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 - Jan 1 1996 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Cite this
Synthesis conditions and superconductivity of Pb0.7Cu0.3Sr2Y0.5Ca 0.5Cu2Oy . / Kikuchi, Masae; Shida, Minako; Ohshima, Eriko; Muraoka, Yuji; Syono, Yasuhiko.
In: Physica C: Superconductivity and its Applications, Vol. 263, No. 1-4, 01.01.1996, p. 204-207.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis conditions and superconductivity of Pb0.7Cu0.3Sr2Y0.5Ca 0.5Cu2Oy
AU - Kikuchi, Masae
AU - Shida, Minako
AU - Ohshima, Eriko
AU - Muraoka, Yuji
AU - Syono, Yasuhiko
PY - 1996/1/1
Y1 - 1996/1/1
N2 - 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+.
AB - 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+.
UR - http://www.scopus.com/inward/record.url?scp=0030142846&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030142846&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(95)00824-1
DO - 10.1016/0921-4534(95)00824-1
M3 - Article
VL - 263
SP - 204
EP - 207
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-4
ER -