Abstract
Pb0.7Cu0.3Sr2Y0.5Ca 0.5Cu2Oy was synthesized as a mother specimen in air and then annealed under two different experimental conditions, in an oxidizing and in a reducing condition. The mother specimen was a nonsuperconductor, but both annealed specimens, one quenched from high temperature and the other treated in high-pressure O2, were superconductors with Tc's of about 50 K and about 60 K, respectively. The low Cu-valence of the quenched specimen which showed superconductivity suggests a decrease in the Pb-valence, while the high Tc of the specimen treated in high-pressure O2 would be explained by high Cu-valence and Pb4+.
| Original language | English |
|---|---|
| Pages (from-to) | 204-207 |
| Number of pages | 4 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 263 |
| Issue number | 1-4 |
| DOIs | |
| Publication status | Published - May 1996 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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Kikuchi, M., Shida, M., Ohshima, E., Muraoka, Y., & Syono, Y. (1996). Synthesis conditions and superconductivity of Pb0.7Cu0.3Sr2Y0.5Ca 0.5Cu2Oy. Physica C: Superconductivity and its applications, 263(1-4), 204-207. https://doi.org/10.1016/0921-4534(95)00824-1