Abstract
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.
Original language | English |
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Pages (from-to) | 31-34 |
Number of pages | 4 |
Journal | Solid State Communications |
Volume | 87 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1993 Jul |
Externally published | Yes |
ASJC Scopus subject areas
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry