Filament bridging and critical current density variation in the cross-section of multifilamentary Bi-2223/Ag tapes

Author

Polak, M. ; Majoros, M. ; Kasztler, A. ; Kirchmayr, H.

Author_Institution

Inst. of Electr. Eng., Slovak Acad. of Sci., Bratislava, Slovakia

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

2151

Lastpage

2154

Abstract

We calculated magnetic fields in the vicinity of model multifilamentary Bi-2223/Ag tapes carrying magnetisation currents with a constant critical current density. The profiles of the perpendicular component of the magnetic field, B/sub mz/, in the lateral direction for the model tape without superconducting interconnections (bridging) and those for the model tape with filament bridging are very different. Experimental results on real tapes qualitatively agree with the calculations. Direct measurements of the filament critical current distribution in 2 of 3 measured tapes showed that the filament critical current, J/sub fc/, was the highest in the tape centre.

Keywords

bismuth compounds; calcium compounds; ceramics; critical current density (superconductivity); high-temperature superconductors; magnetic field effects; multifilamentary superconductors; silver; strontium compounds; superconducting interconnections; superconducting tapes; Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O-Ag; critical current density variation; filament bridging; magnetic fields; magnetisation currents; superconducting interconnections; Bismuth; Critical current; Critical current density; Current measurement; Magnetic field measurement; Magnetic hysteresis; Magnetization; Multifilamentary superconductors; Superconducting filaments and wires; Superconducting films;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.784893

Filename

784893