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Mössbauer studies of57Fe doped single crystals of GdBa2Cu3O7-δ

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Zeitschrift für Physik B Condensed Matter

Abstract

57Fe Mössbauer effect measurements have been performed on single crystals of57Fe doped GdBa2Cu3O7-δ at various c-axis orientations and temperatures. The analysis of the data yields information on the sign and direction of Vzz, the direction of Bhf with respect to Vzz and the anisotropy of the f-factor for the individual observed three quadrupole doublets. From these data we conclude that the quadrupole doublet with ΔEQ ≃1.9 mm/s is due to Fe on a regular Cu(1)-site (4-fold oxygen coordination) with distorted local symmetry (Vzz isnot parallel to the c-axis), while the other quadrupole doublets have higher oxygen coordinations (higher Lamb-Mössbauer-factor).

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Author notes

  1. H. Micklitz

    Present address: II. Physikalisches Institut, Universität zu Köln, Zülpicher Strasse 77, W-5000, Köln 41, Germany

  2. V. Moshchalkov

    Present address: Laboratorium voor Vaste Stof-Fysika en Magnetisme, Katholieke Universiteit Leuven, B-3030, Leuven, Belgium

Authors and Affiliations

  1. Experimentalphysik IV, Ruhr-Universität, W-4630, Bochum, Germany

    H. J. Heinze & H. Micklitz

  2. Institut für Metallphysik und Nukleare Festkörperphysik, Technische Universität Braunschweig, Mendelssohnstrasse 3, W-3300, Braunschweig, Germany

    F. J. Litterst

  3. Centro Brasiliero de Pesquisas Fisicas-CBPF, Rua Dr. Xavier Sigaud 150, 22290, Rio de Janeiro, RJ, Brasil

    E. Baggio-Saitovitch

  4. Department of Physics, Moscow State University, 117234, Moscow, Russia

    V. Moshchalkov

  5. Department of Geology, Moscow State University, 117234, Moscow, Russia

    L. Leonjuk

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  1. H. J. Heinze
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  5. V. Moshchalkov
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  6. L. Leonjuk
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Heinze, H.J., Micklitz, H., Litterst, F.J. et al. Mössbauer studies of57Fe doped single crystals of GdBa2Cu3O7-δ . Z. Physik B - Condensed Matter 91, 139–143 (1993). https://doi.org/10.1007/BF01315227

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  • DOI: https://doi.org/10.1007/BF01315227

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