Transversal and longitudinal current distribution in Bi-2223/Ag tapes with high filament aspect ratio

P. Kovac, I. Husek, L. Kopera, O. van der Meer, A. Metz, Bernard ten Haken, J. Kvitkovic, M. Polak

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Abstract

Transversal and longitudinal homogeneity of Bi-2223/Ag tapes made by a tape-in-rectangular tube process with high filament aspect ratio was studied. Spatially resolved transport measurements (“magnetic knife”), Hall probe measurements and local V–I measurements were used to obtain the Ic distribution across and/or along the tape sample. The Ic distribution in the width of the filaments shows a minimum in the filaments centre and a maximum is measured near the filament edges. A periodical variation of longitudinal Ic values is observed by local V–I and by Hall probe measurements. Transversal and longitudinal filaments cross-sections were obtained and compared to transport critical currents.
Original languageUndefined
Pages (from-to)916-918
Number of pages3
JournalPhysica C
VolumePart II
Issue numberPart 2
DOIs
Publication statusPublished - 2002

Keywords

  • Hall probe scanning
  • V–I measurement
  • METIS-206808
  • IR-74735
  • Ic distribution
  • Bi-2223/Ag tapes

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