Concentration dependence of the phonon dispersion relations in substitutional fcc Co-Ni alloys
- 15 September 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 12 (6), 2253-2259
- https://doi.org/10.1103/physrevb.12.2253
Abstract
The concentration dependence of the phonon dispersion relations in fcc Co-Ni alloys have been determined by means of triple-axis spectrometry. Appreciable wave-vector-dependent frequency changes from pure Ni have been observed in this alloy system where practically no mass disorder is present because of the near-equal average mass of the costituents. The observed frequency shifts are discussed in connection with other experiments in similar alloy systems and with some estimates based on existing theories.Keywords
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