Mössbauer study of hyperfine interactions in EuFe2(As1xPx)2 and BaFe2(As1xPx)2

Anastasia Sklyarova, GC Tewari, Johan Linden, O. Mustonen, E-L Rautama, M. Karppinen

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Abstract

The magnetic properties of the pnictide superconductors with the nominal composition of BaFe2(As0.68P0.32)2 and EuFe2(As0.8P0.2)2 were studied by 57Fe Mössbauer spectroscopy. A superconducting transition at 30 K was detected and coexistence of magnetism and superconductivity at low temperatures was observed.The Mössbauer spectra show two iron-atom surroundings,which are attributed tou ndoped AFe2As2 and substituted AFe2(As1xPx)2, with at least one phosphorus atom in the tetragonal iron environment, (A = Ba or Eu).These two iron-atom surroundings were attributed to one macroscopic AFe2(As1xPx)2 phase.
Original languageUndefined/Unknown
Pages (from-to)327–332
JournalJournal of Magnetism and Magnetic Materials
Volume378
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Keywords

  • superconductivity
  • physics

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