Suppression of superconductivity by lanthanum substitution in the Bi4Ca3Sr3Cu4Oy system

N. Ikeda, K. Kohn, E. V. Sampathkumaran, R. Vijayaraghavan

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11 Citations (Scopus)

Abstract

The influence of partial substitution of La for Bi on the superconductivity of Bi4Ca3Sr3Cu4Oy (y = undetermined) is investigated by DC resistance (R) and AC susceptibility (χ) measurements and compared with the behaviour in the corresponding Eu and Gd substituted specimens. The results suggest that La suppresses superconductivity much faster than Eu and Gd substituents. We propose that the depression of superconductivity by La is not simply due to disorder, but due to the presence of extended 4f electrons.

Original languageEnglish
Pages (from-to)51-55
Number of pages5
JournalSolid State Communications
Volume68
Issue number1
DOIs
Publication statusPublished - Oct 1988
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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