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Korshunov, A. V.
An investigation of the temperature dependence of the low frequency raman spectrum of a crystal of Ba(NO3)2 / A. V. Korshunov, V. P. Spiridonov, V. F. Shabanov // J. Appl. Spectrosc. - 1973. - Vol. 18, Is. 5. - P. 677–678, DOI 10.1007/BF00609342. - Cited References: 13 . - ISSN 0021-9037

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Публикация на русском языке Коршунов, Анатолий Васильевич. Исследование температурной зависимости спектра комбинационного рассеяния малых частот кристалла Ba(NO3)2 [Текст] / А. В. Коршунов, В. П. Спиридонов, В. Ф. Шабанов // Журнал прикладной спектроскопии. - 1973. - Т. 18 вып. 5. - С. 925-927

Держатели документа:
L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Spiridonov, V. P.; Спиридонов, Виталий Петрович; Shabanov, V. F.; Шабанов, Василий Филиппович; Коршунов, Анатолий Васильевич
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Angular dependence of the magnetoresistance in Y3/4Lu1/4Ba2Cu3O7-CuO composites at 77 K / D. A. Balaev [et al.] // Tech. Phys. Lett. - 2006. - Vol. 32, Is. 8. - P. 677-679, DOI 10.1134/S1063785006080128. - Cited References: 16 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
CERAMIC SUPERCONDUCTORS
   MAGNETIC-FIELD
   MICROSTRUCTURE
   BOUNDARIES
   TRANSPORT
   MOTION
   FILMS
Аннотация: The angular dependence of the magnetoresistance of polycrystalline Y3/4Lu1/4Ba2Cu3O7-CuO composites has been studied. These composites represent a system of Josephson junctions and exhibit a large magnetoresistance at 77 K. In addition to the isotropic component, there is the angle-dependent component proportional to sin(2)theta, where theta is the angle between the directions of current and magnetic field. This behavior is unambiguous evidence for the process of flux flow in the Josephson medium realized in the composites.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Prus, A. G.; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
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Balaev, D. A.
Anisotropy of the magnetoresistance hysteresis in the granular superconductor Y-Ba-Cu-O at different magnetic-field and transport-current orientations / D. A. Balaev, S. V. Semenov, M. A. Pochekutov // J. Appl. Phys. - 2017. - Vol. 122, Is. 12. - Ст. 123902, DOI 10.1063/1.4986253. - Cited References: 45. - This study was supported by the Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 16-48-243018. . - ISSN 0021-8979
Кл.слова (ненормированные):
Anisotropy -- High temperature superconductors -- Hysteresis -- Magnetic fields -- Magnetic flux -- Magnetism -- Magnetoresistance -- Different-magnetic fields -- External magnetic field -- Granular superconductors -- Macroscopic transport -- Magnetic flux compression -- Magneto transport properties -- Model representation -- Transport currents -- Superconducting materials
Аннотация: Dissipation in granular high-temperature superconductors (HTSs) during the passage of macroscopic transport current j is mainly determined by carrier tunneling through intergrain boundaries (Josephson junctions). In the presence of external magnetic field H, it is necessary to take into account the significant magnetic flux compression, which can lead to the situation when the effective field Beff in the intergrain boundaries exceeds the external field by an order of magnitude. This is observed as a wide hysteresis of the field dependence of magnetoresistance R(H). In this study, we investigate the R(H) hysteresis evolution in granular 1-2-3 HTSs in different j-H orientations. The magnetic flux compression significantly affects the magnetoresistance and its hysteresis for both perpendicular (H ⊥ j) and parallel (H ∥ j) orientations. The obtained experimental data on the R(H) hysteresis at the arbitrary angles θ = ∠H, j are explained using the approach developed for describing the magnetoresistance hysteresis in granular HTSs with regard to the magnetic flux compression and the model representations proposed by Daghero et al. [Phys. Rev. B 66(13), 11478 (2002)]. A concept of the effective field in the intergrain medium explains the well-known anisotropy of the magnetotransport properties of granular HTSs.

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

Доп.точки доступа:
Semenov, S. V.; Семёнов, Сергей Васильевич; Pochekutov, M. A.; Балаев, Дмитрий Александрович
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Martynov, S. N.
Antisymmetric Exchange in the CuB2O4 A Subsystem / S. N. Martynov // JETP Letters. - 2009. - Vol. 90, Is. 1. - P. 55-58, DOI 10.1134/S0021364009130116. - Cited References: 31 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
TRANSVERSE MAGNETIC-FIELD
   FLUCTUATION-INDUCED PHASE
   COPPER METABORATE
   ANTIFERROMAGNETIC CHAINS
   SOLITON LATTICE
   INDUCED GAP
   SPIN-WAVES
   BA2CUGE2O7
   CSCUCL3
   MNSI
Аннотация: The space distribution of the components of the microscopic Hamiltonian of the antisymmetric Dzyaloshinskii-Moriya exchange with respect to the exchange bond pairs of the A subsystem of Cu2+ ions in the crystallographic 4b positions of CuB2O4 has been obtained using symmetry analysis. The possibility of the coexistence of two different types of the exchange spatial distribution is demonstrated. The component of the anti-symmetric exchange vector D parallel to the tetragonal axis has a weakly ferromagnetic distribution for all of the directions of the bonds between the nearest magnetic neighbors. Each exchange bond has an additional component of the antisymmetric exchange parallel to the bond projection on the tetragonal plane. The spatial distribution of these components is helicoidal with the modulation vector in the tetragonal crystal plane.

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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Мартынов, Сергей Николаевич
}
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Ba0.6K0.4BiO3 single crystal as a multiple Josephson system: New coherent effect? / L. N. Zherikhina [et al.] // Journal of Physics: Conference Series. - 2012. - Vol. 400, Pt. 2. - Ст. 022146. - P. , DOI 10.1088/1742-6596/400/2/022146 . - ISSN 1742-6588
Кл.слова (ненормированные):
Antiphase -- Coherent effect -- Electric transport -- High-T -- Inhomogeneous superconductors -- Josephson -- Josephson junctions -- Josephson tunneling -- Non-linear I-V -- Polycrystalline samples -- Superconducting gaps -- Superconducting state -- Low temperature effects -- Low temperature engineering -- Magnetic fields -- Superconductivity -- Single crystals
Аннотация: The existence of space inhomogeneous superconductor insulator state (SISIS) found out earlier in polycrystalline samples of high-Tc system Ba0.6K0.4BiO3 (Tc?30 K) is confirmed on Ba0.6K0.4BiO3 single crystal. At T* (T*<Tc, T*?17 K) the transition from the homogeneous superconducting state into the SISIS occurs. SISIS is characterized by the appearance of two gapes on the Fermi surface: semi- and superconducting, that are modulated in space in antiphase, the electric transport between superconducting regions being carried out due to Josephson tunneling. Thus the whole sample becomes a multiple Josephson system. Nonlinear I-V curves, depended on temperature and magnetic field, that are typical to a Josephson system, are observed on Ba0.6K0.4BiO3 single crystal at temperatures below T*. Besides, a step like peculiarity at the values of voltage of the order of one and two superconducting gaps shows up. These peculiarities are suppressed by magnetic field much earlier then critical current. Perhaps the last phenomenon is the consequence of "coherent" state of several successive Josephson junctions, appeared in the exfoliation state. В© Published under licence by IOP Publishing Ltd.

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Доп.точки доступа:
Zherikhina, L. N.; Tskhovrebov, A. M.; Klinkova, L. A.; Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; International Conference on Low Temperature Physics(26 ; 2011 ; Aug. ; 1-17 ; Beijing, China)
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    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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Characteristics of current flow in composites made from a high-temperature superconductor and the low-temperature superconducting metal oxide Ba(PbBi)O-3 / M. I. Petrov [et al.] // Phys. Solid State. - 1997. - Vol. 39, Is. 3. - P. 362-368, DOI 10.1134/1.1130134. - Cited References: 21 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
BAPB1-XBIXO3 SYSTEM
YBA2CU3O7-DELTA
Аннотация: Composites are prepared from a high-temperature superconductor with the 1-2-3 structure and the low-temperature oxide BaPb3/4Bi1/4O3 with various volume concentrations of the high-temperature and low-temperature superconductors. The temperature dependences of the electrical resistivities and critical current densities of the composites are measured. It is shown experimentally that these composites comprise a synthetically created network of Josephson weak links (with a specified degree of coupling). (C) 1997 American Institute of Physics.

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Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Ospishchev, S. V.; Оспищев С. В.; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Khrustalev, B. P.; Хрусталев, Борис Петрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
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    Comparative investigations of the crystal structure and photoluminescence property of eulytite-type Ba3Eu(PO4)3 and Sr3Eu(PO4)3 / H. P. Ji [et al.] // Dalton Trans. - 2015. - Vol. 44, Is. 16. - P. 7679-7686, DOI 10.1039/c4dt03887h. - Cited References:65. - This work was supported by the National Natural Science Foundations of China (grant no. 51032007, no. 51002146, no. 51272242), the Research Fund for the Doctoral Program of Higher Education of China (grant no. 20130022110006), Natural Science Foundations of Beijing (2132050), and the Program for New Century Excellent Talents in the University of the Ministry of Education of China (NCET-12-0950), Beijing Nova Program (Z131103000413047) and Beijing Youth Excellent Talent Program (YETP0635). VVA is partly supported by the Ministry of Education and Science of the Russian Federation. . - ISSN 1477. - ISSN 1477-9234
   Перевод заглавия: Сравнительный анализ кристаллических структур и люминесцентных свойств Ba3Eu(PO4)3 и Sr3Eu(PO4)3. со структурой эвлитина

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
LIGHT-EMITTING-DIODES
DOPED Sr3Gd(PO4(3 PHOSPHOR
EFFICIENT
Аннотация: In this study, the Ba3Eu(PO4)3 and Sr3Eu(PO4)3 compounds were synthesized and the crystal structures were determined for the first time by Rietveld refinement using powder X-ray diffraction (XRD) patterns. Ba3Eu(PO4)3 crystallizes in cubic space group I3d, with cell parameters of a = 10.47996(9) Å, V = 1151.01(3) Å3 and Z = 4; Ba2+ and Eu3+ occupy the same site with partial occupancies of 3/4 and 1/4, respectively. Besides, in this structure, there exists two distorted kinds of the PO4 polyhedra orientation. Sr3Eu(PO4)3 is isostructural to Ba3Eu(PO4)3 and has much smaller cell parameters of a = 10.1203(2) Å, V = 1036.52(5) Å3. The bandgaps of Ba3Eu(PO4)3 and Sr3Eu(PO4)3 are determined to be 4.091 eV and 3.987 eV, respectively, based on the UV–Vis diffuse reflectance spectra. The photoluminescence measurements reveal that, upon 396 nm n-UV light excitation, Ba3Eu(PO4)3 and Sr3Eu(PO4)3 exhibit orange-red emission with two main peaks at 596 nm and prevailing 613 nm, corresponding to the 5D0 → 7F1 and 5D0 → 7F2 transitions of Eu3+, respectively. The dynamic disordering in the crystal structures contributes to the broadening of the luminescence spectra. The electronic structure of the phosphates was calculated by the first-principles method. The analysis elucidats that the band structures are mainly governed by the orbits of phosphorus, oxygen and europium, and the sharp peaks of the europium f-orbit occur at the top of the valence bands.

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Держатели документа:
China Univ Geosci, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Beijing 100083, Peoples R China.
Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China.
SB RAS, LV Kirensky Phys Inst, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Ctr Crystal R&D, Key Lab Funct Crystals & Laser Technol, Beijing 100190, Peoples R China.
Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Russian Acad Sci, Inst Semicond Phys, SB RAS, 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:
Ji, Haipeng; Huang, Zhaohui; Xia, Zhiguo; Molokeev, M. S.; Молокеев, Максим Сергеевич; Jiang, Xingxing; Lin, Zheshuai; Atuchin, V. V.
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Controlled magnetoresistance in Y3/4Lu1/4Ba2Cu3O7-CuO composites at 77 K / D. A. Balaev [et al.] // Tech. Phys. Lett. - 2003. - Vol. 29, Is. 7. - P. 578-581, DOI 10.1134/1.1598555. - Cited References: 17 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
SUPERCONDUCTOR
Аннотация: We have studied the low-temperature magnetoresistance of Y3/4Lu1/4Ba2Cu3O7-CuO composites obtained by fast sintering technique and established a relation between the probing to critical current density ratio j/j(c) and the shape of the magnetoresistance curve rho(H). For j/j(c) 1, the electric resistance arises at a threshold value of the magnetic field strength H-c. For j/j(c) greater than or equal to 1, a linear variation of rho(H) at 77 K in the range from 0 to 14 Oe can be provided by selecting the CuO content (in the 15-30 vol % interval) and the j value (in the 0.003-0.2 A/cm(2) range). In the latter case, the slope drho/dH (i.e., the sensitivity of the electric resistivity with respect to the magnetic field) is 1-20 mOmega cm/Oe and the relative field-induced increase in the resistivity rho(0)

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Shaihutdinov, K. A.; Popkov, S. I.; Попков, Сергей Иванович; Petrov, M. I.; Петров, Михаил Иванович
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10.

    Critical currents in bulk Y3/4Lu1/4Ba2Cu3O7 + BaPbO3 composites / M. I. Petrov [et al.] // Physics Letters, Section A: General, Atomic and Solid State Physics. - 1997. - Vol. 237, Is. 1-2. - P. 85-89
Рубрики:
HIGH-TC-SUPERCONDUCTORS
   WEAK LINKS
   JUNCTIONS
Кл.слова (ненормированные):
Bulk composites -- Critical current density -- Network of weak S-N-S links -- YBaCuO + BaPbO3 -- YBaCuO+BaPbO3 bulk composites -- network of weak S-N-S links -- critical current density
Аннотация: Bulk composites Y3/4Lu1/4Ba2Cu3O7 + BaPbO3 with BaPbO3 volume content of 0-60% have been prepared. Temperature dependences of resistance and critical current density Jc(T) are presented. The best agreement of experimental Jc(T) with theory has been reached for the Gunsenheimer-Schussler-Kummel consideration of superconductor-normal metal-superconductor (S-N-S) junctions in the "clean" limit. В© 1997 Elsevier Science B.V.

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Доп.точки доступа:
Петров, Михаил Иванович; Petrov, M. I.; Balaev, D. A.; Балаев, Дмитрий Александрович; Ospishchev, S. V.; Оспищев С. В.; Шайхутдинов, Кирилл Александрович; Shaikhutdinov, K. A.; Khrustalev, B. P.; Хрусталев, Борис Петрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
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