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The influence of geometry on self-field AC losses of Ag sheathed PbBi2223 tapes

Record type: Article

We measured axial fields along an Ag sheltered PbBi2223 superconducting tape 3 mm wide and 0.03 mm thick carrying 47 Hz alternating currents. Tte critical current of the tape at 77 K was 1 5 A corresponding to a critical current density of 16 000 A/cm2. The axial electric field was measured by pairs of voltage leads brought out in a plane perpendicular to the tape axis, turned axially to meet and so led out to a voltmeter. The spatial variation and the current dependence of the electric field, obtained from several pairs of taps closed at different radial positions, were consistent with the prediction for a uniform superconducting thin rectangle with a critical current Ic rather than a superconductor of elliptical cross-section. Our results also showed that the hysteretic losses at currents below Ic can be measured with an accuracy of about 5% using a pair of taps closed at a radial distance about three times the tape half-width.

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Citation

Yang, Y., Hughes, T., Beduz, C., Spiller, D.M., Scurlock, R.G. and Norris, W.T. (1996) The influence of geometry on self-field AC losses of Ag sheathed PbBi2223 tapes Physica C: Superconductivity And its Applications, 256, (3-4), pp. 378-386. (doi:10.1016/0921-4534(95)00662-1).

More information

Published date: 1996

Identifiers

Local EPrints ID: 21073
URI: http://eprints.soton.ac.uk/id/eprint/21073
ISSN: 0921-4534
PURE UUID: 9b64a398-ff42-4d19-8c7f-58cb8e875c21

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Date deposited: 31 Oct 2006
Last modified: 17 Jul 2017 16:27

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Contributors

Author: Y. Yang
Author: T. Hughes
Author: C. Beduz
Author: D.M. Spiller
Author: R.G. Scurlock
Author: W.T. Norris

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