Mössbauer study of EuBa2(Cu(57Fe))3O7-d superconductor and PrBa2(Cu(57Fe))3O7-d non-superconductor

E. Kuzmann, Z. Homonnay, S. Nagy, M. Gál, A. Vértes

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Abstract

Mössbauer spectroscopy and X-ray diffractometry were used to study non-superconducting PrBa2Cu3(57Fe)O7-d and superconducting EuBa2Cu3(57Fe)O7-d perovskites. Significant differences were observed in the Mössbauer parameters of Eu- and Pr-containing isostructural cuprates. A relatively high isomer shift was found to be characteristic of iron atoms being present at Cu(1) site in the Pr-containing 1-2-3 compound. This can be considered as a consequence of the suppression of superconductivity, by hole-filling, or by hybridization of Pr states with O and Cu states, via charge transfer mechanism between the Cu(1)-O chain and Cu(2)-O plane.

Original languageEnglish
Pages (from-to)328-330
Number of pages3
JournalNuclear Inst. and Methods in Physics Research, B
Volume76
Issue number1-4
DOIs
Publication statusPublished - Apr 4 1993

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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