Effect of magnetic field, thermal cycling and bending strain on critical current density of multifilamentary Bi-2223/Ag tape and fabrication of a pancake coil |
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Authors: | T K Dey M K Chattopadhyay |
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Affiliation: | (1) Cryogenic Engineering Centre, Indian Institute of Technology, 721 302 Kharagpur, India |
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Abstract: | Multifilamentary HTSC tapes are important for their applications in various electrical devices. Powder-in-tube technique with improved optimized synthesis parameters is regarded as one of the most promising ways to prepare long-length multifilamentary Bi-2223/Ag tapes. Nevertheless, usefulness of such tapes depends on their electrical and mechanical properties. Critical current density of a Bi-2223/Ag tape with 37 filaments has been studied at 77 K with field, field orientation, thermal cycling and bending strain as parameters. Results have been discussed in light of various mechanisms and models. A small pancake coil has been fabricated out of the same tape and the test results presented. |
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Keywords: | Multifilamentary Bi-2223/Ag tape powder-in-tube technique critical current density thermal cycling bending strain pancake coil |
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