Bi-rich BiPbSrCaCuO (2-2-2-3) superconducting tapes

D. Y. Kaufman, Michael T. Lanagan, T. A. Ballen, S. E. Dorris, J. T. Dawley, R. B. Poeppel

Research output: Contribution to journalArticle

Abstract

The microstructural and electrical properties of Ag clad BiyPb0.4Sr2Ca2Cu3Ox (y = 1.8, 2.0 and 2.3) powder-in-tube tapes were investigated. The highest Jc values (2000 A/cm2 at 77 K and 0 T) were obtained for tapes of powders y = 1.8 and 2.0 following a 150 h thermomechanical routine at 855°C. The presence of alkaline earth second phases was not diminished by the addition of bismuth. The phase equilibria were observed to shift from 2-2-2-3+ Sr14-xCaxCu24O48 + SrxCa2-xCuO3 to 2-2-2-3 + SrxCa2-xCuO3 + CuO as the Bi content was increased from y = 1.8 to 2.0. (Sr,Ca)2PbO4 and 2-2-1-2 were present as by-product phases at temperatures above and below 855°C. Higher Bi content (y = 2.3) caused formation of the 2-2-1-2 phase as the 2-2-2-3 became Bi-saturated.

Original languageEnglish (US)
Pages (from-to)1-4
Number of pages4
JournalMaterials Letters
Volume18
Issue number1-2
DOIs
StatePublished - Jan 1 1993

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Superconducting tapes
Powders
Tapes
tapes
Bismuth
Phase equilibria
bismuth
Byproducts
Electric properties
Earth (planet)
electrical properties
tubes
shift
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kaufman, D. Y., Lanagan, M. T., Ballen, T. A., Dorris, S. E., Dawley, J. T., & Poeppel, R. B. (1993). Bi-rich BiPbSrCaCuO (2-2-2-3) superconducting tapes. Materials Letters, 18(1-2), 1-4. https://doi.org/10.1016/0167-577X(93)90045-Y
Kaufman, D. Y. ; Lanagan, Michael T. ; Ballen, T. A. ; Dorris, S. E. ; Dawley, J. T. ; Poeppel, R. B. / Bi-rich BiPbSrCaCuO (2-2-2-3) superconducting tapes. In: Materials Letters. 1993 ; Vol. 18, No. 1-2. pp. 1-4.
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Kaufman, DY, Lanagan, MT, Ballen, TA, Dorris, SE, Dawley, JT & Poeppel, RB 1993, 'Bi-rich BiPbSrCaCuO (2-2-2-3) superconducting tapes', Materials Letters, vol. 18, no. 1-2, pp. 1-4. https://doi.org/10.1016/0167-577X(93)90045-Y

Bi-rich BiPbSrCaCuO (2-2-2-3) superconducting tapes. / Kaufman, D. Y.; Lanagan, Michael T.; Ballen, T. A.; Dorris, S. E.; Dawley, J. T.; Poeppel, R. B.

In: Materials Letters, Vol. 18, No. 1-2, 01.01.1993, p. 1-4.

Research output: Contribution to journalArticle

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AU - Lanagan, Michael T.

AU - Ballen, T. A.

AU - Dorris, S. E.

AU - Dawley, J. T.

AU - Poeppel, R. B.

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N2 - The microstructural and electrical properties of Ag clad BiyPb0.4Sr2Ca2Cu3Ox (y = 1.8, 2.0 and 2.3) powder-in-tube tapes were investigated. The highest Jc values (2000 A/cm2 at 77 K and 0 T) were obtained for tapes of powders y = 1.8 and 2.0 following a 150 h thermomechanical routine at 855°C. The presence of alkaline earth second phases was not diminished by the addition of bismuth. The phase equilibria were observed to shift from 2-2-2-3+ Sr14-xCaxCu24O48 + SrxCa2-xCuO3 to 2-2-2-3 + SrxCa2-xCuO3 + CuO as the Bi content was increased from y = 1.8 to 2.0. (Sr,Ca)2PbO4 and 2-2-1-2 were present as by-product phases at temperatures above and below 855°C. Higher Bi content (y = 2.3) caused formation of the 2-2-1-2 phase as the 2-2-2-3 became Bi-saturated.

AB - The microstructural and electrical properties of Ag clad BiyPb0.4Sr2Ca2Cu3Ox (y = 1.8, 2.0 and 2.3) powder-in-tube tapes were investigated. The highest Jc values (2000 A/cm2 at 77 K and 0 T) were obtained for tapes of powders y = 1.8 and 2.0 following a 150 h thermomechanical routine at 855°C. The presence of alkaline earth second phases was not diminished by the addition of bismuth. The phase equilibria were observed to shift from 2-2-2-3+ Sr14-xCaxCu24O48 + SrxCa2-xCuO3 to 2-2-2-3 + SrxCa2-xCuO3 + CuO as the Bi content was increased from y = 1.8 to 2.0. (Sr,Ca)2PbO4 and 2-2-1-2 were present as by-product phases at temperatures above and below 855°C. Higher Bi content (y = 2.3) caused formation of the 2-2-1-2 phase as the 2-2-2-3 became Bi-saturated.

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Kaufman DY, Lanagan MT, Ballen TA, Dorris SE, Dawley JT, Poeppel RB. Bi-rich BiPbSrCaCuO (2-2-2-3) superconducting tapes. Materials Letters. 1993 Jan 1;18(1-2):1-4. https://doi.org/10.1016/0167-577X(93)90045-Y