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    A novel single-phase white light emitting phosphor Ca9La(PO4)5(SiO4)F2:Dy3+: Synthesis, crystal structure and luminescence properties / H. Liu [et al.] // RSC Adv. - 2016. - Vol. 6, Is. 29. - P. 24577-24583, DOI 10.1039/c5ra23348h. - Cited References: 33. - We gratefully acknowledge the financial support by the National Natural Science Foundations of China (Grant no. 41172053), the Fundamental Research Funds for the Central Universities (Grant no. 2652013043), and Science and Technology Innovation Fund of the China University of Geosciences (Beijing). . - ISSN 2046-2069
   Перевод заглавия: Новый однофазный люминофор Ca9La(PO4)5(SiO4)F2:Dy3+, излучающий белый свет: синтез, кристаллическая структура и люминесцентные свойства

РУБ Chemistry, Multidisciplinary
Рубрики:
Energy-transfer
   Diodes
   LEDs
   Emission
   Ions
   Excitation
   Ce3+
   Eu2+
   Ln
Аннотация: A novel single-phase white light emitting phosphor Ca9La(PO4)5(SiO4)F2:Dy3+ was prepared through traditional high-temperature solid state technology. The crystal structures of Ca9La(PO4)5(SiO4)F2 with or without Dy3+ ions were refined by the Rietveld method. The diffuse reflection spectra, excitation spectra, emission spectra, and decay times were characterized to investigate the photoluminescence properties for application in white light-emitting diodes. The results showed that the Ca9La(PO4)5(SiO4)F2:Dy3+ phosphor could efficiently assimilate n-UV light and emit blue (∼485 nm) and yellow light (∼580 nm), originating from the f-f transitions of Dy3+. The critical Dy3+ quenching concentration (QC) was determined to be about 15 mol%, and the corresponding QC mechanism was verified to be the dipole-dipole interaction. Additionally, the emission colors of all samples were located close to the ideal white light region, and the optimal chromaticity coordinates and correlated color temperature (CCT) were determined to be (x = 0.338, y = 0.336) and 5262 K. All the above results indicate that the as-prepared Ca9La(PO4)5(SiO4)F2:Dy3+ phosphor could serve as a promising candidate for white-light n-UV-LEDs. © The Royal Society of Chemistry 2016.

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Держатели документа:
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, China
Laboratory of Crystal Physics, Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation

Доп.точки доступа:
Liu, H.; Liao, L.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Guo, Q.; Zhang, Y.; Mei, L.
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Analysis of the exchange magnetic structure in Pb3Mn7O15 / E. V. Eremin [et al.] // J. Exp. Theor. Phys. - 2017. - Vol. 124, Is. 5. - P. 792-804, DOI 10.1134/S1063776117040112. - Cited References: 16 . - ISSN 1063-7761
Кл.слова (ненормированные):
Crystallography -- Magnetic properties -- Magnetic structure -- Magnetism -- Manganese -- Indirect couplings -- Manganese ions -- Structural and magnetic properties -- Single crystals
Аннотация: The indirect-coupling model is used to analyze the exchange magnetic structure of Pb3Mn7O15 in the hexagonal setting. The ratios of manganese ions Mn4+/Mn3+ in each nonequivalent position are determined. Pb3(Mn0.95Ge0.05)7O15 and Pb3(Mn0.95Ga0.05)7O15 single crystals are grown by the solution–melt method in order to test the validity of the proposed model. The structural and magnetic properties of the single crystals are studied. The magnetic properties of the grown single crystals are compared with those of nominally pure Pb3Mn7O15. © 2017, Pleiades Publishing, Inc.

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Публикация на русском языке Анализ обменной магнитной структуры Pb3Mn7O15 [Текст] / Е. В. Еремин [и др.] // Журн. эксперим. и теор. физ. : Наука, 2017. - Т. 151 Вып. 5. - С. 930-943

Держатели документа:
Kirensky Institute of Physics, 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, pr. Akademika Lavrent’eva 3, Novosibirsk, Russian Federation
Novosibirsk State University, ul. Pirogova 2, Novosibirsk, Russian Federation

Доп.точки доступа:
Eremin, E. V.; Еремин, Евгений Владимирович; Volkov, N. V.; Волков, Никита Валентинович; Sablina, K. A.; Саблина, Клара Александровна; Bayukov, O. A.; Баюков, Олег Артемьевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Komarov, V. Y.
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Anomalous in-plane electronic scattering in charge ordered Na 0.41CoO 2•0.6H 2O / G. X. Cao [et al.] // Phys. Rev. Lett. - 2012. - Vol. 108, Is. 23. - Ст. 236401, DOI 10.1103/PhysRevLett.108.236401. - Cited References: 41. - We thank H. Habermeier, D. Mandrus, B. C. Sales, I. Eremin, I. I. Mazin, and P. J. Hirschfeld for useful discussions. G. Cao acknowledges support from NSFC (No. 10804068, 10774097). M. M. K. acknowledges support from RFBR (Grant No. 09-02-00127), Presisium of RAS program "Quantum physics of condensed matter" N5.7, Integration Grant of SBRAS-UrBRAS N40, and Russian FCP (GK 16.740.12.0731), and The Dynasty Foundation and ICFPM. Work at ORNL was supported by the Department of Energy, BES, Materials Science and Engineering Division. . - ISSN 0031-9007

РУБ Physics, Multidisciplinary
Рубрики:
SUPERCONDUCTIVITY
   TRIPLET
   FLUCTUATIONS
   IONS
Аннотация: We report electronic transport measurements on high quality floating zone grown NaxCoO2 and Na0.41CoO2·0.6H2O single crystals. We find an in-plane electronic scattering minimum near 11 K and a clear charge ordering at approximately 50 K. The electronic and magnetic properties in hydrated and nonhydrated Na0.41CoO2 samples are similar at higher temperature, but evolve in markedly different ways below ∼50 K, where a strong ferromagnetic tendency is observed in the hydrated sample. Model calculations show the relationship of this tendency to the structure of the Fermi surface. The results, particularly the clear differences between the hydrated and nonhydrated material show a substantially enhanced ferromagnetic tendency upon hydration. Implications for superconductivity are discussed.

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Держатели документа:
[Cao, Guixin
Gao, Yuze
Le Tacon, Mathieu
Lin, Chengtian] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany
[Cao, Guixin] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[Cao, Guixin] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
[Korshunov, Maxim M.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA
[Korshunov, Maxim M.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Korshunov, Maxim M.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Singh, David J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

Доп.точки доступа:
Cao, G. X.; Korshunov, M. M.; Коршунов, Максим Михайлович; Gao, Y. Z.; Le Tacon, M.; Singh, D. J.; Lin, C. T.
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Antiferromagnetic Resonance and Dielectric Properties of Rare-earth Ferroborates in the Submillimeter Frequency Range / A. M. Kuz'menko [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 1. - P. 113-120, DOI 10.1134/S106377611105013X. - Cited References: 27. - This work was supported by the Russian Foundation for Basic Research, project no. 10-02-00846. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
GDFE3(BO3)(4)
SPECTROSCOPY
CRYSTAL
Кл.слова (ненормированные):
Antiferromagnetic resonance -- Basic parameters -- Effective anisotropy constant -- Ferroborates -- Ferroics -- Ferromagnetic orderings -- Frequency ranges -- Magnetic interactions -- Magnetoresonance -- Millimeter frequency range -- Rare earth ions -- Submillimeters -- Antiferromagnetic materials -- Crystallography -- Erbium -- Europium -- Ferromagnetic resonance -- Ion exchange -- Magnetic anisotropy -- Magnetic devices -- Magnetic structure -- Permittivity -- Resonance -- Antiferromagnetism
Аннотация: The magnetoresonance and dielectric properties of a number of crystals of a new family of multiferroics, namely, rare-earth ferroborates RFe(3)(BO(3))(4) (R = Y, Eu, Pr, Tb, Tb(0.25)Er(0.75)), are studied in the submillimeter frequency range (nu = 3-20 cm(-1)). Ferroborates with R = Y, Tb, and Eu exhibit permittivity jumps at temperatures of 375, 198, and 58 K, respectively, which are caused by the R32 -> P3(1)2(1) phase transition. Antiferromagnetic resonance (AFMR) modes in the subsystem of Fe(3+) ions are detected in the range of antiferromagnetic ordering (T < T(N) = 30-40 K) in all ferroborates that have either an easy-plane (Y, Eu) or easy-axis (Pr, Tb, Tb(0.25)Er(0.75)) magnetic structure. The AFMR frequencies are found to depend strongly on the magnetic anisotropy of a rare-earth ion and its exchange interaction with the Fe subsystem, which determine the type of magnetic structure and the sign and magnitude of an effective anisotropy constant. The basic parameters of the magnetic interactions in these ferroborates are found, and the magnetoelectric contribution to AFMR is analyzed.

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Держатели документа:
[Kuz'menko, A. M.
Mukhin, A. A.
Ivanov, V. Yu.
Lebedev, S. P.] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
[Kadomtseva, A. M.] Moscow MV Lomonosov State Univ, Moscow 119991, Russia
[Bezmaternykh, L. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation
Moscow State University, Moscow, 119991, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kuz'menko, A. M.; Mukhin, A. A.; Ivanov, V. Y.; Kadomtseva, A. M.; Lebedev, S. P.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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Aplesnin, S. S.
Regulation of the thermopower and ultrasound by magnetic field in manganese sulfide doped with variable-valence ions / S. Aplesnin, A. Kharkov, M. Sitnikov // Eur. Phys. J. Plus. - 2024. - Vol. 139, Is. 3. - Ст. 247, DOI 10.1140/epjp/s13360-024-05032-2. - Cited References: 50. - The study was supported by a grant from the Russian Science Foundation N 23-22-10016, the Krasnoyarsk Regional Science Foundation. The investigation of microstructural properties of the samples was carried out using equipment’s (SEM and TEM) the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS». The authors are grateful to A.V. Shabanov for the scanning electron microscopy investigations . - ISSN 2190-5444
Аннотация: The effect of cation nonstoichiometry and variable-valence samarium ions on the thermoelectric and structural characteristics of manganese sulfide is studed. Nonstoichiometry leads to a change in the thermopower sign in the antiferromagnetic region in a magnetic field and a decrease in the thermopower in the paramagnetic region. It is shown that the thermopower and Nernst–Ettingshausen coefficient of samarium-substituted manganese sulfide change their signs in the vicinity of structural and electronic transitions established from the thermal expansion coefficient. A decrease in the sound attenuation in a magnetic field is found. A correlation between the temperatures of the change of the sign of the Nernst–Ettingshausen effect and the change in electrosound in a magnetic field is established and explained within the model of carrier diffusion in the phase transition region. The conductivity control by the ultrasound is demonstrated.

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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russia

Доп.точки доступа:
Kharkov, A.; Sitnikov, M.; Аплеснин, Сергей Степанович
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    Arrangement of Rh3+ ions in fac-triamminetrichloridorhodium from powder data and in fac-triamminetrinitratorhodium crystals twinned by merohedry / A. D. Vasiliev [et al.] // Acta Crystallogr. C. - 2013. - Vol. 69, Pt. 12. - P. 1462–1466 ; Spec. is. Interplay of crystallogr., spectrosc. and theor. meth. for solving chem. prob., DOI 10.1107/S010827011303076X . - ISSN 0108-2701
   Перевод заглавия: Расположение ионов Rh3+ в гран-триамминтрихлоридродии из порошковых данных и в мероэдрически двойникованном кристалле гран-триамминтринитрародия
Кл.слова (ненормированные):
crystal structure -- powder diffraction -- merohedral twinning -- fac-triamminetrichloridorhodium -- low solubility -- fac-triamminetrinitratorhodium
Аннотация: The rhodium complexes [RhCl3(NH3)3], (I), and [Rh(NO3)3(NH3)3], (II), are built from octahedral RhX3(NH3)3 units; in (I) they are isolated units, while in (II) the units are stacked in columns with partially filled sites for the Rh atoms. The octahedra of monoclinic crystals of (I) are linked by N-H...Cl hydrogen bonds and the Rh3+ ions are located on the mirror planes. In the trigonal crystals of (II), the discontinuous `columns` along the threefold axis are linked by N-H...O hydrogen bonds. The structure of (I) has been solved using laboratory powder diffraction data, the structure of (II) has been solved by single-crystal methods using data from a merohedrally twinned sample. Both compounds possess low solubility in water.

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Держатели документа:
Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Nikolaev Inst Inorgan Chem SB RAS, Novosibirsk 630090, Russia

Доп.точки доступа:
Vasiliev, A. D.; Васильев, Александр Дмитриевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Baidina, I. A.; Belyaev, A. V.; Vorob`eva, S. N.

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Avramov, P. V.
Atomic-core dynamics and the electronic structure of some endo- and exohedral complexes of fullerenes with light elements / P. V. Avramov, S. A. Varganov, S. G. Ovchinnikov // Phys. Solid State. - 2000. - Vol. 42, Is. 11. - P. 2168-2175, DOI 10.1134/1.1324059. - Cited References: 39 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
M-AT-C-60 ENDOHEDRAL COMPLEXES
   MOLECULAR-DYNAMICS
   PHASE-TRANSITION
   AB-INITIO
   SOLID C60
   C-60
   IONS
Аннотация: The atomic and electronic structure of some endo-, exo-, and endo-exohedral complexes of the fullerene C-60 with various guest atoms and molecules (He-n, H-2, and Li-2) are investigated using semiempirical and nonempirical quantum-chemical methods. The atomic core dynamics is studied by the method of molecular dynamics. It is shown that guest atoms and molecules in fullerene polyhedra acquire an orbital angular momentum due to the correlated motion of nuclei above the low-energy barriers of the potential surface within the carbon polyhedron even at low temperatures (from 4 to 78 K). The emergence of orbital angular momenta of nuclei of guest atoms and molecules is attributed to a change in the contribution of the orbital angular momentum of electrons to the potential surface of the complexes. The motion of Li ions in a polyhedron leads to blurring of the top of the valence band and to the emergence of a charge polarization wave in the carbon polyhedron. (C) 2000 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, Kirenskii Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660062, Russia
ИФ СО РАН

Доп.точки доступа:
Varganov, S. A.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Аврамов, Павел Вениаминович
}
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BAYUKOV, O. A.
PREDICTION OF MAGNETIC-PROPERTIES OF DIELECTRICS IS POSSIBLE / O. A. BAYUKOV, A. F. SAVITSKII // Fiz. Tverd. Tela. - 1994. - Vol. 36, Is. 7. - P. 1923-1938. - Cited References: 54 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
EXCHANGE INTERACTIONS
METAL-IONS

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Доп.точки доступа:
SAVITSKII, A. F.
}
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BAYUKOV, O. A.
SINGLE-ION-ANISOTROPY INDUCED BY EXCHANGE-TYPE COVALENCE EFFECTS IN RHOMBOHEDRAL ANTIFERROMAGNETICS WITH S-IONS / O. A. BAYUKOV, V. V. RUDENKO // Fiz. Tverd. Tela. - 1992. - Vol. 34, Is. 8. - P. 2665-2667. - Cited References: 15 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
RESONANCE

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Доп.точки доступа:
RUDENKO, V. V.
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10.

    Blue-shift of Eu2+ emission in (Ba,Sr)3Lu(PO4)3:Eu2+ eulytite solid-solution phosphors resulting from release of neighbouring-cation-induced stress / Z. Y. Wang [et al.] // Dalton Trans. - 2014. - Vol. 43, Is. 44. - P. 16800-16804, DOI 10.1039/c4dt02319f. - Cited References: 16. - The present work was supported by the National Natural Science Foundations of China (grant no. 51002146, no. 51272242), Natural Science Foundations of Beijing (2132050), the Program for New Century Excellent Talents in the University of the Ministry of Education of China (NCET-12-0950), Beijing Nova Program (Z131103000413047), Beijing Youth Excellent Talent Program (YETP0635) and the Funds of the State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University (KF201306). V.V.A. is partly supported by the Ministry of Education and Science of the Russian Federation. . - ISSN 1477-9226. - ISSN 1477-9234
   Перевод заглавия: Синее смещение излучения Eu2+ в твердых растворах (Ba,Sr)3Lu(PO4)3:Eu2 со структурой эулита, вызванное снятием напряжения, индуцированного соседними катионами

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
TUNABLE COLOR TONE
   EXCITED WHITE LEDS
   CRYSTAL-STRUCTURE
   TEMPERATURE
   IONS
Аннотация: A series of iso-structural eulytite-type (Ba,Sr)(3)Lu(PO4)(3):Eu2+ solid-solution phosphors with different Sr/Ba ratios were synthesized by a solid-state reaction. Crystal structures of (Ba,Sr)(3)Lu(PO4)(3):Eu2+ were resolved by the Rietveld method, which shows an eulytite-type cubic Bi-4(SiO4)(3) structure with cations disordered in a single C-3 site while the oxygen atoms were distributed over two partially occupied sites. The emission peaks of Ba(3-x)SrxLu(PO4)(3):Eu2+ (0

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Держатели документа:
China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia
SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk 630090, Russia

Доп.точки доступа:
Wang, Z. Y.; Xia, Zhiguo; Molokeev, M. S.; Молокеев, Максим Сергеевич; Atuchin, V. V.; Атучин, Виктор Валерьевич; Liu, Q. L.
}
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