Abstract
We studied the effect of Bi/Pb ratio and annealing temperature on Tc and formation of the high-Tc; phase in Bi-Pb-Sr-Ca-Cu-O superconductor by the three-step reaction process. The optimum Bi/Pb ratio is about 1.8:0.3 and the optimum annealing temperature is about 845-855°C. It is found that a variate high-Tc phase existed at the higher annealing temperature. The zero-resistance temperature of the variate high-Tc phase decreased when the annealing temperature increased, although the phase is isostructural with the 110 K phase.
Original language | English |
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Pages (from-to) | 421-423 |
Number of pages | 3 |
Journal | Journal of Superconductivity |
Volume | 3 |
Issue number | 4 |
DOIs | |
State | Published - Dec 1990 |
Externally published | Yes |
Keywords
- Bi/Pb Ratio
- BiPbSrCaCuO
- T