Flux pinning and critical currents in hot extruded Bi-2223/Ag tapes

The transport electrical properties of a hot extruded Bi-2223/Ag tape having critical current density J c-3×10 4 A/cm 2 (at 77 K, 0 T) was measured in the range of temperature from 65 K to 88 K and external magnetic fields up to 10 T. From J c(B) curves the irreversibility field B ∗ at different tem...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1994-12, Vol.235, p.3033-3034
Main Authors: Martini, L., Gandini, A., Rossi, L., Ottoboni, V., Zanella, S.
Format: Article
Language:English
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Summary:The transport electrical properties of a hot extruded Bi-2223/Ag tape having critical current density J c-3×10 4 A/cm 2 (at 77 K, 0 T) was measured in the range of temperature from 65 K to 88 K and external magnetic fields up to 10 T. From J c(B) curves the irreversibility field B ∗ at different temperatures was estimated. The normalized volume pinning force F p/F p,max dependence on reduced magnetic field b= B/ B ∗ exhibited a scaling law behaviour as predicted by the single vortex pinning model.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(94)91043-X