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    Синтез и электрофизические свойства композитов на основе сверхвысокомолекулярного полиэтилена и углеродных нанотрубок / И. А. Маркевич [и др.] // Журн. СФУ. Техн. и технол. - 2018. - Т. 11, № 2. - С. 190-197 ; J. Sib. Fed. Univ. Eng. Technol., DOI 10.17516/1999-494X-0022. - Библиогр.: 8. - Работа выполнена при поддержке Фонда содействия развитию малых форм предприятий в научно-технической сфере в рамках договора № 9594ГУ/2015 от 01.02.2016. . - ISSN 1999-494X
   Перевод заглавия: Synthesis and electrophysical properties of ultrahigh-molecular-weight polyethylene and carbon nanotubes based composites
Кл.слова (ненормированные):
композиты -- сверхвысокомолекулярный полиэтилен -- углеродные нанотрубки -- диэлектрическая проницаемость -- проводимость -- composites -- ultrahigh-molecular-weight polyethylene -- carbon nanotubes -- dielectric permittivity -- conductivity
Аннотация: Получены композиты на основе сверхвысокомолекулярного полиэтилена и углеродных нанотрубок методом смешивания компонентов в ксилоле при определенных температурах. Комплексные проводимости и диэлектрические проницаемости образцов материалов измерены в диапазоне частот от 100 Гц до 1 ГГц. Установлены условия синтеза как электропроводящих, так и диэлектрических композитов. При этом величина проводимости зависит не только от концентрации углеродных нанотрубок, но и от структуры их распределения в полимерной матрице, которая, в свою очередь, зависит от температурных условий получения композита.
Composites based on ultrahigh-molecular-weight polyethylene and carbon nanotubes were obtained by mixing the components in xylene at certain temperatures. The complex conductivities and permittivities of the material samples were measured in the frequency range from 100 Hz to 1 GHz. The conditions for the synthesis of both electrically conducting and dielectric composites were established. The conductivity depends not only on the concentration of carbon nanotubes, but also on the structure of their distribution in the polymer matrix, which in turn depends on the temperature conditions for obtaining the composite.

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Держатели документа:
Институт химии и химической технологии СО РАН ФИЦ «Красноярский научный центр СО РАН»
Институт физики им. Л.В. Киренского СО РАН ФИЦ «Красноярский научный центр СО РАН»
Сибирский федеральный университет

Доп.точки доступа:
Маркевич, И. А.; Markevich I. A.; Селютин, Г. Е.; Selyutin G. E.; Дрокин, Николай Александрович; Drokin, N. A.; Беляев, Борис Афанасьевич; Belyaev, B. A.

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    Исследование микроструктурных особенностей, фазового состава и магнитных свойств композитов на основе YBCO и добавок несверхпроводящего компонента СuО, полученного в плазме дугового разряда низкого давления / И. В. Карпов, А. В. Ушаков, А. А. Лепешев [и др.] // Материаловедение. - 2020. - № 6. - С. 27-32, DOI 10.31044/1684-579X-2020-0-6-27-32. - Библиогр.: 12 . - ISSN 1684-579X
   Перевод заглавия: Investigation of microstructural features, phase composition and magnetic properties of YBCO-based composites and additives of nonsuperconducting component cuo obtained in low-pressure arc plasma
Кл.слова (ненормированные):
плазма дугового разряда низкого давления -- нанопорошок CuO -- центры пиннинга -- высокотемпературный сверхпроводник -- low-pressure arc plasma -- CuO nanopowder -- Pinning center -- high-temperature superconductor
Аннотация: Разработан метод, позволяющий формировать на поверхности дисперсных частиц порошка ВТСП-керамики несверхпроводящего покрытия, состоящего из самоорганизующихся кристаллов CuO, размеры которых менее длины когерентности, т.е. в пределах нескольких десятков нанометров. Показано, что сочетание самоорганизующихся структур в виде «усов» и наночастиц, появляющихся в результате совместного спекания порошков YBa2Cu3O7-x и электродуговых нанопорошков CuO, приводит к существенному увеличению плотности тока и появлению пик-эффекта в области сильных магнитных полей. Очень высокая плотность тока возникает из сложного пиннинга вихрей, где дефекты в виде «усов» обеспечивают большую энергию пиннинга, а наночастицы подавляют крип потока. Регулирование морфологии подобных структур возможно простым изменением концентрации нанодисперсных добавок. Показано, что наиболее оптимальной является добавка CuO в количестве 20% (мас.).
A method has been developed, that allows one to form a non-superconducting coating on the surface of dispersed particles of an HTSC ceramic powder consisting of self-organizing CuO crystals whose sizes are less than the coherence length, i.e. within a few tens of nanometers. It was found out that the combination of self-organizing structures in the form of «whiskers» and nanoparticles resulting from the joint sintering of YBa2Cu3O7-x powders and CuO nanocrystals led to a significant increase in current density and the appearance of a peak effect in the region of strong magnetic fields. A very high current density arises from complex pinning of vortices, where defects in the form of «whiskers» provide a large pinning energy, and nanoparticles suppress creep flux. Morphology of such structures can be regulated by a simple change in the concentration of nanodispersed additives. It was determined that the addition of CuO in an amount of 20 wt.% was the most optimal.

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Переводная версия Investigation of microstructural features, phase composition, and magnetic characteristics of YBCO-based composites and additives of CuO non-superconducting component prepared in low-pressure arc discharge plasma [Текст] / I. V. Karpov, A. V. Ushakov, A. A. Lepeshev [et al.] // Inorg. Mater.: Appl. Res. - 2021. - Vol. 12 Is. 1.- P.142-146

Держатели документа:
Институт физики им. Л. В. Киренского СО РАН
Сибирский федеральный университет
Федеральный исследовательский центр «Красноярский научный центр Сибирского отделения РАН»

Доп.точки доступа:
Карпов, И. В.; Ушаков, А. В.; Лепешев, Анатолий Александрович; Дёмин, В. Г.; Федоров, Л. Ю.; Гончарова, Е. А.; Зеер, Г. М.; Жарков, Сергей Михайлович; Zharkov, S. M.; Абкарян, А. К.
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    Дрокин, Николай Александрович.
    Полимерные композиты с углеродными нанотрубками, получение диагностика методом импеданса / Н. А. Дрокин, Г. Е. Селютин, И. А. Маркевич // Изв. вузов. Физика. - 2015. - Т. 58, № 8/2. - С. 72-74. - Библиогр.: 2. - Работа выполнена в рамках государственного задания Минобрнауки РФ № 2.914.2014/K, при поддержке «Красноярского краевого фонда поддержки научной и научно-технической деятельности» проект №8, и проекта II.12.1.1 СО РАН . - ISSN 0021-3411
   Перевод заглавия: Polymer composites with carbon nanotubes, preparationand diagnostics using impedance method
Кл.слова (ненормированные):
полимерные композиты -- проводимость -- диэлектрическая проницаемость -- импеданс -- polymer composites -- conductivity -- permittivity -- impedance
Аннотация: В работе изучены композиционные материалы на основе сверхвысокомолекулярного полиэтилена (СВМПЭ) и многостенных углеродных нанотрубок (МУНТ), полученные в органическом растворителе с исполь- зованием ультразвука. Измерения диэлектрической проницаемости, проводимости и тангенса потерь проводили в диапазоне частот 1 Гц – 100 МГц по методике измерения полного комплексного сопротивления (импеданса) и на частотах 1–3 ГГц резонансным методом.
In the work the composite materials based on ultra high molecular weight polyethylene (UHMWPE) and multiwalled carbon nanotubes (MWCNT) have been studied. Nanotubes were introduced in polyethylene using a solution of oxylene and ultrasound with energy of 100 W/cm2. For estimation the degree of carbon nanotube dispersion in polyme rmatrices and diagnostics of electro-physics parameters of composites, а special method of high frequency impedance measurement was used.

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

Доп.точки доступа:
Селютин, Г. Е.; Selyutin, G. E.; Маркевич, И. А.; Markevich, I. A.; Drokin, N. A.
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    Understanding the energy barriers of the reversible ion exchange process in CsPbBr1.5Cl1.5@Y2O3:Eu3+ macroporous composites and their application in anti-counterfeiting codes / M. Li, Y. Zhao, S. Zhang [et al.] // ACS Appl. Mater. Interfaces. - 2021. - Vol. 13, Is. 50. - P. 60362-60372, DOI 10.1021/acsami.1c18030. - Cited References: 49. - This work is financially jointly supported by the Guangzhou Science & Technology Project (202007020005), NSFC (Grant No. 51772104), the Fundamental Research Funds for the Central Universities (2020ZYGXZR096), Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137), and RFBR according to the research project No. 19-52-80003 . - ISSN 1944-8244
   Перевод заглавия: Понимание энергетических барьеров процесса обратимого ионного обмена в макропористых композитах CsPbBr1.5Cl1.5@Y2O3: Eu3 + и их применение в кодах защиты от подделок
Кл.слова (ненормированные):
mixed-halide CsPbX3NCs -- macroporous Y2O3:Eu3+ -- energy barriers -- photoinduced ion exchange -- anti-counterfeiting codes
Аннотация: The photoinduced reversible ion exchanges in mixed halide perovskites and the resulting luminescent variations make them promising for constructing anti-counterfeiting patterns; however, its understanding in an interfacial view is lacking. In this work, nominal CsPbBr1.5Cl1.5 (CPBC) nanocrystals (NCs) were introduced into macroporous Y2O3:Eu3+ (MYE) to realize emission color variations from red emission of MYE to green emission of halide NCs. The large surface area of MYE helps the formation of Y–Cl/Br bonds which induces fluctuation in the halide composition, while water and intrinsic halogen defects have also been proved to be essential in the reversible ion segregation process. The PL variations of several samples with different pore sizes were investigated upon irradiation of light with different photon energies and excitation power at certain temperatures. According to combined results of density functional theory calculation, the research reveals the presence of two energy barriers that would be overcome correspondingly by the excitation photon and the concentration difference in the ion exchange and recovery process. A photochromic anti-counterfeiting quick response (QR) code was constructed facilely with the perovskite composites. This work provides a deeper understanding from the interfacial aspect and also proposes a feasible strategy to realize reversible PL variation for anti-counterfeiting applications.

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Держатели документа:
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, 510641, China
Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 680021, Russian Federation
Siberian Federal University, Krasnoyarsk, 680021, Russian Federation
Research and Development Department, Kemerovo State University, Kemerovo, 650061, Russian Federation

Доп.точки доступа:
Li, M.; Zhao, Y.; Zhang, S.; Yang, R.; Qiu, W.; Wang, P.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ye, S.
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Transport properties of HTSC-based composites: Modeling the random networks of Josephson weak links with magneto-active barriers. / K. A. Shaihutdinov [et al.] // J. Low Temp. Phys. - 2003. - Vol. 130, Is. 3-4. - P. 347-381, DOI 10.1023/A:1022204705059. - Cited References: 89 . - ISSN 0022-2291

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
CURRENT-VOLTAGE CHARACTERISTICS
   HIGH-TEMPERATURE SUPERCONDUCTORS
   SNS JUNCTIONS
   THERMAL FLUCTUATIONS
   RESISTIVE PROPERTIES
   PERCOLATION SYSTEM
   TRANSITION
   YBA2CU3O7
   BOUNDARY
   OXIDES
Кл.слова (ненормированные):
Crystalline materials -- Electric insulators -- Josephson junction devices -- Magnetic devices -- Magnetic barriers -- Superconducting materials -- composite
Аннотация: The results of the study of transport properties (temperature dependences of resistivity and critical current, current-voltage characteristics) of two-phase composites on the basis of Y3/4Lu1/4Ba2Cu3O7 high-temperature superconductor (HTSC) produced by fast baking technique and modelling networks of Josephson-type weak links are reported. Non-superconducting ingredients with different magnetic structures, insulators and normal metals, function as barriers between HTSC crystallites. Besides strong suppression of superconducting properties in HTSC composites with magnetic barriers, anomalous behavior of temperature dependences of resistivity below T-c of HTSC grains have been observed and investigated.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Krasnoyarsk 660036, Russian Federation
Reshetnev Siberian St. Aerosp. Univ., Krasnoyarsk 660014, Russian Federation
Krasnoyarsk State University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Shaihutdinov, K. A.; Balaev, D. A.; Балаев, Дмитрий Александрович; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Popkov, S. I.; Попков, Сергей Иванович; Petrov, M. I.; Петров, Михаил Иванович; NATO Advanced Research Workshop on Vortex Dynamics in High-Temperature Superconductors(2002 ; May ; 17-22)
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Transport properties of HTSC plus Ba(Pb, Met)O-3 composites as functions of the electrical and magnetic characteristics of nonsuperconducting components / M. I. Petrov [et al.] // Phys. Solid State. - 2000. - Vol. 42, Is. 5. - P. 810-815, DOI 10.1134/1.1131294. - Cited References: 27 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTORS
   CURRENT-VOLTAGE CHARACTERISTICS
   NORMAL-METAL LAYER
   WEAK LINKS
   JUNCTIONS
   SCATTERING
   BAPB1-XBIXO3
   TRANSITION
   IMPURITIES
   BREAKING
Аннотация: Composites simulating a network of weak metallic links and consisting of a classic 1-2-3 HTSC and a BaPbO3 metal oxide with incorporated Sn, Ni, and Fe impurities have been prepared. Experimental resistivity, magnetic, and Mossbauer studies of the BaPb(0.9)Met(0.1)O(3) nonsuperconducting components are presented. The transport properties of the HTSC + BaPb(0.9)Met(0.1)O(3) composites have been investigated. The superconducting properties of the composites are observed to be suppressed, both when the carrier mean free path in nonsuperconducting components with tin impurities decreases, and as a result of an additional interaction of the magnetic moments of (Fe, Ni) impurities with the spins of supercurrent carriers. The experimental temperature dependences of the composite critical current are analyzed in terms of the de Gennes theory for the superconductor-normal metal-superconductor structures. (C) 2000 MAIK "Nauka/Interperiodica".

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

Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Ospishchev, S. V.; Оспищев С. В.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
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Transport properties of high-temperature superconductor plus semiconductor composites with different carrier concentration / M. I. Petrov [et al.] // Phys. Solid State. - 1997. - Vol. 39, Is. 5. - P. 735-740, DOI 10.1134/1.1129959. - Cited References: 26 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CRITICAL CURRENTS
WEAK LINKS
JUNCTIONS
Аннотация: Results are presented of an experimental study of the temperature dependence of the electrical resistivity rho(T), critical current density J(c)(T), and current-voltage characteristics of polycrystalline composites based on the high-temperature superconductor Y3/4Lu1/4Ba2Cu3O7 and copper oxide with different lithium doping levels. The experimental temperature dependence of the critical current of composites with varying volume content of the semiconductor ingredient and varying charge carrier concentration are found to be in qualitative agreement with theory which takes account of Andreev reflection of the carriers at the S-Sm and Sm-S surfaces of the S-Sm-S Josephson junction (where S is the superconductor and Sm is the semiconductor). (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; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Khrustalev, B. P.; Хрусталев, Борис Петрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
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Transport properties of high-temperature superconductor + semiconductor composites with different carrier concentration / M. I. Petrov [et al.] // Physics of the Solid State. - 1997. - Vol. 39, Is. 5. - P. 735-740 . - ISSN 1063-7834
Аннотация: Results are presented of an experimental study of the temperature dependence of the electrical resistivity p(T), critical current density Jc(T), and current-voltage characteristics of polycrystalline composites based on the high-temperature superconductor Y3/4Lu1/4Ba2Cu3O7 and copper oxide with different lithium doping levels. The experimental temperature dependence of the critical current of composites with varying volume content of the semiconductor ingredient and varying charge carrier concentration are found to be in qualitative agreement with theory which takes account of Andreev reflection of the carriers at the S-Sm and Sm-S surfaces of the S-Sm-S Josephson junction (where S is the superconductor and Sm is the semiconductor). В© 1997 American Institute of Physics.

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Доп.точки доступа:
Петров, Михаил Иванович; Petrov, M. I.; Balaev, D. A.; Балаев, Дмитрий Александрович; Шайхутдинов, Кирилл Александрович; Shaikhutdinov, K. A.; Khrustalev, B. P.; Хрусталев, Борис Петрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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Transport properties of composites high temperature superconductor + semiconductor with different carrier concentration / M. I. Petrov [et al.] // Physica C-Superconductivity and its Applications. - 1997. - Vol. 282, Is. PART 4. - P. 2449-2450 . - ISSN 0921-4534
Кл.слова (ненормированные):
Carrier concentration -- Critical current density (superconductivity) -- High temperature superconductors -- Semiconductor materials -- Thermal effects -- Transport properties -- Superconductor semiconductor superconductor junctions -- Composite materials
Аннотация: Composites HTSC + semiconductor with different carrier concentrations were prepared as a model of Josephson type contacts. Experimental temperature dependences of the critical current density Jc(T) in the composites are presented. The best congruence of experiment with theory was reached for the Schussler-Kummel consideration of Andreev scattering in S-Sm-S (S-superconductor, Sm-semiconductor) junctions.

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Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Khrustalev, B. P.; Хрусталев, Борис Петрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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10.

Transport and magnetic properties of Y3/4Lu1/4Ba2Cu3O7+Y3Fe5O12 composites representing a Josephson-type superconductor-ferrimagnet-superconductor weak-link network / K. A. Shaikhutdinov [et al.] // Phys. Solid State. - 2003. - Vol. 45, Is. 10. - P. 1866-1873, DOI 10.1134/1.1620087. - Cited References: 36 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
RESISTIVE PROPERTIES
   JUNCTION NETWORK
   SYSTEM
   TRANSITION
   CURRENTS
   VOLTAGE
   STATE
   FIELD
Аннотация: Y3/4Lu1/4Ba2Cu3O7 + Y3Fe5O12 composites with different volume ratios of the starting components were synthesized. The composites model an S-F-S Josephson junction network, where S stands for a superconductor and F, for a ferrimagnet. A study of the transport characteristics of the composites revealed that the temperature behavior of the electrical resistivity rho(T) below the superconducting transition point T-C is different in two regions separated by a temperature T-m. Below T-m, the current-voltage characteristics of the composites are nonlinear, while in the interval from T-C to T-m the values of rho(T) do not depend on the transport current j and magnetic field H. This behavior of rho(T, j ) and rho(T, H) is assigned to specific features of the tunneling of superconducting carriers through the ferrimagnetic layers separating HTSC grains in the composite. Magnetic measurements showed the diamagnetic response of HTSC grains to be lower in composites with a ferrimagnet. (C) 2003 MAIK "Nauka / Interperiodica".

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

Доп.точки доступа:
Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Petrov, M. I.; Петров, Михаил Иванович
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11.

Transport and magnetic phenomena in ZnO-С thin-film heterostructures / M. N. Volochaev, A. B. Granovsky, O. V. Zhilova [et al.] // Superlattices Microstruct. - 2020. - Vol. 140. - Ст. 106449, DOI 10.1016/j.spmi.2020.106449. - Cited References: 36. - The work was supported by the Ministry of Education and Science of Russia (project No. 3.1867.2017/4.6 ) and the RFBR (project No. 19-07-00471). The work was partially funded by the Academy of Finland . - ISSN 0749-6036
Кл.слова (ненормированные):
Zinc oxide -- Amorphous carbon -- Multi-layered structures -- Composites -- Hopping conductivity -- Weak localization -- Magnetoresistance
Аннотация: ZnO- and C-based heterostructures were fabricated by the layer-by-layer deposition technique using the ion-beam sputtering process. Structure, electrical and magnetic properties of fabricated heterostructures are discussed. The two-phase (ZnO and C) films are evolved into a multilayer structure, consisting of amorphous carbon and crystalline ZnO layers when the bilayer thickness increases. When carbon is added to ZnO, its electrical resistivity reduces. The conduction mechanism changes from the variable-range hopping in a narrow energy band to the nearest neighbors hopping in ZnO–C films with a thickness of h ˂ 150 nm. The temperature dependence of conductivity changes from the Arrhenius-like to logarithmic law, indicating that the strong charge localization turns into a weak one when the film thickness is about 150 nm. The negative magnetoresistance of up to 1% was detected at 77 K. The film ferromagnetism at the temperature of 10 K was not found.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk660036, Russian Federation
Lomonosov Moscow State University, Moscow119991, Russian Federation
Voronezh State Technical University, Voronezh394026, Russian Federation
National Research Centre ‘‘Kurchatov Institute”, Moscow123182, Russian Federation
Voronezh State University, Voronezh394003, Russian Federation
Lappeenranta-Lahti University of Technology, Lappeenranta FI53851, Finland

Доп.точки доступа:
Volochaev, M. N.; Волочаев, Михаил Николаевич; Granovsky, A. B.; Zhilova, O. V.; Kalinin, Y. E.; Ryl'kov, V. V.; Sumets, M. P.; Makagonov, V. A.; Pankov, S. Y.; Sitnikov, A. V.; Fadeev, E.; Lahderanta, E.; Foshin, V.
}
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12.

Time relaxation of residual resistance of HTSC-based composites / D. A. Balaev [et al.] // Physica C-Superconductivity and its Applications. - 2007. - Т.460-462 II, spec. iss. - P. 1309-1310, DOI 10.1016/j.physc.2007.03.347 . - ISSN 0921-4534

РИНЦ
Держатели документа:
Kirensky Institute of Physics

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Popkov, S. I.; Попков, Сергей Иванович; Petrov, M. I.; Петров, Михаил Иванович
}
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13.

Time relaxation of residual resistance of HTSC-based composites / D. A. Balaev [et al.] // Physica C. - 2007. - Vol. 460: 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (JUL 09-14, 2006, Dresden, GERMANY). - P. 1309-1310, DOI 10.1016/j.physc.2007.03.347. - Cited References: 5 . - ISSN 0921-4534

РУБ Physics, Applied
Рубрики:
SUPERCONDUCTORS
Кл.слова (ненормированные):
granular HTSC -- resistance -- relaxation -- magnetic flux -- Granular HTSC -- Magnetic flux -- Relaxation -- Resistance -- Copper oxides -- Crystallites -- Magnetic flux -- Magnetic relaxation -- Magnetization -- Yttrium barium copper oxides -- Anderson-like relaxation processes -- Flux trapping -- Residual resistance -- Time relaxation -- Josephson junction devices
Аннотация: Magnetoresistance curves R(H) and time relaxation of the residual resistance of bulk YBCO + CuO composites have been studied. These composites represent the network of Josephson junctions, where CuO acts as a barrier between YBCO grains. It has been shown that hysteresis of the R(H) dependences is related to the flux trapping within the YBCO crystallites. This flux induces magnetic field in the intergrain media. Time relaxation of the residual resistance is caused by relaxation of the magnetization of YBCO grains. The time dependence of the residual resistance obeys a logarithmic law, which describes the Anderson-like relaxation processes in the YBCO grains. (c) 2007 Elsevier B.V. All rights reserved.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Popkov, S. I.; Попков, Сергей Иванович; Petrov, M. I.; Петров, Михаил Иванович
}
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14.

Thermally activated phase slippage in composites HTSC + CuO / M. I. Petrov [et al.] // Physica C-Superconductivity and its Applications. - 1997. - Vol. 282, Is. PART 4. - P. 2453-2454 . - ISSN 0921-4534
Кл.слова (ненормированные):
Copper oxides -- Critical currents -- Thermal effects -- Thermally activated phase slippage (TAPS) -- High temperature superconductors
Аннотация: The effect of thermally activated phase slippage (TAPS) in composites HTSC + CuO has been studied. The experimental ?(T) dependences have been treated within framework of TAPS using temperature dependences of critical current for tunnel S-I-S junctions.

Scopus

Доп.точки доступа:
Петров, Михаил Иванович; Petrov, M. I.; Balaev, D. A.; Балаев, Дмитрий Александрович; Шайхутдинов, Кирилл Александрович; Shaikhutdinov, K. A.; Khrustalev, B. P.; Хрусталев, Борис Петрович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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15.

The research of powder fullerene and ultra-despersed diamond composites with metal and oxide nanoparicles [Text] / V. G. Isakova, E. A. Petrakovskaya, V. P. Isakov [и др.] // The Physics of Metals and Metallography. - 2006. - Vol. 102, Suppl.1. - S57-S60DOI 10.1134/S0031918X06140146. - Библиогр.: 7
Аннотация: Magnetic properties of new nanophase materials based on oxide and metal particles of dtransition metals included in the powder fullerite C60 and detonative ultradispersed diamonds (UDD) are investigated. The materials are obtained by an original method of catalytic combustion reaction.

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Держатели документа:
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia
Krasnoyarsk State University, Krasnoyarsk, 660041 Russia

Доп.точки доступа:
Isakova, V. G.; Исакова, Виктория Гавриловна; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Isakov, V. P.; Bayukov, O. A.; Баюков, Олег Артемьевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
}
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16.

The mechanisms responsible for broadening of the resistive transition under magnetic field in the Josephson junction network realized in bulk YBCO+CuO composites / D. A. Balaev [et al.] // Physica C. - 2006. - Vol. 435, Is. 1-2. - P. 12-15, DOI 10.1016/j.physc.2006.01.008. - Cited References: 15 . - ISSN 0921-4534

РУБ Physics, Applied
Рубрики:
SUPERCONDUCTORS
MODEL
Кл.слова (ненормированные):
Josephson network -- YBCO plus CuO composites -- dissipation -- magnetic field -- Dissipation -- Josephson network -- Magnetic field -- YBCO + CuO composites -- Composite materials -- Copper compounds -- Mathematical models -- Phase transitions -- Semiconductor junctions -- Yttrium compounds -- Creep model -- Josephson network -- YBCO + CuO composites -- Magnetic field effects
Аннотация: The experimental results of the effect of the magnetic field (up to 60 kOe) on the broadening of the resistive transition of bulk composites Y3/4Lu1/4Ba2CU3O7 (YBCO) + CuO are presented. These composites represent the network of the tunnel-type Josephson junctions where the copper oxide acts as a material forming barriers between YBCO crystallites. The mechanisms responsible for broadening of the resistive transition under magnetic field are discussed. The analysis of experimental R(7) dependences have shown that in the low field range 0-10(2) Oe, the R(7) dependences are described well by the Ambegaokar-Halperin (AH) model. In the range 10(3)-6 x 10(4) Oe, the dissipation follows Arrhenius law R similar to exp(-U(H)/k(B)T) characteristic for thermally activated flux creep model. In the range H similar to 10(2)-10(3), the crossover from AH to flux creep dissipation mechanisms occurs. (c) 2006 Elsevier B.V. All rights reserved.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Shaihutdinov, K. A.; Petrov, M. I.; Петров, Михаил Иванович; International Workshop on Weak Superconductivity(2005 ; Sept. ; 16-19 ; Bratislava, Slovakia)
}
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17.

The Influence of CuO Dopant Nanoparticles, Prepared via the Arc Plasma Synthesis Method, on the Critical Current of YBa2Cu3O7–δ Composites / A. V. Ushakov [et al.] // Inorg. Mater.: Appl. Res. - 2019. - Vol. 10, Is. 4. - P. 999-1002, DOI 10.1134/S2075113319040439. - Cited References: 13. - This work was supported by the Russian Science Foundation (project no. 16-19-10054). . - ISSN 2075-1133
Кл.слова (ненормированные):
nanodispersed powder -- high-temperature superconductor -- copper oxide -- vacuum arc
Аннотация: YBa2Cu3O7 – δ–CuO composites with CuO particle contents of 0.5, 1.0, 2.0, 5.0, 10, 15, 20, and 24% were produced via arc plasma synthesis. Their magnetic properties were analyzed in the context of the expanded critical state model. In comparison with a reference sample, the critical current intragranular density increased in composites with CuO concentrations of 0.5, 1, 20, and 24%. The mechanisms of the influence of nanodopants on the change in the critical current density at various volume contents of nano-CuO were proposed as well.

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Публикация на русском языке Влияние добавок наночастиц CuO плазменно-дугового синтеза на критический ток сверхпроводника YBa2Cu3O7-δ [Текст] / А. В. Ушаков [и др.] // Материаловедение. - 2019. - № 2. - С. 34-37

Держатели документа:
Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Ushakov, A. V.; Karpov, I. V.; Lepeshev, A. A.; Petrov, M. I.; Петров, Михаил Иванович; Fedorov, L. Y.; Gokhfel'd, D. M.; Гохфельд, Денис Михайлович; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Demin, V. G.; Abkaryan, A. K.
}
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18.

The examination of frequency dependences of elastic waves velocities and their attenuation in heterogeneous mediums / P. P. Turchin [et al.] // Proceedings - IEEE Ultrasonics Symposium. - 2007. - Ст. 4409985. - P. 1637-1640, DOI 10.1109/ULTSYM.2007.412 . - ISBN 1051. - ISBN 1424413834; 9781424413836
Кл.слова (ненормированные):
Automation of measurings -- Ceramics -- Composites -- Elastic properties -- Physical acoustics -- Sound signal attenuation -- Elastic waves -- Elasticity -- Waves -- Automation of measurings -- Ceramics -- Composites -- Elastic properties -- Frequency dependences -- Frequency ranging -- Physical acoustics -- Sound signal attenuation -- Ultrasonics
Аннотация: The pulse - phase method for examination of ultrasonic waves propagation in materials, including mediums with high attenuation of a sound was designed. By automation methods of measurings the opportunity of determination the elastic waves velocities with an frequency range 100 kHz - 30 MHz with the resolution on frequency of 10-6 Hz is implemented. The phase method and a method of the frequency strobing for recording impulses are realized. These methods allow to define with precision not worse than 10-9 second the time of ultrasonic waves propagation. Requirements to the minimum linear dimensions of samples are restricted by the method sensitivity only. Velocities of elastic waves and their signal attenuation in ceramic and composites are measured. В© 2007 IEEE.

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Доп.точки доступа:
Turchin, P. P.; Parfenov, A. A.; Beletsky Jun, V. V.; Volzhentcev, A. A.; Ruzanov, V. M.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; IEEE International Ultrasonics symposium(2007 ; Oct. ; 28-31 ; New York, USA)
}
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19.

The effect of paramagnetic impurities in normal metal on the critical current in a network of S-N-S Josephson junctions in bulk Y3/4Lu1/4Ba2Cu3O7+BaPb(1-x)Fe(x)O(3)composites / D. A. Balaev [et al.] // Supercond. Sci. Technol. - 2003. - Vol. 16, Is. 1. - P. 60-64, DOI 10.1088/0953-2048/16/1/311. - Cited References: 41 . - ISSN 0953-2048

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
CURRENT-VOLTAGE CHARACTERISTICS
   WEAK LINKS
   RESISTIVE PROPERTIES
   MAGNETIC-IMPURITIES
   EXCHANGE FIELD
   SNS JUNCTIONS
   F-S
   COMPOSITES
   SUPERCONDUCTOR
   SCATTERING
Кл.слова (ненормированные):
Critical currents -- Interfaces (materials) -- Josephson junction devices -- Paramagnetism -- Transport properties -- Non-superconducting ingredient -- Paramagnetic impurities -- Superconductor normal metal superconductor -- Oxide superconductors
Аннотация: Bulk Y3/4Lu1/4Ba2Cu3O7 + BaPb1-xFexO3 composites representing a model of a network of superconductor-normal metal-superconductor (SNS) Josephson junctions with paramagnetic impurities (Fe) in the N layers have been prepared. The transport properties of the composites have been studied. An exponential decay of the critical current with increasing Fe content in the non-superconducting ingredient of the composite has been observed. Such a behaviour is accounted for in terms of the de Gennes proximity effect theory.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Ospishchev, S. V.; Petrov, M. I.; Петров, Михаил Иванович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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20.

The effect of nonmagnetic and magnetic impurities in the normal metal layer - N of network of weak S-N-S junctions in composites on high temperature superconductors basis / M. I. Petrov [et al.] // Physica C-Superconductivity and its Applications. - 1997. - Vol. 282, Is. PART 4. - P. 2447-2448 . - ISSN 0921-4534
Кл.слова (ненормированные):
Charge carriers -- Composite materials -- Electric currents -- High temperature superconductors -- Impurities -- Magnetic materials -- Transport properties -- Superconducting normal metal superconducting junctions -- Superconducting devices
Аннотация: Composites HTSC + normal metal with magnetic and nonmagnetic impurities have been prepared. Transport properties of these composites have been studied. Supercurrent in the composites is weakened by magnetic impurities in greater degree than by nonmagnetic ones. It indicates that carriers in HTSC with 1-2-3 structure are mostly the conventional singlet pairs.

Scopus

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