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Flux penetration in...
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Koblishka, M. R.
(author)
Flux penetration into an artificially granular high-Tc superconductor
- Article/chapterEnglish1999
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LIBRIS-ID:oai:research.chalmers.se:91cd1d19-7474-4686-848c-0122dd5f61eb
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https://doi.org/10.1103/PhysRevB.59.12114DOI
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https://research.chalmers.se/publication/147532URI
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Language:English
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Summary in:English
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A YBa2Cu3O7- thin film is patterned into a hexagonal close-packed lattice of disks (2r=50 m) which are touching each other at the circumferences in order to enable the flow of an intergranular current. Such a sample was suggested by Koblischka et al. [Appl. Phys. Lett. 70, 514 (1997)] as a model for a layered granular structure like in a (Pb,Bi)2Sr2Ca2Cu3O10+ (Bi-2223) tape. The magnetization measurements reveal an anomalous position of the low-field peak (central peak) similar to Bi-2223 tapes. Magneto-optic imaging is employed to visualize the local-field distributions. At low magnification, the flux patterns in the intergranular area between the disks are observed. The observations at high magnification reveal the flux penetration and pinning within the disks. It is shown that such samples may serve as model samples for granular high-Tc superconductors
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Pust, L.
(author)
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Galkin, A.
(author)
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Nalevka, P.
(author)
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Jirsa, M.
(author)
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Johansen, T. H.
(author)
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Bratsberg, H.
(author)
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Nilsson, Bengt,1954Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)beni
(author)
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Claeson, Tord,1938Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f4atc
(author)
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Chalmers tekniska högskola
(creator_code:org_t)
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In:Physical Review B59, s. 12114-202469-99692469-9950
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Koblishka, M. R.
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Pust, L.
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Galkin, A.
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Nalevka, P.
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Jirsa, M.
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Johansen, T. H.
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Bratsberg, H.
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Nilsson, Bengt, ...
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Claeson, Tord, 1 ...
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- NATURAL SCIENCES
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Chalmers University of Technology