Percolation and the Josephson effect in high- T c superconducting composites based on yttrium ceramics
Percolation processes and the magnetic susceptibility are investigated in composites based on yttrium high- T c superconductors (Y-HTSCs). The superconducting fraction in the composites is determined for different amounts of an added nonsuperconducting fraction. The limit of percolation conduction v...
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| Veröffentlicht in: | Low temperature physics (Woodbury, N.Y.) N.Y.), 2006-08, Vol.32 (8), p.846-848 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Percolation processes and the magnetic susceptibility are investigated in composites based on yttrium high-
T
c
superconductors (Y-HTSCs). The superconducting fraction in the composites is determined for different amounts of an added nonsuperconducting fraction. The limit of percolation conduction via superconducting grains for a HTSC–insulator composite is
(
17
±
2
)
%
superconducting fraction by volume. The Josephson properties of composite superconductors near the percolation limit are investigated. |
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| ISSN: | 1063-777X 1090-6517 |
| DOI: | 10.1063/1.2219507 |