TY - JOUR
T1 - On the influence of K2CO3 additives in obtaining HTSC materials of the YBCO system
AU - Veneva, A.
AU - Nedkov, I.
AU - Lovchinov, V.
PY - 1995/1/1
Y1 - 1995/1/1
N2 - The concentration dependence of the transition temperature Tc and microstructure has been studied in the high-Tc compounds Y1-2xBa2-0.2xKxCu3O7-y, Y1Ba2Cu3.5-xKxO7-y, Y1Ba2-xCu3KxO7-y, where x = 0-1.50. Only traces of K (1 × 10-2 wt%) 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. Between x = 0.40-0.75 a homogeneous grain-size ceramic structure was observed. This behaviour permits the obtaining of monophase Y1Ba2Cu3Oy with values of Tc = 93.6 K and ΔT = 1.5 K using simplified technological process and baking in air atmosphere.
AB - The concentration dependence of the transition temperature Tc and microstructure has been studied in the high-Tc compounds Y1-2xBa2-0.2xKxCu3O7-y, Y1Ba2Cu3.5-xKxO7-y, Y1Ba2-xCu3KxO7-y, where x = 0-1.50. Only traces of K (1 × 10-2 wt%) 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. Between x = 0.40-0.75 a homogeneous grain-size ceramic structure was observed. This behaviour permits the obtaining of monophase Y1Ba2Cu3Oy with values of Tc = 93.6 K and ΔT = 1.5 K using simplified technological process and baking in air atmosphere.
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U2 - 10.1016/0964-1807(95)00030-9
DO - 10.1016/0964-1807(95)00030-9
M3 - Article
AN - SCOPUS:0029226981
SN - 0964-1807
VL - 3
SP - 43
EP - 46
JO - Applied Superconductivity
JF - Applied Superconductivity
IS - 1-3
ER -