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

A. Veneva, I. Nedkov, V. Lovchinov

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)43-46
Number of pages4
JournalApplied Superconductivity
Volume3
Issue number1-3
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

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baking
Alkali metals
high temperature superconductors
Perovskite
Superconducting transition temperature
Positive ions
Crystals
Microstructure
Air
alkali metals
grain size
transition temperature
ceramics
cations
atmospheres
microstructure
air
cells
crystals

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

On the influence of K2CO3 additives in obtaining HTSC materials of the YBCO system. / Veneva, A.; Nedkov, I.; Lovchinov, V.

In: Applied Superconductivity, Vol. 3, No. 1-3, 01.01.1995, p. 43-46.

Research output: Contribution to journalArticle

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