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Accurate determination of the Mössbauer spectrum hyperfine parameters and correlation withT c in YBa2Cu3−x 57Fe x O7−δ (0.01≦x≦0.15)

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Abstract

High statistics room temperature Mössbauer spectra have been performed on ten YBa2Cu3−x Fe x O7−δ (0.01≦x≦0.15) samples. The different fit solutions (including broadening of the lines) are tested with “χ2” factor analysis. Only two solutions are valid with almost similar parameters. The results on present samples and our previous results on various materials made under different heat treatments show thatT c is governed byx and the relative population of one of the iron species. These species can be related to highly coordinated irons in the chains.

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Authors and Affiliations

  1. Laboratoire de Magnétisme, CNRS, 92195, Meudon Cedex, France

    J. L. Dormann, S. Sayouri, G. T. Bhandage & S. C. Bhargava

  2. Laboratoire de Physique des Solides de Bellevue, CNRS, 92195, Meudon Cedex, France

    G. Priftis, H. Pankowska, O. Gorochov & R. Suryanarayanan

  3. Département de Physique, Univ. de Fes, Maroc

    S. Sayouri

Authors
  1. J. L. Dormann
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  2. S. Sayouri
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  3. G. T. Bhandage
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  4. S. C. Bhargava
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  5. G. Priftis
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  6. H. Pankowska
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  7. O. Gorochov
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  8. R. Suryanarayanan
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Dormann, J.L., Sayouri, S., Bhandage, G.T. et al. Accurate determination of the Mössbauer spectrum hyperfine parameters and correlation withT c in YBa2Cu3−x 57Fe x O7−δ (0.01≦x≦0.15). Hyperfine Interact 55, 1273–1277 (1990). https://doi.org/10.1007/BF02397159

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  • DOI: https://doi.org/10.1007/BF02397159

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