Abstract
The influence of K2CO3 additive on the superconducting properties and microstructure of samples with nominal compositions Y1-0.2xBa2-0.2xKxCu3O7-y, Y1Ba2Cu3.5-xKxCu3O7-y, (x=0 to 1.50). were investigated. Only traces of K (1×10-1wt.%) were observed in all samples after the final baking and no proof could be found for alkali metal cations participating in the Perovskite crystal cell. Potassium carbonate eliminated the CuO second phase from the system, because of a KCu-compound formation which evaporated above 900° C. The influence of the K2CO3 was positive for x = 0.40 to 0.75 where we observed homogeneous grain-size ceramic structure and HTSC Y1Ba2Cu3Oy sample with values of Tc = 93.4 K and ΔT = 1.5 k.
| Original language | English |
|---|---|
| Pages (from-to) | 805-806 |
| Number of pages | 2 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 235-240 |
| Issue number | PART 2 |
| DOIs | |
| Publication status | Published - 1994 Dec |
| 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
Superconducting properties and microstructure of YBCO HTSC materials with K2CO3 addition. / Veneva, A.; Nedkov, I.; Lovchinov, V.
In: Physica C: Superconductivity and its applications, Vol. 235-240, No. PART 2, 12.1994, p. 805-806.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superconducting properties and microstructure of YBCO HTSC materials with K2CO3 addition
AU - Veneva, A.
AU - Nedkov, I.
AU - Lovchinov, V.
PY - 1994/12
Y1 - 1994/12
N2 - The influence of K2CO3 additive on the superconducting properties and microstructure of samples with nominal compositions Y1-0.2xBa2-0.2xKxCu3O7-y, Y1Ba2Cu3.5-xKxCu3O7-y, (x=0 to 1.50). were investigated. Only traces of K (1×10-1wt.%) were observed in all samples after the final baking and no proof could be found for alkali metal cations participating in the Perovskite crystal cell. Potassium carbonate eliminated the CuO second phase from the system, because of a KCu-compound formation which evaporated above 900° C. The influence of the K2CO3 was positive for x = 0.40 to 0.75 where we observed homogeneous grain-size ceramic structure and HTSC Y1Ba2Cu3Oy sample with values of Tc = 93.4 K and ΔT = 1.5 k.
AB - The influence of K2CO3 additive on the superconducting properties and microstructure of samples with nominal compositions Y1-0.2xBa2-0.2xKxCu3O7-y, Y1Ba2Cu3.5-xKxCu3O7-y, (x=0 to 1.50). were investigated. Only traces of K (1×10-1wt.%) were observed in all samples after the final baking and no proof could be found for alkali metal cations participating in the Perovskite crystal cell. Potassium carbonate eliminated the CuO second phase from the system, because of a KCu-compound formation which evaporated above 900° C. The influence of the K2CO3 was positive for x = 0.40 to 0.75 where we observed homogeneous grain-size ceramic structure and HTSC Y1Ba2Cu3Oy sample with values of Tc = 93.4 K and ΔT = 1.5 k.
UR - http://www.scopus.com/inward/record.url?scp=0041516826&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0041516826&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(94)91627-6
DO - 10.1016/0921-4534(94)91627-6
M3 - Article
AN - SCOPUS:0041516826
VL - 235-240
SP - 805
EP - 806
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 2
ER -