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1.
Flux creep after
field trapping in YBa2Cu3Ox foams / M. R. Koblischka, S. Pavan Kumar Naik, A. Koblischka-Veneva [et al.]> // Supercond. Sci. Technol. - 2020. -
Vol. 33
,
Is. 4
. - Ст. 044008,
DOI
10.1088/1361-6668/ab72c3. - Cited References: 38. - We thank G Schmitz (ACCESS, Aachen, Germany) for providing us with the
foam
sample, and K Berger, B Douine and Q Nouailhetas (GREEN, Nancy, France) for valuable discussions concerning applications of the superconducting
foam
materials. This work is part of the SUPERFOAM International Project funded by ANR and DFG under references ANR-17-CE05–0030 and DFG-ANR Ko2323–10, respectively . - ISSN 0953-2048
Перевод заглавия:
Крип потока после захвата поля в пенах YBa2Cu3Ox
Кл.слова (ненормированные):
YBCO
--
superconducting
foam
--
flux creep
--
trapped fields
Аннотация:
The time-dependence of the field distribution on the surface of YBa2Cu3O x (YBCO)
foam
samples after field trapping is analysed. The
foam
samples were magnetised using a bulk permanent magnet at 77 K, and the trapped fields (TFs) were recorded with a scanning Hall probe 1 mm above the sample surface. Besides a large TF peak, several small peaks are observed. The time dependence of the local fields of these peaks and of the large peak are clearly different, which points to a different origin. In this way, the time-dependent TF measurements reveal important information about the current flow in the
foam
samples. A non-logarithmic relaxation process takes place in the
foam
samples. Furthermore, we compare these results with classic creep measurements performed on an individual
foam
strut removed from the bulk. The creep rate for the TF distribution is found to be ~8%, whereas the creep rate of the
foam
strut is about 4% in a large temperature and field range (20–60 K, 0–2 T).
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Держатели документа:
Superconducting Materials Laboratory, Department of Materials Science and Engineering, Shibaura Institute of Technology, Tokyo, 135-8548, Japan
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Superconducting Electronics Group, Electronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Central 2, Umezono, Tsukuba, Ibaraki, 305-8568, Japan
Доп.точки доступа:
Koblischka, M. R.; Pavan Kumar Naik, S.; Koblischka-Veneva, A.; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Murakami, M.
}
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2.
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.
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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
}
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3.
High strength ceramic
substrates based on perlite and
foam
silicates for filtration membranes / N. P. Fadeeva, M. V. Pavlov, I. A. Kharchenko [et al.]> // Membr. Membr. Technol. - 2022. -
Vol. 4
,
Is. 3
. - P. 170-176,
DOI
10.1134/S2517751622030040. - Cited References: 32. - The work was performed using the equipment of the Krasnoyarsk Regional Center for Collective Use of the Federal Research Center, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences. This work was partially supported by the Russian Foundation for Basic Research, grant no. 18-29-19078 . - ISSN 2517-7516
Кл.слова (ненормированные):
perlite
--
foam
silicate
--
ceramic membranes
--
substrates
--
water permeability
Аннотация:
Samples of two-layer ceramics based on polydisperse powder of the pearlite mineral and
foam
silicates possessing high compressive strength up to 50 MPa, thermal stability up to 1150°C, and water permeability of 272 m3/h m2 bar have been obtained. According to the X-ray powder diffraction analysis, the supporting substrate material is X-ray amorphous. The average pore size of the supporting substrate is 40 µm, while the average pore size of the modifying layer is 17 µm according to the bubble method and electron microscopy. The obtained materials are promising for use as substrates of microfiltration, ultrafiltration, and nanofiltration membranes.
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Публикация на русском языке
Высокопрочные керамические подложки на основе перлита и пеносиликатов для фильтрационных мембран [Текст] / Н. П. Фадеева, М. В. Павлов, И. А. Харченко [и др.] // Мембраны и мембран. технол. - 2022. - Т. 12 № 3. - С. 192-199
Держатели документа:
Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Specialized Design and Technological Bureau “Nauka” FRC KSC SB RAS, 50/45 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Federal Research Center, Krasnoyarsk Science 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:
Fadeeva, N. P.; Pavlov, M. V.; Kharchenko, I. A.; Харченко, Иван Александрович; Simunin, M. M.; Shabanova, K. A.; Шабанова, К. А.; Pavlov, V. F.; Ryzhkov, I. I.
}
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4.
Hydrodynamic dispersion of
calcium aluminosilicate from technogenic and nonmetallic material / L. V. Kashkina [et al.]> // J. Sib. Fed. Univ. Eng. Technol. - 2014. -
Vol. 7
,
Is. 1
. - P. 3-12 ; Журн. СФУ. Сер. "Техника и технологии"
Перевод заглавия:
Гидродинамическое диспергирование кальций-алюмосиликатных материалов из техногенного и нерудного сырья
Кл.слова (ненормированные):
hydrodynamic dispersion
--
cavitation
--
crystal ceramic
foam
--
porous glass material
--
гидродинамическое диспергирование
--
кавитация
--
зола
--
пеноматериал
--
пористая стеклокерамика
Аннотация:
Physicochemical properties of two calcium aluminosilicate materials after reducing in the hydrodynamic rotary generator in supercavitation mode were studied. The samples are the crystal ceramic
foam
based on Kansko-Achinsk lignite-ash and the porous glass material obtained from low-manganese nonmetallic feed. X-ray phase analysis, EPR-method, NPR-method (the Mossbauer Effect) and optical microscopy were used. It was found that the material is changing its stucrure in a hydrodynamic dispersion process caused by high-cavitation. The nature of the changes depends on its initial state.
Изучены физико-химические свойства двух кальций-алюмосиликатных материалов после измельчения в гидродинамическом генераторе роторного типа в режиме суперкавитации. Исследованы образцы – кристаллическая пенокерамика на основе зол бурых Канско-Ачинских углей и пористый стекломатериал, полученный из нерудного сырья с низким содержанием марганца. Для анализа были использованы методы РФА, ЭМР, ЯГР (эффект Мёссбауэра), оптическая микроскопия. Показано, что в процессе гидродинамического диспергирования за счет высокоэнергетического кавитационного воздействия в материалах происходят глубокие структурные изменения. Получено, что характер изменений зависит от исходного состояния исследуемого материала.
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Держатели документа:
Siberian Federal University, 79 Svobodny, Krasnoyarsk, 660041, Russia
L.V. Kirensky Institute of Physics SB RAS, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russia
Доп.точки доступа:
Kashkina, L. V.; Stebeleva, O. P.; Emelyanova, T. Y.; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Bayukov, O. A.; Баюков, Олег Артемьевич
}
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5.
Magnetization loop and
critical current of porous Bi-based HTS / D. M. Gokhfeld [et al.]> // Physica C. - 2006. -
Vol. 434
,
Is. 2
. - P. 135-137,
DOI
10.1016/j.physc.2005.12.088. - Cited References: 11 . - ISSN 0921-4534
РУБ
Physics, Applied
Рубрики:
SUPERCONDUCTORS
Кл.слова (ненормированные):
porous superconductor
--
critical current
--
bean model
--
foam
--
Bean model
--
Critical current
--
Foam
--
Porous superconductor
--
Hysteresis
--
Magnetization
--
Mathematical models
--
Porous materials
--
Bean model
--
Critical current
--
Foam
--
Porous superconductor
--
Superconductivity
Аннотация:
The magnetization of porous Bi(1.8)Pb(0.3)Sr(2)Ca(2)Cu(3)O(x) has been investigated. The experimental magnetization hysteretic loops of M(H) were described in the frames of Val'kov-Khrustalev model developed for type II granular superconductors. (c) 2005 Elsevier B.V. All rights reserved.
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Держатели документа:
SD RAS, LV Kirensky Phys Inst, High Magnet Fields Lab, Krasnoyarsk 660036, Russia
MF Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
ИФ СО РАН
L.V. Kirensky Institute of Physics SD RAS, High Magnetic Fields Laboratory, Akademgorodok, 50, 660036 Krasnoyarsk, Russian Federation
M.F. Reshetnev Siberian State Aerospace University, 660014 Krasnoyarsk, Russian Federation
Доп.точки доступа:
Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
}
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6.
Microstructural parameters for
modelling of superconducting foams / M. R. Koblischka, A. Koblischka-Veneva, Q. Nouailhetas [et al.]> // Materials. - 2022. -
Vol. 15
,
Is. 6
. - Ст. 2303,
DOI
10.3390/ma15062303. - Cited References: 62 . - ISSN 1996-1944
Кл.слова (ненормированные):
superconducting foams
--
YBCO
--
microstructure
--
modelling parameters
--
foam
cells
--
current flow
Аннотация:
Superconducting YBa2Cu3Oy (YBCO) foams were prepared using commercial open-cell, polyurethane foams as starting material to form ceramic Y2 BaCuO5 foams which are then converted into superconducting YBCO by using the infiltration growth process. For modelling the supercon-ducting and mechanical properties of the
foam
samples, a Kelvin-type cell may be employed as a first approach as reported in the literature for pure polyurethane foams. The results of a first modelling attempt in this direction are presented concerning an estimation of the possible trapped fields (TFs) and are compared to experimental results at 77 K. This simple modelling revealed already useful information concerning the best suited
foam
structure to realize large TF values, but it also became obvious that for various other parameters like magnetostriction, mechanical strength, percolative current flow and the details of the TF distribution, a refined model of a superconducting
foam
sample incorporating the real sample structure must be considered. Thus, a proper description of the specific microstructure of the superconducting YBCO foams is required. To obtain a set of reliable data, YBCO
foam
samples were investigated using optical microscopy, scanning electron microscopy and electron backscatter diffraction (EBSD). A variety of parameters including the size and shape of the cells and windows, the length and shape of the
foam
struts or ligaments and the respective intersection angles were determined to better describe the real
foam
structure. The investigation of the
foam
microstructures revealed not only the differences to the original polymer foams used as base material, but also provided further insights to the infiltration growth process via the large amount of internal surface in a
foam
sample.
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Держатели документа:
Experimental Physics, Saarland University, P.O. Box 151150, Saarbrucken, D-66041, Germany
GREEN, Universite de Lorraine, Nancy, F-54000, France
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Koblischka, M. R.; Koblischka-Veneva, A.; Nouailhetas, Q.; Hajiri, G.; Berger, K.; Douine, B.; Gokhfeld, D. M.; Гохфельд, Денис Михайлович
}
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7.
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.
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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)
}
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8.
Superconducting YBCO Foams
as Trapped Field Magnets / M. R. Koblischka [et al.]> // Materials. - 2019. -
Vol. 12
,
Is. 6
. - Ст. 853,
DOI
10.3390/ma12060853. - Cited References: 62. - This work is part of the SUPERFOAM international project funded by ANR and DFG under the references ANR-17-CE05-0030 and DFG-ANR Ko2323-10, respectively. Further funding by a SIT start-up grant is also gratefully acknowledged. . - ISSN 1996-1944
Перевод заглавия:
Сверхпроводящие YBCO пены в качестве магнитов, действующих благодаря захваченному полю
РУБ
Materials Science, Multidisciplinary
Рубрики:
CRITICAL CURRENT-DENSITY
TRANSPORT-PROPERTIES
SINGLE-GRAIN
BULK
Кл.слова (ненормированные):
High-Tc superconductors
--
YBCO
--
foam
--
trapped fields
--
current flow
Аннотация:
Superconducting foams of YBa2Cu3Oy (YBCO) are proposed as trapped field magnets or supermagnets. The foams with an open-porous structure are light-weight, mechanically strong and can be prepared in large sample sizes. The trapped field distributions were measured using a scanning Hall probe on various sides of an YBCO
foam
sample after field-cooling in a magnetic field of 0.5 T produced by a square Nd-Fe-B permanent magnet. The maximum trapped field (TF) measured is about 400 G (77 K) at the bottom of the sample. Several details of the TF distribution, the current flow and possible applicatons of such superconducting
foam
samples in space applications, e.g., as active elements in flux-pinning docking interfaces (FPDI) or as portable strong magnets to collect debris in space, are outlined.
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Держатели документа:
Shibaura Inst Technol, Dept Mat Sci & Engn, Superconducting Mat Lab, Tokyo 1358548, Japan.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
ACCESS, Intzestr 5, D-52072 Aachen, Germany.
Natl Inst Adv Ind Sci & Technol, Elect & Photon Res Inst, Superconducting Elect Grp, 1-1-1 Cent 2, Tsukuba, Ibaraki 3058568, Japan.
Raychem RPG Pvt Ltd, Aga Abbas Ali Rd Off Halasur Rd, Bangalore 560042, Karnataka, India.
Доп.точки доступа:
Koblischka, Michael R.; Naik, Sugali Pavan Kumar; Koblischka-Veneva, Anjela; Murakami, Masato; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Reddy, Eddula Sudhakar; Schmitz, Georg J.; ANR [ANR-17-CE05-0030]; DFG [DFG-ANR Ko2323-10]; SIT start-up grant
}
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9.
Trapped field in
superconductors with perforations / A. N. Maksimova, V. A. Kashurnikov, A. N. Moroz, D. M. Gokhfeld> // J. Supercond. Nov. Magn. - 2022. -
Vol. 35
,
Is. 1
. - P. 283-290,
DOI
10.1007/s10948-021-06067-7. - Cited References: 35. - The reported study was funded by RFBR and ROSATOM according to the research project No 20-21-00085 (V.A. Kashurnikov, A.N. Moroz) . - ISSN 1557-1939. - ISSN 1557-1947
РУБ
Physics, Applied + Physics, Condensed Matter
Рубрики:
MAGNETIZATION
BULK
Кл.слова (ненормированные):
Trapped flux
--
Vortex pinning
--
Monte Carlo
--
Trapped field magnet
--
HTS
foam
Аннотация:
The Monte Carlo method has been used to calculate the trapped magnetic field in superconducting plates with holes. The mechanism of flux pinning on the holes is implemented with special subprocesses added to the algorithm: vortex capture and emission, both occurring on the hole boundaries. Secondary peaks related to the holes emerge on the calculated profiles of the trapped magnetic field. It has been found that these peaks disappear in plates with sufficiently strong pinning or when the computational mesh is coarse (the case corresponding to a low resolution of probes in experiments). The dependence of the trapped field on the hole radius has been analyzed.
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Держатели документа:
Natl Res Nucl Univ MEPhI, Moscow 115409, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Maksimova, A. N.; Kashurnikov, V. A.; Moroz, A. N.; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; RFBRRussian Foundation for Basic Research (RFBR) [20-21-00085]; ROSATOM [20-21-00085]
}
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