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Mixed valence on dilute Eu in YCu2Si2

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Zeitschrift für Physik B Condensed Matter

Abstract

We report measurements of electrical resistivity, thermopower, thermal conductivity, magnetic susceptibility, Mößbauer andL III x-ray absorption of intermediate valent Eu in Y1−x Eu x Cu2Si2 alloys withx=0.03,x=0.07 andx=0.10. A qualitative comparison of the physical properties of dilute Eu in YCu2Si2 with concentrated Eu in EuCu2Si2 shows only slight differences; the dominant feature is a very strong variation of the Eu valence with temperature, from about 2.8 at 4 K to about 2.45 at 800 K, in the concentrated compound as well as in the dilute alloys.

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Authors and Affiliations

  1. II. Physikalisches Institut, Universität Köln, Zülpicher Strasse 77, D-5000, Köln 41, Federal Republic of Germany

    B. Bittins, K. Keulerz, W. Boksch, J. Rohler, H. Schneider, P. Weidner & D. Wohlleben

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

    A. Scherzberg

  3. Centre de Recherches Nucléaires, Université Louis Pasteur, F-67307, Strasbourg Cedex, France

    J. P. Sanchez

  4. DPMC Section Physique, Université de Genève, CH-1211, Genève 4, Switzerland

    H. F. Braun

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  1. B. Bittins
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  2. K. Keulerz
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  4. J. P. Sanchez
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  5. W. Boksch
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  7. J. Rohler
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  8. H. Schneider
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  9. P. Weidner
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Bittins, B., Keulerz, K., Scherzberg, A. et al. Mixed valence on dilute Eu in YCu2Si2 . Z. Physik B - Condensed Matter 62, 21–29 (1985). https://doi.org/10.1007/BF01303732

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  • DOI: https://doi.org/10.1007/BF01303732

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