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Valence state and magnetic interactions in magnetically ordered Eu(Pd1−x Au x )2Si2

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Zeitschrift für Physik B Condensed Matter

Abstract

X-ray diffraction,151Eu Mössbauer effect (ME) and magnetic susceptibility measurements have been performed to investigate the valence behavior and the magnetic interactions of the Eu ions in the intermetallic series Eu(Pd1−x Au x )2Si2 (0≦x≦1) as a Forx>0.4 all experimental techniques are in agreement with each other and suggest a divalent 4f 7 ground state of the Eu ion. Belowx=0.4 the different methods lead to different results: while the lattice parameters and the ME isomer shift suggest an instable behavior of the valence the magnetic susceptibility proves a pure divalent 4f 7 ground state. These differences can be explained by assuming a partial extension of the 4f-shell radius such that the localized character of the 4f-electrons is preserved.

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Authors and Affiliations

  1. Institut für Experimentalphysik IV, Ruhr-Universität, Universitätsstrasse 150, D-4630, Bochum, Federal Republic of Germany

    M. M. Abd-Elmeguid

  2. Institut für Festkörperforschung, KFA Jülich, Postfach 1913, D-5170, Jülich 1, Federal Republic of Germany

    Ch. Sauer, U. Köbler & W. Zinn

Authors
  1. M. M. Abd-Elmeguid
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  2. Ch. Sauer
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  3. U. Köbler
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  4. W. Zinn
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Dedicated to B. Mühlschlegel on the occasion of his 60th birthday

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Abd-Elmeguid, M.M., Sauer, C., Köbler, U. et al. Valence state and magnetic interactions in magnetically ordered Eu(Pd1−x Au x )2Si2 . Z. Physik B - Condensed Matter 60, 239–248 (1985). https://doi.org/10.1007/BF01304444

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  • DOI: https://doi.org/10.1007/BF01304444

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