Abstract
Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.
| Original language | English |
|---|---|
| Pages (from-to) | 128-132 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 445-448 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2006 Oct 1 |
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Keywords
- Bulk
- Potassium
- YBaCuO
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Effect of potassium addition on YBa2Cu3Ox superconductors. / Inoue, Kazuo; Sakai, Naomichi; Murakami, Masato; Hirabayashi, I.
In: Physica C: Superconductivity and its Applications, Vol. 445-448, No. 1-2, 01.10.2006, p. 128-132.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of potassium addition on YBa2Cu3Ox superconductors
AU - Inoue, Kazuo
AU - Sakai, Naomichi
AU - Murakami, Masato
AU - Hirabayashi, I.
PY - 2006/10/1
Y1 - 2006/10/1
N2 - Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.
AB - Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.
KW - Bulk
KW - Potassium
KW - YBaCuO
UR - http://www.scopus.com/inward/record.url?scp=33748183283&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33748183283&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2006.03.093
DO - 10.1016/j.physc.2006.03.093
M3 - Article
AN - SCOPUS:33748183283
VL - 445-448
SP - 128
EP - 132
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -