Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=Percolation<.>)

Общее количество найденных документов : 8
Показаны документы с 1 по 8

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.

Смотреть статью,
Scopus,
WoS,
Читать в сети ИФ

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
}
Найти похожие

Relaxation of low-temperature magnetoresistance and magnetization of polycrystalline (La0.5Eu0.5)(0.7)Pb0.3MnO3 / K. A. Shaykhutdinov [et al.] // J. Phys. D. - 2011. - Vol. 44, Is. 25. - Ст. 255001, DOI 10.1088/0022-3727/44/25/255001. - Cited References: 34. - This work was partially supported by the Lavrentyev Competition of the Young Scientist's Projects of the Siberian Branch of the Russian Academy of Sciences, Project No 12. The authors are grateful to A D Balaev and V M Sosnin for useful discussions on the results. . - ISSN 0022-3727

РУБ Physics, Applied
Рубрики:
INSULATOR-METAL TRANSITION
   GRANULAR FILMS
   NANOPARTICLES
   PR0.7CA0.3MNO3
   PERCOLATION
   MANGANITES
Кл.слова (ненормированные):
Antiferromagnetic boundaries -- Characteristic value -- Ferromagnetic domains -- Ferromagnetic metal -- Lanthanum manganites -- Logarithmic law -- Low temperatures -- Magneto-resistive effect -- Polycrystalline -- Relative orientation -- Relaxation of magnetization -- Temperature fluctuation -- Time evolutions -- Time interval -- Tunnel magnetoresistance -- Antiferromagnetism -- Electric resistance -- Europium -- Ferromagnetic materials -- Ferromagnetism -- Grain boundaries -- Grain size and shape -- Lanthanum compounds -- Lead -- Magnetic domains -- Magnetic moments -- Magnetoelectronics -- Magnetoresistance -- Manganese oxide -- Magnetization
Аннотация: Hysteresis and relaxation of magnetoresistance and magnetization of substituted (La0.5Eu0.5)(0.7)Pb0.3MnO3 lanthanum manganite in a low-temperature region (< 40 K) are investigated. It is shown that at these temperature features of the magnetoresistive effect are determined mainly by spin-dependent tunnelling of carriers via insulating grain boundaries. As was demonstrated previously, the grain boundaries may be antiferromagnetically ordered. Therefore, relaxation of magnetization and resistance is determined by the processes of relative orientation of the magnetic moments of ferromagnetic domains neighbouring the antiferromagnetic boundary of ferromagnetic domains under the action of temperature fluctuations. It is shown that relaxation follows the logarithmic law within the time interval t similar to 10(2)-3x10(3) s. A comparison between time evolutions of the magnetic moment and resistance shows that magnetoresistance and magnetization are related as delta R = delta M-n, where n = 2.5. The obtained value n is close to the characteristic value n = 2 for tunnel magnetoresistance of granular ferromagnetic metal/insulator systems.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
[Shaykhutdinov, K. A.
Balaev, D. A.
Semenov, S. V.
Popkov, S. I.
Dubrovskiy, A. A.
Sapronova, N. V.
Volkov, N. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семенов, Сергей Васильевич; Popkov, S. I.; Попков, Сергей Иванович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Sapronova, N. V.; Volkov, N. V.; Волков, Никита Валентинович
}
Найти похожие

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.

WOS,
Scopus,
Читать в сети ИФ
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)
}
Найти похожие

Study of current-voltage characteristics of Bi-based high-temperature superconductors with fractal cluster structure / K. A. Shaykhutdinov [et al.] // Physica C. - 2006. - Vol. 435, Is. 1-2. - P. 19-22, DOI 10.1016/j.physc.2006.01.010. - Cited References: 18 . - ISSN 0921-4534

РУБ Physics, Applied
Рубрики:
NORMAL-PHASE
VORTEX MOTION
TRANSPORT
Кл.слова (ненормированные):
superconducting foam -- pinning -- critical current density -- fractal -- percolation -- cluster -- Cluster -- Critical current density -- Fractal -- Percolation -- Pinning -- Superconducting foam -- Bismuth -- Critical current density (superconductivity) -- Electric currents -- Electric potential -- Foams -- Percolation (solid state) -- Polycrystalline materials -- Cluster -- Fractal -- Pinning -- Superconducting foam -- Superconducting materials
Аннотация: We study the effect of the structure on critical currents and current-voltage characteristics (CVC's) of foamed bismuth-based polycrystalline high-temperature superconductors (HTSC). The fractal cluster structure of superconducting foams has been observed and the fractal dimension of boundaries between superconducting and normal clusters has been determined. Based on the magnetic and transport properties of the foamed polycrystalline superconductors, we have shown that the initial parts of CVC's of the superconducting foams are described well by the model that accounts the magnetic flux trapping in fractal clusters of a normal phase. (c) 2006 Elsevier B.V. All rights reserved.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036 Akademgorodok, Krasnoyarsk, Russian Federation
Ioffe Physical-Technical Institute, 194021 Polytechnicheskaya St., 26, St.-Petersburg, Russian Federation

Доп.точки доступа:
Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Kuzmin, Y. I.; Popkov, S. I.; Попков, Сергей Иванович; Petrov, M. I.; Петров, Михаил Иванович; International Workshop on Weak Superconductivity(2005 ; Sept. ; 16-19 ; Bratislava, Slovakia)
}
Найти похожие

Magnetic anisotropy in multilayer nanogranular films (Co40Fe40B20)50(SiO2)50/α-Si:H / E. A. Denisova [et al.] // J. Magn. Magn. Mater. - 2017. - Vol. 440: EURO-Asian Symposium on Trends in Magnetism (EASTMAG) (AUG 15-19, 2016, Siberian Fed Univ, Krasnoyarsk, RUSSIA). - P. 221-224, DOI 10.1016/j.jmmm.2016.12.052. - Cited References:26. - This work was supported by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project. 1542-04171 and Russian Foundation for Basic Research 15-0806673, 16-03-00256, 16-03-00969. . - ISSN 0304-8853. - ISSN 1873-4766

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
PERCOLATION-THRESHOLD
THIN-FILMS
NANOCRYSTALLINE MATERIALS
Аннотация: Macroscopic and local magnetic anisotropy of [CoFeB-SiO2/α-Si:H]60 multilayer films was studied in comparison with that for the thick CoFeB-SiO2 granular films. The volume fraction of magnetic component Co40Fe40B20 is ranged from 0.34 to 0.70. In the multilayer films the magnetic layer and silicon spacer thicknesses are 2.5÷4.5 nm and 3.5 nm correspondingly. The magnetization curves and ferromagnetic resonance measurements were used to determining magnetic anisotropy energy constants. The main contribution to the local magnetic anisotropy energy constant is found to be from surface magnetic anisotropy of magnetic granules. It is found that the magnetic percolation point of multilayer films (XC~40) is shifted in comparison with that in granular films (XC~30). Surface magnetic anisotropy energy constants of multilayer films with different X evaluated from the surface modes of spin-wave resonance are in the range 0.5 Ks 0.9 erg/cm2.

Смотреть статью,
WOS,
Читать в сети ИФ

Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Chekanova, L. A.; Чеканова, Лидия Александровна; Balaev, A. D.; Балаев, Александр Дмитриевич; Kalinin, Yu. E.; Sitnikov, A. V.; Russian Foundation for Basic Research [15-0806673, 16-03-00256, 16-03-00969]; Government of Krasnoyarsk Territory; Krasnoyarsk Region Science and Technology Support Fund [1542-04171]; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН
}
Найти похожие

Exchange percolation effects in magnetization curves of granular nanolayer / V. A. Felk [и др.] // Moscow Int. Symp. on Magnet. (MISM-2017) : 1-7 July 2017 : book of abstracts. - 2017. - Ст. 2PO-J-31. - P. 284. - Cited References: 2

Материалы конференции,
Читать в сети ИФ

Доп.точки доступа:
Felk, V. A.; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Shadrina, G. V.; Moscow International Symposium on Magnetism(7 ; 2017 ; Jul. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
}
Найти похожие

Gokhfeld, D. M.
Highly Porous Superconductors: Synthesis, Research, and Prospects / D. M. Gokhfeld, M. R. Koblischka, A. Koblischka-Veneva // Phys. Metals Metallogr. - 2020. - Vol. 121, Is. 10. - P. 936-948, DOI 10.1134/S0031918X20100051. - Cited References: 146 . - ISSN 0031-918X. - ISSN 1555-6190

РУБ Metallurgy & Metallurgical Engineering
Рубрики:
HIGH-T-C
CRITICAL-CURRENT DENSITY
HIGH-TEMPERATURE SUPERCONDUCTORS
Кл.слова (ненормированные):
YBCO -- Bi2223 -- Bi2212 -- MgB2 -- synthesis -- porosity -- foam -- polycrystal -- fabric -- sponge -- pinning -- critical current -- percolation -- magnetization
Аннотация: This paper presents a review of studies of superconductors with a porosity above 50%. The pores in such superconducting materials allow refrigerant penetration and provide efficient heat dissipation and stable operation. Methods for the synthesis of the main groups of porous superconductors are described. The results of studies of the structural, magnetic, and electrical transport properties are presented, and the features of the current flow through porous superconductors of various types are considered. The directions of further development and application of porous superconductors are presented.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

Публикация на русском языке Гохфельд, Денис Михайлович. Высокопористые сверхпроводники: синтез, исследования и перспективы [Текст] / Д. М. Гохфельд, М. Р. Коблишка, А. Коблишка-Венева // Физ. металлов и металловед. - 2020. - Т. 121 № 10. - С. 1026-1038

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Shibura Inst Technol, Dept Mat Sci & Engn, Lab Superconducting Mat, Tokyo 1358548, Japan.

Доп.точки доступа:
Koblischka, M. R.; Koblischka-Veneva, A.; Гохфельд, Денис Михайлович
}
Найти похожие

Study of the effect of modified aluminum oxide nanofibers on the properties of PLA-based films / A. Sukhanova, A. Boyandin, N. Ertiletskaya [et al.] // Materials. - 2022. - Vol. 15, Is. 17. - Ст. 6097, DOI 10.3390/ma15176097. - Cited References: 37. - This research was carried out within the state assignment of the Ministry of Science and Higher Education of the Russian Federation for the implementation of the project “Development of multifunctional smart materials and structures based on modified polymer composite materials capable to function in extreme conditions” (project number FEFE-2020-0015) . - ISSN 1996-1944
Кл.слова (ненормированные):
aluminum oxide nanofibers -- percolation threshold -- polylactide -- film -- composite -- thermal and mechanical properties
Аннотация: To find out whether Al2O3 nanofiller is effective in improving the characteristics of polymer composites, composite polymer films based on biodegradable polylactide and epoxidized aluminum oxide nanofibers were obtained by solution casting. Surface morphology, mechanical and thermal properties of composites were studied by SEM, IR-Fourier spectroscopy, DSC and DMA. It was shown that, below and above the percolation threshold, the properties of the films differ significantly. The inclusion of alumina nanoparticles up to 0.2% leads to a plasticizing effect, a decrease in the crystallization temperature and the melting enthalpy and an increase in the tensile stress. An increase in the content of alumina nanoparticles in films above the percolation threshold (0.5%) leads to a decrease in the crystallinity of the films, an increase in stiffness and a drop in elasticity. Finding the percolation threshold of alumina nanoparticles in PLA films makes it possible to control their properties and create materials for various applications. The results of this study may have major significance for the commercial use of aluminum oxide nanofibers and can broaden the research field of composites.

Смотреть статью,
Scopus
Держатели документа:
Scientific Laboratory “Smart Materials and Structures”, Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy Av, Krasnoyarsk, 660037, Russian Federation
Institute of Biophysics, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Department of Molecular Electronics, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
School of Engineering and Construction, Siberian Federal University, 82K Svobodnyi Av, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 79 Svobodnyi Av, Krasnoyarsk, 660041, Russian Federation
Insitute of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Sukhanova, A.; Boyandin, A. N.; Ertiletskaya, N.; Simunin, M.; Shalygina, T.; Voronin, A.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Nemtsev, I.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Pyatina, S.
}
Найти похожие