Transport currents in Bi-2223/Ag tapes made using the tape-in-rectangular tube process, current distribution and Ic stress degradation

P. Kovác; I. Husek; T. Melisek; A. Metz; H. J.N. Van Eck; B. Ten Haken

doi:10.1088/0953-2048/15/4/324

Transport currents in Bi-2223/Ag tapes made using the tape-in-rectangular tube process, current distribution and I_c stress degradation

P. Kovác^*, I. Husek, T. Melisek, A. Metz, H. J.N. Van Eck, B. Ten Haken

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

9 Citations (Scopus)

Abstract

Using the tape-in-rectangular tube (TIRT) process, we have made multi-core Bi-2223/Ag tapes with various numbers of filaments (10-162), and with different filament architectures and orientations. We have measured the angular dependence of the transport current of the tape samples with 'parallel' and 'perpendicular' filaments. The transversal I_c distribution obtained by spatially resolved transport measurements ('magnetic knife') illustrates that the filament quality of the TIRT tapes is better at the tape edges than in the centre. The tapes were stressed by two types of tensioning set-up (a short straight sample and a U-shaped spring) and by bending at 77 K. The I_c degradation shows different behaviour for parallel and perpendicular filaments, which is attributed to the difference in filament density and crack propagation.

Original language	English
Pages (from-to)	624-629
Number of pages	6
Journal	Superconductor science and technology
Volume	15
Issue number	4
DOIs	https://doi.org/10.1088/0953-2048/15/4/324
Publication status	Published - 1 Apr 2002

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title = "Transport currents in Bi-2223/Ag tapes made using the tape-in-rectangular tube process, current distribution and Ic stress degradation",

abstract = "Using the tape-in-rectangular tube (TIRT) process, we have made multi-core Bi-2223/Ag tapes with various numbers of filaments (10-162), and with different filament architectures and orientations. We have measured the angular dependence of the transport current of the tape samples with 'parallel' and 'perpendicular' filaments. The transversal Ic distribution obtained by spatially resolved transport measurements ('magnetic knife') illustrates that the filament quality of the TIRT tapes is better at the tape edges than in the centre. The tapes were stressed by two types of tensioning set-up (a short straight sample and a U-shaped spring) and by bending at 77 K. The Ic degradation shows different behaviour for parallel and perpendicular filaments, which is attributed to the difference in filament density and crack propagation.",

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AU - Kovác, P.

AU - Husek, I.

AU - Melisek, T.

AU - Metz, A.

AU - Van Eck, H. J.N.

AU - Ten Haken, B.

PY - 2002/4/1

Y1 - 2002/4/1

N2 - Using the tape-in-rectangular tube (TIRT) process, we have made multi-core Bi-2223/Ag tapes with various numbers of filaments (10-162), and with different filament architectures and orientations. We have measured the angular dependence of the transport current of the tape samples with 'parallel' and 'perpendicular' filaments. The transversal Ic distribution obtained by spatially resolved transport measurements ('magnetic knife') illustrates that the filament quality of the TIRT tapes is better at the tape edges than in the centre. The tapes were stressed by two types of tensioning set-up (a short straight sample and a U-shaped spring) and by bending at 77 K. The Ic degradation shows different behaviour for parallel and perpendicular filaments, which is attributed to the difference in filament density and crack propagation.

AB - Using the tape-in-rectangular tube (TIRT) process, we have made multi-core Bi-2223/Ag tapes with various numbers of filaments (10-162), and with different filament architectures and orientations. We have measured the angular dependence of the transport current of the tape samples with 'parallel' and 'perpendicular' filaments. The transversal Ic distribution obtained by spatially resolved transport measurements ('magnetic knife') illustrates that the filament quality of the TIRT tapes is better at the tape edges than in the centre. The tapes were stressed by two types of tensioning set-up (a short straight sample and a U-shaped spring) and by bending at 77 K. The Ic degradation shows different behaviour for parallel and perpendicular filaments, which is attributed to the difference in filament density and crack propagation.

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Transport currents in Bi-2223/Ag tapes made using the tape-in-rectangular tube process, current distribution and I_c stress degradation

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