Fabrication of twisted multifilamentary BSCCO 2223 tapes by using high resistive sheath for AC application

For the application of high Tc superconductor to electric power systems, it is essential to reduce AC losses of BSCCO 2223 tapes. Different twist pitches of multifilamentary BSCCO 2223 tapes using high resistivity sheath were fabricated to investigate the effect of twist pitches on the microstructur...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1999-06, Vol.9 (2), p.2163-2166
Main Authors: YOO, J, KO, J, KIM, H, CHUNG, H
Format: Article
Language:English
Subjects:
Applied sciences
Bismuth compounds
Conductivity
Conductors
Critical current
Electric resistance
Electronics
Exact sciences and technology
Fabrication
Microelectronic fabrication (materials and surfaces technology)
Microstructure
Multifilamentary superconductors
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting devices
Superconducting magnets
Superconducting materials
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Summary:For the application of high Tc superconductor to electric power systems, it is essential to reduce AC losses of BSCCO 2223 tapes. Different twist pitches of multifilamentary BSCCO 2223 tapes using high resistivity sheath were fabricated to investigate the effect of twist pitches on the microstructure and critical current property, as well as to study the possible use of these conductors for AC application. The J/sub cr/ values of 10 mm and 5 mm twisted tapes drop faster than that of untwisted and 20 mm twisted tapes under increasing magnetic field, especially in low field regime (0/spl sim/0.03 T). It suggests that weak links in the former are more serious than in the latter, which is in accordance with the microstructure analysis.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.784896