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.
Concentration dependence of the phonon dispersion relations in substitutional fcc Co-Ni alloys
SACCHETTI, Francesco;
1975
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.File in questo prodotto:
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