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1.


   
    Contributions from Inter-grain Boundaries to the Magneto-resistive Effect in Polycrystalline High-T (C) Superconductors. The Underlying Reason of Different Behavior for YBCO and BSCCO Systems / D. A. Balaev [et al.] // J. Supercond. Nov. Magn. - 2011. - Vol. 24, Is. 7. - P. 2129-2136, DOI 10.1007/s10948-011-1166-9. - Cited References: 30. - This work is supported by program N5 of RAS, project N7. . - ISSN 1557-1939
РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTORS
   PHASE-SLIP

   TRANSPORT-PROPERTIES

   TRANSITION

   FIELD

   COMPOSITES

   BULK

   TAPES

   YBA2CU3O7-DELTA

   DISSIPATION

Кл.слова (ненормированные):
BSCCO -- YBCO -- Intergrain boundaries -- Magnetoresistance -- BSCCO -- Intergrain boundaries -- Magnetoresistance -- YBCO -- BSCCO -- BSCCO system -- Comparative studies -- High Tc superconductors -- High-field -- Inter-grain -- Irreversibility lines -- Magneto-resistive effect -- Polycrystalline -- Resistive transition -- Standard measurements -- Weak pinning -- YBCO -- Bismuth -- Electric resistance -- Grain boundaries -- High temperature superconductors -- Lead -- Magnetic fields -- Magnetoelectronics -- Magnetoresistance -- Magnetos -- Superconductivity -- Yttrium barium copper oxides -- Semiconductor metal boundaries
Аннотация: In order to clarify the mechanisms in charge of broadening of resistive transition R(T) in magnetic fields of bismuth-based polycrystalline high-T (C) superconductor (HTSC), a comparative study of Bi1.8Pb0.3Sr1.9Ca2Cu3O (x) (BSCCO) and YBa2Cu3O7-delta (YBCO) have been performed. Magnetoresistive effects and irreversibility line obtained from magnetic measurements have been studied. It was established that (1) for YBCO, the smooth part of R(T) dependence unambiguously corresponds to dissipation in the intergrain boundaries for arbitrary magnetic fields; (2) for polycrystalline BSCCO, the smooth part of R(T) dependences correspond to dissipation within intergrain boundary subsystem in the field range H <10(2) Oe only, while standard measurements of R(T) dependences in magnetic field range H > 10(2) Oe reflect the dissipation processes occurring both in intergrain boundary and HTSC grain subsystems; (3) for the high-field range, the contribution from intergrain boundaries of BSCCO can be distinguished from magnetoresistance R(H) dependences obtained at high enough current density on textured samples. It is proposed that various magneto-resistive properties of these classical HTSC systems are due comparatively weak pinning in BSCCO.

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Держатели документа:
[Balaev, D. A.
Popkov, S. I.
Semenov, S. V.
Bykov, A. A.
Dubrovskiy, A. A.
Shaikhutdinov, K. A.
Petrov, M. I.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Balaev, D. A.
Popkov, S. I.
Sabitova, E. I.
Dubrovskiy, A. A.
Shaikhutdinov, K. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
L.V. Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Semenov, S. V.; Семенов, Сергей Васильевич; Bykov, A. A.; Быков, Алексей Анатольевич; Sabitova, E. I.; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
}
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2.


   
    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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3.


   
    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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4.


   
    Flux pinning docking interfaces in satellites using superconducting foams as trapped field magnets / M. R. Koblischka, A. Koblischka-Veneva, D. Gokhfeld [et al.] // IEEE Trans. Appl. Supercond. - 2022. - Vol. 32, Is. 4. - Ст. 4900105, DOI 10.1109/TASC.2022.3147734. - Cited References: 44. - This work was supported in part by SUPERFOAM international project funded by ANR and DFG under Grants ANR-17-CE05-0030 and DFG-ANR Ko2323-10. . - ISSN 1051-8223. - ISSN 1558-2515
РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
BULK
   RECONFIGURATION

   MAGNETIZATION

Кл.слова (ненормированные):
Superconducting magnets -- Satellites -- Yttrium barium copper oxide -- Magnetomechanical effects -- Magnetic fields -- Superconducting coils -- Magnetometers -- Flux-pinning docking interface -- Foams -- Trapped field magnets -- YBCO
Аннотация: Flux-Pinning Docking Interfaces (FPDI) in satellite systems were developed using bulk superconductors and permanent magnets in previous works. However, such FPDIs have limited magnetic field strength, consist of heavy-weight material, and can only be used with a single purpose, i.e., as chasing or docking satellite. Replacing the magnetic material in the FPDI by a trapped field (TF)-magnet would enable the interface to operate for both purposes, i.e., generating a (stronger) magnetic field and trapping it. We show the requirements for such a system and discuss the possible gains when using a TF-FPDI in satellites. To reduce the system weight, the use of superconducting foams as superconducting material is discussed in detail. Furthermore, the use of superconducting foams, the size of which can be easily upscaled, may also comprise the function of the damping material, so even more weight could be saved for the payload.

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Держатели документа:
Saarland Univ, Dept Expt Phys, D-66041 Saarbrucken, Germany.
Shibaura Inst Technol, Tokyo 1358548, Japan.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Tokyo Univ Sci, Dept Phys, Tokyo 1628601, Japan.
Univ Lorraine, GREEN, F-54000 Nancy, France.

Доп.точки доступа:
Koblischka, Michael R.; Koblischka-Veneva, Anjela; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Naik, S. Pavan Kumar; Nouailhetas, Quentin; Berger, Kevin; Douine, Bruno; ANRFrench National Research Agency (ANR); DFGGerman Research Foundation (DFG)European Commission [ANR-17-CE05-0030, DFG-ANR Ko2323-10]
}
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