Abstract
The normal modes of vibration in a Mo-Ru alloy were measured at 296K using inelastic neutron scattering. The resulting frequency-wavevector dispersion relations are compared with the pure Mo results of Powell, Martel and Woods (1968). The primary deviation is at the zone-boundary point H where a dip in the frequency curve is accentuated with the addition of Ru. A Born-von Karman analysis is attempted but is unable to specify which force-constant changes are significant, suggesting the importance of longer-range electronic effects on the spectra.
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