摘要
We have synthesized three superconducting compounds based on the Pb-1212 phase, namely (Pb0.75Cu0.25)Sr2(Ca0.5Y0.5) Cu2O7-δ, (In0.2Pb0.55Cu0.25)Sr2(Ca0.5Y0.5)Cu2O7-δ and (Pb0.75Cu0.25)Sr2(Ca0.5Yb0.5)Cu2O7-δ, having Tc's of 40 K, 55 K and 60 K, respectively. From thermoelectric power measurements we conclude that these Pb-1212 based materials are located in the "underdoped" region compared to YBa2Cu3O7-δ. Our proposal is that still higher Tc's may be possible if one can successfully introduce even greater concentrations of holes into the conducting CuO2 plane.
原文 | 英語 |
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頁(從 - 到) | 31-34 |
頁數 | 4 |
期刊 | Solid State Communications |
卷 | 87 |
發行號 | 1 |
DOIs | |
出版狀態 | 已發佈 - 1993 7月 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 化學 (全部)
- 凝聚態物理學
- 材料化學