Ic and phase characteristics of (Bi,Pb)2223 tapes after 1 heat treatment in a temperature gradient under different oxygen partial pressures
Ic and phase characteristics of (Bi,Pb)2223 tapes after 1 heat treatment in a temperature gradient under different oxygen partial pressures
The heat treatment of (Bi,Pb)2223 tapes in a furnace with a temperature gradient allows the study of many heat treatment temperatures at the same time. 20 cm lengths of tape were given a typical first heat treatment of a period of 40 hours in a ~1°C/cm temperature gradient under either 7.5% partial pressure O2, or air. The maximum amount of (Bi,Pb)2223 occurred in a temperature window, (⩽2% change in the phase composition) of about 7°C under 7.5% partial pressure and 2°C under air. The relationship between the phase composition and the transport current, Ic, for both atmospheres is investigated
bismuth compounds, calcium compounds, critical currents, heat treatment, high-temperature superconductors, lead compounds, multifilamentary superconductors, strontium compounds, superconducting tapes
2979-2982
Young, E.A.
d3a881b0-a564-41f5-9843-34ae86da360f
Yang, Y.
4cac858a-e0c0-4174-a839-05ca394fc51f
Beduz, C.
2cbc6ece-3e8b-454b-86d6-3960596bd234
Riddle, R.
d7bef09c-ef24-4e36-8aaf-1f1fe7635d98
2001
Young, E.A.
d3a881b0-a564-41f5-9843-34ae86da360f
Yang, Y.
4cac858a-e0c0-4174-a839-05ca394fc51f
Beduz, C.
2cbc6ece-3e8b-454b-86d6-3960596bd234
Riddle, R.
d7bef09c-ef24-4e36-8aaf-1f1fe7635d98
Young, E.A., Yang, Y., Beduz, C. and Riddle, R.
(2001)
Ic and phase characteristics of (Bi,Pb)2223 tapes after 1 heat treatment in a temperature gradient under different oxygen partial pressures.
IEEE Transactions on Applied Superconductivity, 11 (Issue 1, part 3), .
(doi:10.1109/77.919688).
Abstract
The heat treatment of (Bi,Pb)2223 tapes in a furnace with a temperature gradient allows the study of many heat treatment temperatures at the same time. 20 cm lengths of tape were given a typical first heat treatment of a period of 40 hours in a ~1°C/cm temperature gradient under either 7.5% partial pressure O2, or air. The maximum amount of (Bi,Pb)2223 occurred in a temperature window, (⩽2% change in the phase composition) of about 7°C under 7.5% partial pressure and 2°C under air. The relationship between the phase composition and the transport current, Ic, for both atmospheres is investigated
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Published date: 2001
Keywords:
bismuth compounds, calcium compounds, critical currents, heat treatment, high-temperature superconductors, lead compounds, multifilamentary superconductors, strontium compounds, superconducting tapes
Identifiers
Local EPrints ID: 22432
URI: http://eprints.soton.ac.uk/id/eprint/22432
ISSN: 1051-8223
PURE UUID: 3c59b17d-8792-4c5e-84c0-b11b22457c5d
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Date deposited: 22 Mar 2006
Last modified: 16 Mar 2024 02:44
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Author:
C. Beduz
Author:
R. Riddle
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