• Mössbauer studies of Gd-doped bismuth-based ceramic superconductors

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    • Keywords


      Gd-Mössbauer; ceramic superconductors

    • Abstract


      The results of155Gd Mössbauer studies (above 1·5K) of the oxides, Bi3·5Gd0·5Ca3Sr3Cu4Oy and Bi2Sr2Ca1−xGdxCu2Oy (x=0·25 and 0·5) are reported. The observed electric quadrupolar split resonance patterns suggest that Gd ions prefer to occupy Ca site in both series. The spectral features give evidence for paramagnetic relaxation of isolated Gd ions at low temperatures.

    • Author Affiliations


      E V Sampathkumaran1 G Wortmann1 2 G Kaindl1 2

      1. Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay - 400 005, India
      2. Institut für atom-und Festkorperphysik, Freie Universitat Berlin, Arnimallee 14, Berlin 33, FRG
    • Dates

  • Bulletin of Materials Science | News

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