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Flux penetration in...
Flux penetration into an artificially granular high-Tc superconductor
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Koblishka, M. R. (author)
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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, 1954 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Claeson, Tord, 1938 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 1999
- 1999
- English.
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In: Physical Review B. - 2469-9969 .- 2469-9950. ; 59, s. 12114-20
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https://doi.org/10.1...
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Abstract
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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
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- barium compounds
- superconducting thin films
- yttrium compounds
- granular structure
- flux pinning
- penetration depth (superconductivity)
- high-temperature superconductors
- flux flow
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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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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show more...
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Bratsberg, H.
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Nilsson, Bengt, ...
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Claeson, Tord, 1 ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Physical Review ...
- By the university
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Chalmers University of Technology