Zero resistance of quenched Bi1.5Pb0.4Sb0.1Sr2Ca2Cu3Ox at 140 K
Khan, J. A. A. ; Butt, N. M. ; Mahmood, A. ; Shaheen, R. ; Bashir, G. ; Shahid, K. A.
Springer
Published 1992
Springer
Published 1992
| ISSN: |
1573-4803
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|---|---|
| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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| Notes: |
Abstract A glass-ceramic of nominal composition Bi1.5Pb0.4Sb0.1Sr2Ca2Cu3Ox was prepared by the melt-quenching method. The subsequent heat treatment of the sample at 860±5°C showedT c(zero) at 94 K. Exposure of the sample for 4 days in air improved itsT c(zero) to 140 K. In another similarly heat-treated sample, a two-step transition in the p-Tcurve at 140 K and at 1 1 1 K, was observed. The superconducting transition appeared to be of a percolative nature.
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| Type of Medium: |
Electronic Resource
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| URL: |