On the influence of K2CO3 additives in obtaining HTSC materials of the YBCO system

A. Veneva; I. Nedkov; V. Lovchinov

doi:10.1016/0964-1807(95)00030-9

On the influence of K₂CO₃ additives in obtaining HTSC materials of the YBCO system

A. Veneva, I. Nedkov, V. Lovchinov

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The concentration dependence of the transition temperature T_c and microstructure has been studied in the high-T_c compounds Y_1-2xBa_2-0.2xK_xCu₃O_7-y, Y₁Ba₂Cu_3.5-xK_xO_7-y, Y₁Ba_2-xCu₃K_xO_7-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 Y₁Ba₂Cu₃O_y with values of T_c = 93.6 K and ΔT = 1.5 K using simplified technological process and baking in air atmosphere.

Original language	English
Pages (from-to)	43-46
Number of pages	4
Journal	Applied Superconductivity
Volume	3
Issue number	1-3
DOIs	https://doi.org/10.1016/0964-1807(95)00030-9
Publication status	Published - 1995 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1016/0964-1807(95)00030-9

Cite this

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title = "On the influence of K2CO3 additives in obtaining HTSC materials of the YBCO system",

abstract = "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.",

author = "A. Veneva and I. Nedkov and V. Lovchinov",

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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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On the influence of K₂CO₃ additives in obtaining HTSC materials of the YBCO system

Abstract

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