DC transport current measurements on prototype high Tc superconducting wires in pulsed magnetic fields up to 41 Telsa

Author

Hole, C.R.J. ; Jones, H. ; Burgoyne, J.W. ; Dew-Hughes, D. ; Grovenor, C.R.M. ; Goringe, M.J.

Author_Institution

Clarendon Lab., Oxford Univ., UK

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

1313

Lastpage

1316

Abstract

DC transport current measurements on prototype superconducting wire artefacts have been made in pulsed magnetic fields up to 41 T. The measurements were made over 9 cm lengths of wire wound helically round a 1 cm diameter former. Both powder in tube and open tape wire have been tested and it was found that the open tape performed significantly better under the action of the pulsed field than the powder in tube material. Significant differences in determined critical currents measured by this and conventional techniques are seen. It is believed that this is the result of eddy current heating in the silver substrate since such differences are not present in samples with electrically insulating substrates.<>

Keywords

bismuth compounds; calcium compounds; composite superconductors; critical currents; eddy currents; high-temperature superconductors; strontium compounds; superconducting tapes; 41 tesla; 9 cm; Ag substrate; BiSrCaCuO; DC transport current measurements; critical currents; eddy current heating; electrically insulating substrates; open tape wire; powder in tube; prototype high Tc superconducting wires; pulsed magnetic fields; Current measurement; High temperature superconductors; Length measurement; Magnetic field measurement; Materials testing; Powders; Prototypes; Pulse measurements; Superconducting filaments and wires; Wounds;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402804

Filename

402804