摘要
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.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 421-423 |
| 页数 | 3 |
| 期刊 | Journal of Superconductivity |
| 卷 | 3 |
| 期 | 4 |
| DOI | |
| 出版状态 | 已出版 - 12月 1990 |
| 已对外发布 | 是 |
指纹
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