Development of Tl-1223 conductors for 77 K HTS applications

Tl-1223 conductors have been fabricated by the powder-in-tube (PIT) and surface-coated conductor (thick film) techniques. Current densities (J/sub c/) of 20,000 A/cm/sup 2/ and 12,000 A/cm/sup 2/ have been achieved at 77 K in short monofilament tapes and meter-long 37-filament tapes respectively. A...

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Veröffentlicht in:IEEE transactions on applied superconductivity 1997-06, Vol.7 (2), p.1953-1956
Hauptverfasser: Selvamanickam, V., Pfaffenbach, K., Kirchoff, D., Cardner, K.M., Hazelton, D.W., Haldar, P.
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container_end_page 1956
container_issue 2
container_start_page 1953
container_title IEEE transactions on applied superconductivity
container_volume 7
creator Selvamanickam, V.
Pfaffenbach, K.
Kirchoff, D.
Cardner, K.M.
Hazelton, D.W.
Haldar, P.
description Tl-1223 conductors have been fabricated by the powder-in-tube (PIT) and surface-coated conductor (thick film) techniques. Current densities (J/sub c/) of 20,000 A/cm/sup 2/ and 12,000 A/cm/sup 2/ have been achieved at 77 K in short monofilament tapes and meter-long 37-filament tapes respectively. A large diameter test pancake coil was successfully fabricated with 17 m long PIT tapes. A new process has been developed to achieve grain alignment in PIT Tl-1223. Critical currents of 18 A and a J/sub c/ of 19000 A/cm/sup 2/ has been achieved at 77 K in surface-coated Tl-1223 conductor fabricated by an industrial process.
doi_str_mv 10.1109/77.620969
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Current densities (J/sub c/) of 20,000 A/cm/sup 2/ and 12,000 A/cm/sup 2/ have been achieved at 77 K in short monofilament tapes and meter-long 37-filament tapes respectively. A large diameter test pancake coil was successfully fabricated with 17 m long PIT tapes. A new process has been developed to achieve grain alignment in PIT Tl-1223. Critical currents of 18 A and a J/sub c/ of 19000 A/cm/sup 2/ has been achieved at 77 K in surface-coated Tl-1223 conductor fabricated by an industrial process.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/77.620969</doi><tpages>4</tpages></addata></record>
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source IEEE Electronic Library (IEL)
subjects Applied sciences
Coils
Conductive films
Conductors
Critical current
Critical current density
Current density
Electric connection. Cables. Wiring
Electrical engineering. Electrical power engineering
Exact sciences and technology
High temperature superconductors
Materials
Superconducting transition temperature
Testing
Thick films
Various equipment and components
title Development of Tl-1223 conductors for 77 K HTS applications
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