Novel resistive interfilamentary carbonate barriers in multifilamentary low AC loss Bi(2223)-tapes

Reducing the coupling losses, one component of the AC losses in BSCCO tapes, a novel idea for a conductor geometry was developed introducing resistive layers of strontium carbonate in the matrix. Two different preparation methods were applied to introduce the layers in the interfilamentary section,...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1999-06, Vol.9 (2), p.2155-2158
Main Authors: Goldacker, W., Quilitz, M., Obst, B., Eckelmann, H.
Format: Article
Language:English
Subjects:
Applied sciences
Bismuth compounds
Cable shielding
Conductivity
Conductors
Electronics
Exact sciences and technology
Geometry
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Strontium
Superconducting cables
Superconducting devices
Superconducting filaments and wires
Superconducting films
Superconducting materials
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Summary:Reducing the coupling losses, one component of the AC losses in BSCCO tapes, a novel idea for a conductor geometry was developed introducing resistive layers of strontium carbonate in the matrix. Two different preparation methods were applied to introduce the layers in the interfilamentary section, a dip coating technique and a double tube method. Additionally a new ring bundle technique for multifilamentary Bi(2223)-tapes was developed based on a tape composite structure similar to a Rutherford cable with the possibility of realizing practically fully transposed filaments and with a central resistive strontium carbonate core. The achieved current densities of 10 kAcm/sup -2/ with a twist pitch of 10 mm qualifies this new conductor as a very promising alternative concept. We report on the preparation method and the superconducting properties of those tapes.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.784894