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Effect of the diamagnetic dilution on the magnetic ordering and electrical conductivity in the Co3O2BO3 : Ga ludwigite / N. B. Ivanova [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 11. - P. 2212–2221, DOI 10.1134/S1063783412110133. - Cited References: 30. - This study was supported by the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-1044.2012.2) and the Russian Foundation for Basic Research (project nos. 12-02-00175-a and 12-02-00470-a). . - ISSN 1063-7834

РУБ Physics, Condensed Matter

Аннотация: Single crystals of cobalt ludwigite Co3O2BO3 with diamagnetic substitution of Ga3+ ions for a part of the cobalt ions have been grown by the flux method. A detailed investigation of the crystal structure and magnetic properties of the compound has been carried out. A preferred character of the occupation of non-equivalent crystallographic positions by gallium has been revealed. It has been found that the effective magnetic moment and the magnetic ordering temperature are decreased compared to those in the original crystal of the Co3O2BO3 ludwigite. It has been noted that the pronounced magnetic anisotropy observed in the crystal lographic ab plane of the original material of the Co3O2BO3 composition disappears in the presence of gallium.

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Публикация на русском языке Влияние диамагнитного разбавления на магнитное упорядочение и электрическую проводимость в людвигите Co3O2BO3:Ga [Текст] / Н. Б. Иванова [и др.] // Физ. тверд. тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54 Вып. 11. - С. 2080-2088

Доп.точки доступа:
Ivanova, N. B.; Иванова, Наталья Борисовна; Platunov, M. S.; Платунов, Михаил Сергеевич; Knyazev, Yu.V.; Князев, Юрий Владимирович; Kazak, N. V.; Казак, Наталья Валерьевна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Nizhankovskii, V. I.
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Magnetic and electrical properties of bismuth cobaltite Bi24(CoBi)O40 with charge ordering / S. S. Aplesnin [и др.] // Phys. Solid State. - 2012. - Vol. 54, Is. 10. - P. 2005-2014, DOI 10.1134/S106378341210006X. - Cited References: 22. - This study was supported by the Russian Foundation for Basic Research (project nos. 09-02-92001-NNS_a, 12-02-00125-a, and 11-02-98004-r_sibir'_a) . - ISSN 1063-7834

РУБ Physics + Condensed Matter
Рубрики:
Thermoelectric-power
   Co3O4
   Conductivity
   Transition
Аннотация: The compound Bi24(CoBi)O40 has been synthesized using the solid-phase reaction method. The temperature and field dependences of the magnetic moment in the temperature range 4 K T 300 K and the temperature dependences of the EPR line width and g-factor at temperatures 80 K T 300 K have been investigated. The electrical resistivity and thermoelectric power have been measured in the temperature range 100 K T 1000 K. The activation energy has been determined and the crossover of the thermoelectric power from the phonon mechanism to the electron mechanism with variations in the temperature has been observed. The thermal expansion coefficient of the samples has been measured in the temperature range 300 K T 1000 K and the qualitative agreement with the temperature behavior of the electrical resistivity has been achieved. The electrical and structural properties of the compound have been explained in the framework of the model of the electronic-structure transition with inclusion of the exchange and Coulomb interactions between electrons and the electron-phonon interaction.

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Публикация на русском языке Магнитные и электрические свойства кобальтита висмута Bi24(CoBi)O40 с зарядовым упорядочением [Текст] / С. С. Аплеснин [и др.] // Физ. тверд. тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54 Вып. 10. - С. 1882-1890

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Gorev, M. V.; Горев, Михаил Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Galyas, A. I.; Yanushkevich, K. I.
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Magnetic and thermoelectric properties of the Mn1-X Ni (X) S solid solutions / G. Makovetskii [et al.] // J. Korean Phys. Soc. - 2013. - Vol. 62, Is. 12. - P. 2059-2062, DOI 10.3938/jkps.62.2059. - Cited References: 9. - This study was supported by the Russian Foundation for Basic Research project No. 09-02-92001-NNS_a; No.12-02-90004 Bel_a; No. 12-02-00125_a; No. 11-02-98018 r_sibir_a, F12R-060 . - ISSN 0374-4884

РУБ Physics, Multidisciplinary
Рубрики:
NICKEL SULPHIDE
TRANSITION
Кл.слова (ненормированные):
Antiferromagnetic materials -- Semiconductor conductivity -- Manganese sulphides
Аннотация: The new sulphide Mn1-X Ni (X) S (0 T (N) . The conductivity type change from the hole to the electronic at X > 0.05 is revealed on the basis of the thermoelectric power measurements. The resistivity and thermopower behaviors are explained in terms of the impurity subband formation into MnS electron excitation gap.

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Держатели документа:
Natl Acad Sci Belarus, GO NPTs Mat Sci Ctr, Minsk 220072, Byelarus
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
MF Reshetneva Aircosm Siberian State Univ, Krasnoyarsk 660014, Russia

Доп.точки доступа:
Makovetskii, G.; Аплеснин, Сергей Степанович; Demidenko, O. F.; Galyas, A.; Yanushkevich, K.; Aplesnin, S. S.; Romanova, O. B.; Романова, Оксана Борисовна; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна
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Nonuniform magnetic states and electrical properties of SmXMn1-XS solid solutions / S. S. Aplesnin [et al.] // IEEE Trans. Magn. - 2011. - Vol. 47, Is. 10. - P. 4413-4416, DOI 10.1109/TMAG.2011.2160715. - Cited References: 13 . - ISSN 0018-9464

РУБ Engineering, Electrical & Electronic + Physics, Applied

Кл.слова (ненормированные):
Conductivity -- magnetic semiconductors -- magnetization processes
Аннотация: The real and imaginary parts of magnetic permeability at the three frequencies 100 Hz, 1 kHz and 10 kHz and magnetic moment in magnetic field H = 0.05 T in the SmXMn1-XS(0.1 <= X <= 0.25) solid solutions at the temperatures 5 K-300 K were measured. Magnetization curves were measured in the range of fields -9 T < H < 9 T at the temperatures T = 5 K, 50 K. Non-linear behavior of the magnetization versus field, residual magnetic moment, logarithmic dependence of imaginary parts of the magnetic permeability maximum on frequency and sharp drop of Im(mu) at T < 40 K for compound Sm0.25Mn0.75 S were found. The electrical resistivity of the SmXMn1-X S(0.5 < x < 0.25) solid solution in the range of temperatures 80 K-300 K were measured. Minimum and maximum in the temperature dependence of the resistivity were found respectively at T = 220 K for X = 0.15 and at T = 100 K for X = 0.2 compounds. This behavior is explained a result of the mobility edge movement and the disorder of the deformation and spin density fluctuations with short-range order.

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Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Har'kov, A. M.; Eremin, E. V.; Еремин, Евгений Владимирович; Romanova, O. B.; Романова, Оксана Борисовна; Balaev, D. A.; Балаев, Дмитрий Александрович; Sokolov, V. V.; Соколов В. В.; Pichugin, A. Yu.; IEEE International Magnetics Conference(2011 ; Apr. ; 25-29 ; Taipei, Taiwan)
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Fractal dimension of cluster boundaries in porous polycrystalline HTSC materials / A. A. Bykov [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 10. - P. 1947-1950, DOI 10.1134/S1063783412100095. - Cited References: 20 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CURRENT-VOLTAGE CHARACTERISTICS
   ELECTRICAL-CONDUCTIVITY
   PERCOLATION
   MIXTURES
   MEDIA
   SUPERCONDUCTORS
   TRANSPORT
   SPHERES
Аннотация: The fractal dimension of the boundaries of clusters formed by pores and granules in polycrystalline materials is shown to be determined by the sample density and crystallite sizes. The dependence of the fractal dimension on the density has a maximum. It is shown that the maximum diamagnetic response can be obtained in a porous high-temperature superconductor with a porosity of 50-60% and small crystallite sizes.

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Публикация на русском языке Фрактальная размерность границ кластеров в пористых поликристаллических ВТСП-материалах [Текст] / А. А. Быков [и др.] // Физ. тверд. тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54 Вып. 10. - С. 1825-1828

Держатели документа:
[Bykov, A. A.
Terent'ev, K. Yu.
Gokhfeld, D. M.
Petrov, M. I.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Bykov, A. A.; Быков, Алексей Анатольевич; Terent'yev, K. Yu.; Терентьев, Константин Юрьевич; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Petrov, M. I.; Петров, Михаил Иванович
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    Multiband description of optical conductivity in ferropnictide superconductors / O. V. Dolgov [et al.] // J. Supercond. Nov. Magn. - 2013. - Vol. 26, Is. 8. - P. 2637-2640, DOI 10.1007/s10948-013-2150-3 . - ISSN 1557-1939
   Перевод заглавия: Многозонное описание оптической проводимости в ферропниктидных сверхпроводниках
Кл.слова (ненормированные):
Effects of disorder -- Multiband superconductivity -- Optical conductivity -- Effects of disorder -- Experimental datum -- Multi-band superconductors -- Multiband superconductivity -- Novel superconductor -- Order parameter symmetry -- Paramagnetic impurity -- Single-band superconductors -- Optical conductivity -- Paramagnetism -- Superconductivity -- Superconducting materials
Аннотация: We study optical properties of the multiband superconductors with an s В± order parameter symmetry. By comparing results of our theory with experimental data on optical conductivity for Ba0.68K 0.32Fe2As2 single crystals, we show that satisfactory description of the novel superconductors can be obtained only considering a strong electron-boson coupling. We reexamine the effect of disorder and demonstrate that multiband superconductors are more robust with respect to it than naively expected by simple analogy with paramagnetic impurities in single-band superconductors. Moreover, disorder may give rise to new effects, in particular to a phase transition s В±>s ++. We discuss how the systematic study of disorder impact on the density of states and the optical conductivity may provide information on the underlying order parameter structure. В© 2013 Springer Science+Business Media New York.

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Держатели документа:
Max Planck Inst Solid State Res, Stuttgart, Germany
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk, Russia
Fac Sci & Technol, Enschede, Netherlands
MESA Inst Nanotechnol, Enschede, Netherlands

Доп.точки доступа:
Dolgov, O. V.; Efremov, D. V.; Korshunov, M. M.; Коршунов, Максим Михайлович; Charnukha, A.; Boris, A. V.; Golubov, A. A.
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Epov, M. I.
A temperature-dependent dielectric model for water- and oil-containing rocks in the frequency range from 0.5 to 15 GHz / M. I. Epov, I. V. Savin, V. L. Mironov // Russ. Geol. Geophys. - 2012. - Vol. 53, Is. 7. - P. 698-703, DOI 10.1016/j.rgg.2012.05.008. - Cited References: 17 . - ISSN 1068-7971

РУБ Geosciences, Multidisciplinary
Рубрики:
MOIST SOILS
POLARIZATION PROCESSES
PERMITTIVITY METHOD
Кл.слова (ненормированные):
dielectric permittivity -- effective conductivity -- water-containing rocks -- temperature-dependent dielectric model
Аннотация: Dielectric spectra of water-containing rocks forming a mineral framework of the oil-saturated bed (clay minerals amount to˂16%) were measured in the frequency range from 500 MHz to 15 GHz and in the temperature range from 20 to 80 °C. A physical model for computing spectra of the dielectric permittivity and effective conductivity of the studied rocks has been elaborated. Its input parameters are water (salt solution) content and temperature. The errors of the computed spectra relative to the measured ones are estimated.

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Публикация на русском языке Эпов, Михаил Иванович. Диэлектрическая температурная модель влажных нефтесодержащих пород в диапазоне частот от 0.5 до 15 ГГц [Текст] / М. И. Эпов, И. В. Савин, В. Л. Миронов // Геол. и геофиз. - 2012. - Т. 53 № 7. - С. 912-919

Держатели документа:
[Epov, M. I.] Russian Acad Sci, Siberian Branch, AA Trofimuk Inst Petr Geol & Geophys, Novosibirsk 630090, Russia
[Savin, I. V.
Mironov, V. L.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Mironov, V. L.] Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 66014, Russia

Доп.точки доступа:
Savin, I. V.; Савин, Игорь Викторович; Mironov, V. L.; Миронов, Валерий Леонидович
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Multiband model for the dynamical conductivity of superconducting pnictides manifestation of impurity induced s±às++ transition / D. V. Efremov [et al.] // International conferences «Phase separation and Superstripes in High Temperature Superconductors and Related Materials (Superstripes-2012)». - 2012. - P. 127
Аннотация: The multiband (4 x4 bands) model and its reduction to the effective two-band model taking into account the strong interaction with intermediate spin-fluctuations have been successively applied to the description of the properties of Ba1-xKxFeAs2. On the base of this approach and using the extension of the formalism developed for the multiband system MgB2 we have calculated free energy and frequency dependent optical complex conductivity \ sigma ( \omega ,T) in the superconducting as well as the normal states of pnictides. An application of the presented approach to the ellipsometry data for single crystals of Ba1-xKxFeAs2 allows to describe some experimental features connected to multigap nature and strong coupling effects. Effects of rather strong nonmagnetic impurities beyond the Born approximation which can lead to the transitions in the superconducting order parameter S+- - S++ were investigated.

Программа конференции

Доп.точки доступа:
Efremov, D. V.; Korshunov, M. M.; Коршунов, Максим Михайлович; Golubov, A. A.; Dolgov, O. V.; Ettore Majorana Foundation, Centre for Scientific Culture; Rome International Center for Materials Science; International School of Solid State Physics; "Phase separation and Superstripes in High Temperature Superconductors and Related Materials", Int. Conf. (55 ; 2012 ; July ; 11-17 ; Erice (Sicily), Italy)
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    Влияние фотонной обработки и температуры на проводимость In2O3 пленок, полученных автоволновым окислением / И. А. Тамбасов [и др.] // Вестник СибГАУ. - 2013. - № 3. - С. 103-106. - Работа выполнена частично при финансовой поддержке ФЦП «Исследования и разработки по приоритетным направлениям развития научно-технологичного комплекса России на 2007-2013 годы» (госконтракт № 14.513.11.0023), а также Министерства образования и науки Российской Федерации (договор № 02.G25.31.0043) . - ISSN 1816-9724
   Перевод заглавия: The impact of the photon processing and temperature on the conductivity of In2O3 films produed with autowave oxidation
Кл.слова (ненормированные):
ТОНКИЕ ПЛЕНКИ -- ОКСИД ИНДИЯ -- АВТОВОЛНОВОЕ ОКИСЛЕНИЕ -- УЛЬТРАФИОЛЕТОВОЕ ОБЛУЧЕНИЕ -- THIN FILMS -- INDIUM OXIDE -- AUTO-WAVE OXIDATION -- ULTRAVIOLET IRRADIATION
Аннотация: Пленки оксида индия были синтезированы автоволновой реакцией окисления на покровном стекле, кварце и монокристалле MgO. Толщина пленки измерялась с помощью режима «cross-section» сканирующего электронного микроскопа и составляла ~300 нм. Оптическая ширина запрещенной зоны оксида индия была ~3.5 эВ. Исследования сопротивления In2O3 пленки от температуры в теневых условиях показали, что при нагревании до 100 0С сопротивление увеличивается на ~10 %. Показано, что при фотооблучении происходит резкое уменьшение электрического сопротивления пленок, максимальное изменение которого составило 52 % при комнатной температуре. Определены две скорости релаксации сопротивления пленок после прекращения облучения 15 Ом/сек первые 30 сек и 7 Ом/сек в остальное время. Сделано предположение, что фотовосстановление является доминирующим механизмом, ответственным за изменения проводимости пленок.
Indium oxide films were synthesized by auto-wave oxidation reaction on the cover glass, quartz and single crystal MgO. The film thickness was measured with a mode «cross-section» scanning electron microscope and was ~ 300 nm. Optical band gap of indium oxide was ~3.5 eV. The study of In2O3 film resistance versus temperature in the dark conditions showed that when heated to 100 °C the resistance increases by about 10 %. It is shown that the_ films electric resistance decreases sharply under photo radiation and the maximum change was 52 % at room temperature. The two film resistance relaxation rates after irradiation have been determined to be 15 Ohm/s the first 30 seconds and 7 Оhm/s f for the rest, respectively. On the basis of the above stated the authors suggest that the photo reduction is the dominant mechanism responsible for the changes in conductivity of In 2O 3 films.

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Тамбасов, Игорь Анатольевич; Tambasov, I.A.; Немцев, Иван Васильевич; Nemtsev, I.V.; Савранский, Д. С.; Мацынин, Алексей Александрович; Matsynin, A.A.; Ежикова, Е. В.
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10.

Magnetic-field- and bias-sensitive conductivity of a hybrid Fe/SiO 2/p-Si structure in planar geometry / N. V. Volkov [et al.] // J. Appl. Phys. - 2011. - Vol. 109, Is. 12. - Ст. 123924. - P. , DOI 10.1063/1.3600056 . - ISSN 0021-8979
Кл.слова (ненормированные):
Channel switching -- Comparative analysis -- Fe films -- Fe layer -- Ferromagnetic films -- High temperature -- Hybrid structure -- Inversion layer -- Metal-insulator-semiconductors -- Negative magneto-resistance -- Planar geometries -- Positive magnetoresistance -- Schottky barriers -- Semiconductor substrate -- Temperature variation -- Weak localization -- Critical currents -- Electric resistance -- Ferromagnetic materials -- Geometry -- Magnetic fields -- Magnetoelectronics -- Magnetoresistance -- Metal insulator boundaries -- Metal insulator transition -- MIS devices -- Schottky barrier diodes -- Silicon -- Silicon compounds -- Switching circuits -- Transport properties -- Semiconducting silicon
Аннотация: Pronounced magnetic-field- and bias-sensitive features of the transport properties of a Fe/SiO2/p-Si hybrid structure in planar geometry at temperature variation are investigated. Comparative analysis of two Fe/SiO 2/p-Si samples, one with a continuous Fe film and the other with two electrodes formed from a Fe layer and separated by a micron gap, shows that these features are due to the metal-insulator-semiconductor (MIS) transition with a Schottky barrier near the interface between SiO2 and p-Si. Resistance of such a MIS transition depends exponentially on temperature and bias. In the structure with a continuous ferromagnetic film, the competition between conductivities of the MIS transition and the Fe layer results in the effect of current channel switching between the Fe layer and a semiconductor substrate. Within certain limits, this process can be controlled by a bias current and a magnetic field. Positive magnetoresistance of the structures at high temperatures is determined, most likely, by disorder-induced weak localization. In the structure with the gap, negative magnetoresistance is observed at certain temperature and bias. Its occurrence should be attributed to an inversion layer formed in the semiconductor near the SiO2/p-Si interface when MIS transition is in the inversion regime. В© 2011 American Institute of Physics.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Eremin, E. V.; Еремин, Евгений Владимирович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Zharkov, S. M.; Жарков, Сергей Михайлович
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11.

Metallic layer in the Earth's lower mantle / S. G. Ovchinnikov [et al.] // JETP Letters. - 2012. - Vol. 96, Is. 2. - P. 129-132, DOI 10.1134/S002136401214010X. - Cited References: 25. - We are thankful to Dr. V. I. Anisimov for discussions. This work was supported by the Presidium of the Russian Academy of Sciences (project no. 2.16); Siberian Branch, Russian Academy of Sciences (project nos. 96 and 97); and Russian Foundation for Basic Research (project no. 12-02-90410). . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
ELECTRICAL-CONDUCTIVITY
   MAGNESIOWUSTITE
   MECHANISM
   CORE
Аннотация: We predict the insulator-metal-insulator transitions for the temperature and pressure of the lower mantle with the metal layer thickness Delta h a parts per thousand 400 km at the depth of 1400-1800 km. The insulator-metal transition has the Mott-Hubbard origin, while the second transition from metal to insulator results from spin crossover of the Fe2+ ions from high spin S = 2 to low spin S = 0 state. The conductivity in the metal layer may attain 250 S/m. The depth profile of the conductivity is also suggested.

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Публикация "на русском языке" Metallic layer inside the Earth's lower mantle [Текст] / S. G. Ovchinnikov [и др.] // Письма в Журн. эксперим. и теор. физ. : Санкт-Петербургская издательская фирма "Наука" РАН, 2012. - Т. 96 Вып. 2. - С. 135-138

Держатели документа:
[Ovchinnikov, S. G.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Ovchinnikova, T. M.] Russian Acad Sci, Sukhachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
[Dyad'kov, P. G.
Plotkin, V. V.] Russian Acad Sci, Siberian Branch, Trofimuk Inst Petr Gas Geol & Geophys, Novosibirsk 630090, Russia
[Litasov, K. D.] Russian Acad Sci, Siberian Branch, Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Ovchinnikova, T. M.; Dyad'kov, P. G.; Plotkin, V. V.; Litasov, K. D.
}
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12.

    Kolovsky, A. R.
    Master equation approach to conductivity of bosonic and fermionic carriers in one- and two-dimensional lattices / A. R. Kolovsky // Ann. Phys.-Berlin. - 2014. - Vol. 526, Is. 1/2. - P. 102-111, DOI 10.1002/andp.201300169. - Cited References: 24. - The author express his gratitude to D.N. Maksimov for useful remarks and acknowledge financial support of Russian Academy of Sciences through the SB RAS integration Project No. 29 (Dynamics of atomic Bose-Einstein condensates in optical lattices). . - ISSN 0003-3804. - ISSN 1521-3889
   Перевод заглавия: Проводимость с бозе и ферми носителями в в одномерных и двумерных решетках: подход уравнения для матрицу плотности

РУБ Physics, Multidisciplinary
Рубрики:
CONDUCTANCE
Кл.слова (ненормированные):
diffusive current -- the Hall effect
Аннотация: The master equation approach to diffusive current of bosonic or fermionic carriers in one- and two-dimensional lattices is discussed. This approach is shown to reproduce all known results of the linear response theory, including the integer quantum Hall effect for fermionic carriers. The main advantage of the approach is that it allows to calculate the current beyond the linear response regime where new effects are found. In particular, the Hall current can be inverted by changing orientation of the static force (electric field) relative to the primary axes of the lattice.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Коловский, Андрей Радиевич; Russian Academy of Sciences through the SB RAS integration Project [29]
}
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13.

Heat conductivity and thermal expansion of crystal strontium tetraborate SrB4O7 / P. A. Popov [et al.] // Dokl. Phys. - 2012. - Vol. 57, Is. 2. - P. 54-56, DOI 10.1134/S1028335812020036. - Cited References: 13. - This work was in part supported by a grant of the President of the Russian Federation (NSh-4645.2010.2), by the ABTsP "Development of the Scientific Potential of Higher Schools" (grant no. 2.1.1/10747), and by the Programs of OFN of the Russian Academy of Sciences "Physics of New Materials and Structures" (grant no. 2.5.2). . - ISSN 1028-3358

РУБ Mechanics + Physics, Multidisciplinary

Аннотация: An experimental investigation of the heat conductivity and thermal expansion of an strontium tetraborate (SBO) crystal in wide temperature intervals was demonstrated. The single crystals used for manufacturing samples were grown by the Czochralski method from a melt with a stoichiometric ratio of components. The blend was synthesized from strontium carbonate and boric acid. The components were mechanically mixed in a carbon-glass bowl with the addition of a small amount of distilled water. The mixture was heated on a sandy bath to 60-90°C and shuffled with periodic addition of small portions of water until the carbonic-gas bubbles ceased to release. The growth of crystals was carried out on a seed oriented in the crystallographic direction b, and the extraction rate amounted to 2.4 mm/day over 6 days. the results obtained indicate the promising use of the SBO crystal matrix as a multifunctional optical material.

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Публикация на русском языке Теплопроводность и тепловое расширение кристалла тетрабората стронция SrB4O7 [Текст] / П. А. Попов [и др.] // Доклады Академии наук. - 2012. - Т. 442 № 4. - С. 462-464

Держатели документа:
[Popov, P. A.
Solomennik, V. D.] Bryansk State Univ, Bryansk 241036, Russia
[Zaitsev, A. I.
Zamkov, A. V.
Gorev, M. V.] Russian Acad Sci, Siberian Branch, Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Popov, P. A.; Solomennik, V. D.; Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; Gorev, M. V.; Горев, Михаил Васильевич
}
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14.

Plotkin, V. V.
Detecting a magnesiowustite phase transition in the lower mantle by inversion of geomagnetic data / V. V. Plotkin, P. G. Dyad'kov, S. G. Ovchinnikov // Russ. Geol. Geophys. - 2014. - Vol. 55, Is. 9. - P. 1138-1145, DOI 10.1016/j.rgg.2014.08.009. - Cited References: 26. - The study was supported by the Siberian Branch of the Russian Academy of Sciences (interdisciplinary integration project no. 96). . - ISSN 1068-7971. - ISSN 1878-030X

РУБ Geosciences, Multidisciplinary
Рубрики:
ELECTRICAL-CONDUCTIVITY
   SATELLITE MEASUREMENTS
   EARTHS MANTLE
   GLOBAL MVS
   INDUCTION
   FIELD
   METALLIZATION
Кл.слова (ненормированные):
magnesiowustite -- metallic state -- phase transition -- lower mantle -- conductivity -- geomagnetic variations -- global network
Аннотация: Global geomagnetic data are inverted for detecting a high-conductivity layer at depths of 1500-2000 km to test the hypothesis of a magnesiowustite phase transition in the lower mantle. We present the results of processing of both synthetic and global data-average monthly values of the geomagnetic field from 1920 to 2009. The inverted global data are consistent with the possible existence of a high-conductivity layer at great depths in the lower mantle.

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Публикация на русском языке Плоткин, Валерий Викторович. Выявление фазового перехода магнезиовюстита в нижней мантии: инверсия геомагнитных данных [Текст] / В. В. Плоткин, П. Г. Дядьков, С. Г. Овчинников // Геол. и геофиз. - Новосибирск : Изд-во СО РАН, 2014. - Т. 55 № 9. - С. 1436-1445

Держатели документа:
Russian Acad Sci, AA Trofimuk Inst Petr Geol & Geophys, Siberian Branch, Novosibirsk 630090, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Dyad'kov, P. G.; Дядьков, Петр Георгиевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Плоткин, Валерий Викторович; Siberian Branch of the Russian Academy of Sciences [96]
}
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15.

    Unexpected impact of magnetic disorder on multiband superconductivity / M. M. Korshunov [et al.] // Phys. Rev. B. - 2014. - Vol. 90, Is. 13, DOI 10.1103/PhysRevB.90.134517. - Cited References: 41. - The authors are grateful to S.-L. Drechsler, P.J. Hirschfeld, K. Kikoin, and S.G. Ovchinnikov for useful discussions. We acknowledge partial support by the Dynasty Foundation and ICFPM (MMK), the Ministry of Education and Science of the Russian Federation (Grant No. 14Y26.31.0007), RFBR (Grant Nos. 12-02-31534 and 13-02-01395), President Grant for Government Support of the Leading Scientific Schools of the Russian Federation (NSh-2886.2014.2), DFG Priority Program 1458, and FP7 EU-Japan program IRON SEA. . - ISSN 1098-0121. - ISSN 1550-235X
   Перевод заглавия: Непредвиденное влияние магнитного беспорядка на многозонную сверхпроводимость

РУБ Physics, Condensed Matter
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTIVITY
   PARAMAGNETIC IMPURITIES
   IRON
   CONDUCTIVITY
   ALLOYS
Аннотация: We analyze how the magnetic disorder affects the properties of the two-band s± and s++ models, which are the subject of discussions regarding iron-based superconductors and other multiband systems like MgB2. We show that there are several cases when the transition temperature Tc is not fully suppressed by magnetic impurities in contrast to the Abrikosov-Gor'kov theory, but a saturation of Tc takes place in the regime of strong disorder. These cases are: (1) the purely interband impurity scattering and (2) the unitary scattering limit. We show that in the former case the s± gap is preserved, while the s++ state transforms into the s± state with increasing magnetic disorder. For case (2), the gap structure remains intact.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Leibniz Inst Festkorper & Werkstoffforsch, D-01069 Dresden, Germany
Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands
Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands
Moscow Inst Phys & Technol, Dolgoprudnyi, Russia
Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
Lebedev Phys Inst RAN, Moscow, Russia

Доп.точки доступа:
Korshunov, M. M.; Коршунов, Максим Михайлович; Efremov, D. V.; Golubov, A. A.; Dolgov, O. V.; Dynasty Foundation; ICFPM; Ministry of Education and Science of the Russian Federation [14Y26.31.0007]; RFBR [12-02-31534, 13-02-01395]; Leading Scientific Schools of the Russian Federation [NSh-2886.2014.2]; DFG [1458]; EU-Japan
}
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16.

Electron-conductivity high-Tc superconductor with cubic symmetry / V. E. Volkov [et al.] // JETP Letters. - 1992. - Vol. 55, Is. 10. - P. 616-620. - Cited References: 4 . - ISSN 0021-3640
Аннотация: Ceramic samples which exhibit a superconductivity with T(c) = 117 K have been synthesized in the Tl-Pb-Sr-Ca-Ba-Cu-O-F system. According to x-ray diffraction, the symmetry of the samples is cubic, with a lattice constant a = 6.04 angstrom. At room temperature the conductivity is of the n type.

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Публикация на русском языке Электронный высокотемпературный сверхпроводник с кубической симметрией [Текст] / В. Е. Волков [и др.] // Письма в "Журн. эксперим. и теор. физ.". - 1992. - Т. 55 Вып. 9-10. - С. 590-593

Доп.точки доступа:
Volkov, V. E.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Kovalev, Y. G.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Fokina, N. P.; Chernov, V. K.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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17.

Kveglis, L. I.
The self-organization of tetrahedrally close-packed structures in magnetic nanocrystalline Tb-Fe and Co-Pd films / L. I. Kveglis, A. V. Kuzovnikov, I. V. Timofeev ; ed.: BM Darinskii, , BM Darinsk // Mechanical spectroscopy III: Mechanical spectroscopy and relaxation phenomena IN SOLIDS. Ser. Solid state phenomena : Trans tech publications LTD, 2006. - Vol. 115. - P. 267-273. - Cited References: 19 . - ISBN 1012-0394. - ISBN 3-908451-24-8

РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter + Spectroscopy
Рубрики:
AMORPHOUS FILMS
Кл.слова (ненормированные):
dissipative structures -- explosive crystallization -- thermal conductivity -- Tb-Fe films -- Co-Pd films
Аннотация: The self-organization of an atomic structure in Tb30Fe70 and Co50Pd50 films possessing of high values of the perpendicular magnetic anisotropy (PMA) constant (K perpendicular to similar to 10(6) erg/cm(3)) is investigated by transmission electron microscopy. The crystallization of the films is realized in an explosive way with formation of different dissipative structures from the initial nanocrystalline state. In present work the structural model of a thin film in mezzo-scale and the correlation of a structure with magnetic properties are discussed.

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Доп.точки доступа:
Kuzovnikov, A. V.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Darinskii, B. M. \ed.\; International Conference on Mechanical Spectroscopy and Relaxation Phenomena in Solids (3 ; 2006 ; Cracow, Poland)
}
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18.

Belyaev, B. A.
Impedance spectroscopy investigation of electrophysical characteristics of the electrode-liquid crystal interface / B. A. Belyaev, N. A. Drokin // Phys. Solid State. - 2015. - Vol. 57, Is. 1. - P. 181-187, DOI 10.1134/S1063783415010060. - Cited References:22. - This study was supported by the Siberian Branch of the Russian Academyof Sciences (integration project no. 109). . - ISSN 1063. - ISSN 1090-6460. -

РУБ Physics, Condensed Matter
Рубрики:
DIELECTRIC-PROPERTIES
CONDUCTIVITY
Аннотация: The behavior of frequency dependences of the impedance of a capacitive measuring cell with a liquid crystal has been investigated in the frequency range from 10−1 to 105 Hz. A method for determining electrophysical characteristics of the liquid crystal in the bulk and at the liquid crystal-metal electrode interface has been proposed and tested for liquid crystals of the alkyl cyanobiphenyl series, which are doped with ionic surfactants. The method is based on the use of an equivalent electrical circuit, which makes it possible to approximate the impedance spectra with the required accuracy, and also on the determination of the frequency at the singular point in the impedance spectra, at which the reactive component of the electric current flowing through the liquid-crystal cell is negligible compared to the active component.

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Публикация на русском языке Беляев, Борис Афанасьевич. Исследование электрофизических характеристик границы электрод–жидкий кристалл методом импедансной спектроскопии [Текст] / Б. А. Беляев, Н. А. Дрокин // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2015. - Т. 57 Вып. 1. - С. 170-175

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Drokin, N. A.; Дрокин, Николай Александрович; Беляев, Борис Афанасьевич; Siberian Branch of the Russian Academy of Sciences [109]
}
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19.

Bobrov, P. P.
Dielectric permittivity spectra of oil-water-saturated sandy-clayey rocks of different mineralogical compositions and relaxation properties of water in these rocks / P. P. Bobrov, V. L. Mironov, A. V. Repin // Russ. Geol. Geophys. - 2015. - Vol. 56, Is. 7. - P. 1065-1073, DOI 10.1016/j.rgg.2015.06.007. - Cited References: 21. - This work was supported by RFBR (grant nos. 12-05-00502a and 14-05-00151a). . - ISSN 1068-7971

РУБ Geosciences, Multidisciplinary
Рубрики:
MOIST SOILS
   FREQUENCY
   MODEL
   TEMPERATURE
   SALINITY
   RANGE
   GHZ
Кл.слова (ненормированные):
Conductivity -- Dielectric permittivity -- Multifrequency dielectric relaxation -- Oil-bearing deposits -- Sandy-clayey rocks
Аннотация: Experimental measurements of the dielectric permittivity and equivalent conductivity of sandy-clayey samples (a mixture of river sand with bentonite or kaolin) saturated with salt-solution-diesel-fuel emulsions were performed in the frequency range from 10 kHz to 1 GHz at temperatures of 25-65 °C. It is shown that when the content of the salt solution in the saturating fluid does not exceed 10%, the dielectric permittivity in the frequency range from 1 MHz to 1 GHz depends little on the mineral composition of the sample and on the concentration of the saturating solution. When the portion of water is 33.3% or higher, increasing the concentration of the salt solution leads to an increase in the equivalent conductivity and the real part of the complex dielectric permittivity. Using the refractive model of the complex dielectric permittivity, we have estimated the dielectric properties of bound water, which depend on temperature and the type of clay (bentonite or kaolin) in the sand-clay mixture but are independent of the water saturation and the amount of clay in the sample.

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Публикация на русском языке Бобров, Павел Петрович. Спектры диэлектрической проницаемости нефтеводонасыщенных песчано-глинистых пород различного минералогического состава и релаксационные свойства воды в этих породах [Текст] / П. П. Бобров, В. Л. Миронов, А. В. Репин // Геол. и геофиз. - Новосибирск : Изд-во СО РАН, 2015. - Т. 56 № 7. - С. 1359-1368

Держатели документа:
Omsk State Pedagogical University, Naberezhnaya im. Tukhachevskogo 14, Omsk, Russian Federation
L.V. Kirenskii Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50, str. 38, Krasnoyarsk, Russian Federation
M.F. Reshetnev Siberian State Aerospace University, pr. im. Gazety Krasnoyarskii Rabochii 31, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Repin, A. V.; RFBR [12-05-00502a, 14-05-00151a]
}
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20.

    Synthesis, structural and spectroscopic properties of acentric triple molybdate Cs2NaBi(MoO4)3 / A. A. Savina [et al.] // J. Solid State Chem. - 2015. - Vol. 225. - P. 53–58, DOI 10.1016/j.jssc.2014.11.023. - Cited References: 66. - The authors are grateful to Dr. K.M. Khal'baeva and Dr. Irina A. Gudkova for their assistance in preparing the compound and taking X-ray single-crystal diffraction data. This study is partly supported by the Russian Foundation for Basic Research (Grants 13-03-01020 and 14-03-00298). V.V.A., A.S.K. and A.S.O. gratefully acknowledge the Ministry of Education and Science of the Russian Federation for a partial financial support. . - ISSN 0022-4596. - ISSN 1095-726X
   Перевод заглавия: Синтез, структурные и спектроскопические свойства ацентричного тройного молибдата Cs2NaBi(MoO4)3

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
CRYSTAL-STRUCTURE
   SINGLE-CRYSTALS
   VIBRATIONAL PROPERTIES
   RAMAN-SPECTROSCOPY
   HYDROTHERMAL SYNTHESIS
   DIELECTRIC-PROPERTIES
   SELECTIVE OXIDATION;
   BISMUTH MOLYBDATES
   IONIC-CONDUCTIVITY
   OPTICAL-PROPERTIES
Кл.слова (ненормированные):
Triple molybdate -- Sodium -- Cesium -- Bismuth -- Crystal structure -- Raman spectroscopy -- CRYSTAL-STRUCTURE -- SINGLE-CRYSTALS -- VIBRATIONAL PROPERTIES -- RAMAN-SPECTROSCOPY -- HYDROTHERMAL SYNTHESIS -- DIELECTRIC-PROPERTIES -- SELECTIVE OXIDATION; -- BISMUTH MOLYBDATES -- IONIC-CONDUCTIVITY -- OPTICAL-PROPERTIES
Аннотация: New ternary molybdate Cs2NaBi(MoO4)3 is synthesized in the system Na2MoO4–Cs2MoO4–Bi2(MoO4)3. The structure of Cs2NaBi(MoO4)3 of a new type is determined in noncentrosymmetric space group R3c, a=10.6435(2), c=40.9524(7) Å, V=4017.71(13) Å3, Z=12 in anisotropic approximation for all atoms taking into account racemic twinning. The structure is completely ordered, Mo atoms are tetrahedrally coordinated, Bi(1) and Bi(2) atoms are in octahedra, and Na(1) and Na(2) atoms have a distorted trigonal prismatic coordination. The Cs(1) and Cs(2) atoms are in the framework cavities with coordination numbers 12 and 10, respectively. No phase transitions were found in Cs2NaBi(MoO4)3 up to the melting point at 826 K. The compound shows an SHG signal, I2w/I2w(SiO2)=5 estimated by the powder method. The vibrational properties are evaluated by Raman spectroscopy, and 26 narrow lines are measured.

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Держатели документа:
SB RAS, Baikal Inst Nat Management, Lab Oxide Syst, Ulan Ude 670047, Russia.
Buryat State Univ, Dept Chem, Ulan Ude 670000, Russia.
SB RAS, Rzhanov 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.
SB RAS, Nikolaev Inst Inorgan Chem, Lab Crystal Chem, Novosibirsk 630090, Russia.
Novosibirsk State Univ, Dept Nat Sci, Novosibirsk 630090, Russia.
SB RAS, Kirensky Inst Phys, Lab Mol Spectroscopy, Krasnoyarsk 660036, Russia.
SB RAS, Nikolaev Inst Inorgan Chem, Lab Epitaxial Layers, Novosibirsk 630090, Russia.
Novosibirsk State Univ, Lab Res Methods Composit & Struct Funct Mat, Novosibirsk 630090, Russia.
SB RAS, Kirensky Inst Phys, Lab Crystal Struct, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia.
SB RAS, Inst Automat & Elect, Lab Condenced Matter Spectroscopy, Novosibirsk 630090, Russia.

Доп.точки доступа:
Savina, A. A.; Atuchin, V. V.; Solodovnikov, S. F.; Solodovnikova, Z. A.; Krylov, A. S.; Крылов, Александр Сергеевич; Maximovsky, E. A.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Pugachev, A. M.; Khaikina, E. G.; Russian Foundation for Basic Research [4828.2012.2, 12-02-31205]; Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" [8379]
}
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