx(Mg0.5Hf1.5)(MoO4)6 (0 ≤ х ≤ 5) solid solutions
Место публикации : Solid State Sci. - 2022. - Vol. 134. - Ст.107027. - ISSN 12932558 (ISSN), DOI 10.1016/j.solidstatesciences.2022.107027
Примечания : Cited References: 39. - The work was supported by Basic Project of BINM SB RAS №0273-2021-0008. Structural analysis of materials in this study was partly supported by the Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation . X-ray powder diffraction and thermal analysis were obtained using the equipment of the Collective Use Center BINM SB RAS
Аннотация: Novel K5-xTlx(Mg0.5Hf1.5)(MoO4)6 (0 ≤ х ≤ 5) oxides were successfully synthesized by solid state reaction. The results indicate the formation of a continuous series of solid solutions with the NASICON-like structure (sp. gr. R3¯c) in the composition range 0 x 5. The unit-cell parameters of the solid solutions increase linearly with composition, as a consequence of thallium substitution for potassium. The cation conductivity of Tl5Mg0.5Hf1.5(MoO4)6 has been shown to exceed the conductivity of the parent potassium magnesium hafnium molybdate. The highest total conductivity of 2.49 × 10−3 S/cm was found at 831 K for Tl5Mg0.5Hf1.5(MoO4)6.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grossman V. G., Bazarova J. G., Molokeev M. S., Bazarov B. G.
Заглавие : New triple molybdate K5ScHf(MoO4)6: Synthesis, properties, structure and phase equilibria in the M2MoO4–Sc2(MoO4)3–Hf(MoO4)2 (M = Li, K) systems
Место публикации : J. Solid State Chem. - 2020. - Vol. 283. - Ст.121143. - ISSN 00224596 (ISSN), DOI 10.1016/j.jssc.2019.121143
Примечания : Cited References: 53. - This study was carried out within the state assignment of FASO of Russia (Theme No 0339-2016-0007) as well was supported by RFBR Grants 18-08-00799 and 18-03-00557
Аннотация: Subsolidus phase relations in the M2MoO4–Sc2(MoO4)3–Hf(MoO4)2 (M = Li, K) systems have been studied by the method of “intersecting cuts”. No new triple molybdates have been identified in the Li2MoO4–Sc2(MoO4)3–Hf(MoO4)2 system and a new triple molybdate K5ScHf(MoO4)6 is formed in the K2MoO4–Sc2(MoO4)3–Hf(MoO4)2 system. The structure of K5ScHf(MoO4)6, have been determined in space group Rc through Rietveld analysis of X-ray powder diffraction data. The melting point of molybdate is 999 K. The compound has high ion conductivity (about 10−3 S cm−1).
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Temerov V. L., Sokolov A. Е., Sukhachev A. L., Bovina A. F., Edel'man I. S., Malakhovskii A. V.
Заглавие : Optical Properties of Trigonal Single Crystals (Yb,Tm)Al3(BO3)4 Grown from Fluxes Based on the Bismuth and Lithium Molybdates
Место публикации : Crystallography report. - 2008. - Vol. 53, No. 7. - P.1157-1162. - DOI 10.1134/S1063774508070110
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grossman V. G., Molokeev M. S., Bazarov B. G., Bazarova J. G.
Заглавие : Potassium and thallium conductors with a trigonal structure in the M2MoO4–Cr2(MoO4)3–Hf(MoO4)2 (M = K, Tl) systems: Synthesis, structure, and ionic conductivity
Место публикации : J. Alloys Compd. - 2021. - Vol. 873. - Ст.159828. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2021.159828
Примечания : Cited References: 62. - The work was supported by Basic Project of BINM SB RAS № 0273-2021-0008 . Research was conducted using equipment of the CCU BINM SB RAS (Ulan-Ude, Russia). Structural analysis of materials in this study was partly supported by the Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation
Аннотация: The triple molybdates M5CrHf(MoO4)6 (M = K, Tl) and TlCrHf0.5(MoO4)3 were found upon studying the corresponding ternary molybdate systems M2MoO4–Cr2(MoO4)3–Hf(MoO4)2 (M = K, Tl) in the subsolidus region using X-ray powder diffraction. The crystal structures of M5CrHf(MoO4)6 (M = K, Tl) and TlCrHf0.5(MoO4)3 are refined by Rietveld method. M5CrHf(MoO4)6 (M = K, Tl) crystallizes in space group Rc with unit cell parameters: a = b = 10.45548 (5), c = 37.24614 (3) Å, V = 3526.14 (4) Å3, Z = 6 for K5CrHf(MoO4)6 and a = b = 10.53406 (12), c = 37.6837 (5) Å, V = 3621.39 (9) Å3, Z = 6 for Tl5CrHf(MoO4)6. TlCrHf0.5(MoO4)3 crystallizes in space group R with unit cell parameters: a = b = 12.9710 (2), c = 11.7825 (2) Å, V = 1716.78 (6) Å3, Z = 6. The thermal stability and electrical conductivity of the new compounds were investigated. Electrical conductivity measurements gave high values for the triple molybdates M5CrHf(MoO4)6 (M = K, Tl) (σ = 5.22 × 10−4 S / cm for K5CrHf(MoO4)6, σ = 1.1 × 10−2 S / cm for Tl5CrHf(MoO4)6 at 773 K) and relatively low values for the triple molybdate TlCrHf0.5(MoO4)3 (σ = 4.42 × 10−6 S / cm at 773 K).
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Atuchin V. V., Chimitova O. D., Bazarov B. G., Molokeev M. S., Bazarova Zh.G.
Заглавие : Structural parameters of double molybdates ALn(MoO4)2
Коллективы : Институт нанотехнологий микроэлектроники РАН, Ульяновский государственный университет, Российский фонд фундаментальных исследований, Академия наук Татарстана, "Opto-, nanoelectronics, nanotechnology, and microsystems", International Conference (2013 ; Jul. ; 26-30; Ulyanovsk, Russia), "Опто-, наноэлектроника, нанотехнологии и микросистемы", международная конференция (2013 ; июль.; 26-30; Ульяновск)
Место публикации : XVI Международная конференция "Опто-, наноэлектроника, нанотехнологии и микросистемы": Труды. - Ульяновск, 2013. - P.239-240
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grossman, Victoria G., Molokeev M. S., Bazarova, Jibzema G., Bazarov, Bair G., Sorokin, Nikolay, I
Заглавие : Structural, thermal and electrical studies of thallium-scandium-hafnium(zirconium) molybdates
Коллективы : Basic Project of BINM SB RAS [0273-2021-0008]; Government of the Russian Federation [075-15-2019-1886]
Место публикации : J. Solid State Chem. - 2022. - Vol. 307. - Ст.122832. - ISSN 0022-4596, DOI 10.1016/j.jssc.2021.122832. - ISSN 1095-726X(eISSN)
Примечания : Cited References: 56. - The work was supported by Basic Project of BINM SB RAS N degrees 0273-2021-0008. Research was conducted using equipment of the CCU BINM SB RAS. Structural analysis of materials in this study was partly sup-ported by the Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation
Предметные рубрики: POSITIVE ELECTRODE MATERIAL
CRYSTAL-STRUCTURE
IONIC-CONDUCTIVITY
Аннотация: Thallium scandium hafnium molybdate Tl5ScHf(MoO4)6 and thallium scandium zirconium molybdate Tl5ScZr(MoO4)6 crystallize in trigonal symmetry with the space group . The compounds are synthesized by sintering the finely powdered simple molybdates mixture in a muffle furnace at 723–823 K for 100 h. The crystal structures of Tl5ScHf(MoO4)6 and Tl5ScZr(MoO4)6 are obtained by Rietveld method. The following unit cell parameters are calculated for Tl5ScHf(MoO4)6: a = 10.62338 (5), c = 38.0579 (2) Å, V = 3719.64 (4) Å3, Z = 6 and for Tl5ScZr(MoO4)6: a = 10.63216 (7), c = 38.0716 (3) Å, V = 3727.14 (5) Å3, Z = 6. The conductivity of the Tl5ScHf(MoO4)6 and Tl5ScZr(MoO4)6 are measured between 293 and 860 K. The ionic conductivity of Tl5ScHf(MoO4)6 and Tl5ScZr(MoO4)6 molybdates are 8 × 10−4 S/cm and 8 × 10−3 S/cm (at 773 K); the activation energy of ionic transfer are 0.8 eV and 0.3 eV respectively.
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