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LaAg x In1−x

II. Phonon dispersion, elastic constants and structural instability

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Zeitschrift für Physik B Condensed Matter

Abstract

The phonon dispersion of LaAg x In1−x (x=1, 0.89, 0.8) has been studied by inelastic neutron scattering in the cubic high temperature phase. A soft mode behaviour was observed at theM-point. The doubling and the cubic to tetragonal deformation of the elementary cell was observed through the phase transition. The measurements of the elastic constants were extended to 450 K and their magnetic field dependence was investigated.

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Authors and Affiliations

  1. Institut für Physik, Johannes Gutenberg Universität, Postfach 3980, D-6500, Mainz, Federal Republic of Germany

    K. Knorr

  2. Institut für Angewandte Kernphysik 1, Kernforschungszentrum Karlsruhe GmbH, Postfach 3640, D-7500, Karlsruhe, Federal Republic of Germany

    B. Renker

  3. Physikalisches Institut der Universität Frankfurt a.M., Robert-Mayer-Straße 2–4, D-6000, Frankfurt/Main 1, Federal Republic of Germany

    W. Assmus, B. Lüthi & R. Takke

  4. Institut Max von Laue-Paul Langevin, 156 X, F-38042, Grenoble, France

    H. J. Lauter

Authors
  1. K. Knorr
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  2. B. Renker
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  3. W. Assmus
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  4. B. Lüthi
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  5. R. Takke
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  6. H. J. Lauter
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Additional information

This work was supported by the BMFT and the Sonderforschungsbereich 65 Darmstadt/Frankfurt

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Knorr, K., Renker, B., Assmus, W. et al. LaAg x In1−x . Z. Physik B - Condensed Matter 39, 151–158 (1980). https://doi.org/10.1007/BF01301521

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  • DOI: https://doi.org/10.1007/BF01301521

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