VIBRATIONAL-SPECTRUM OF PD80SI20 METAL GLASS

Inelastic neutron scattering can be used to measure the energy spectrum of the normal modes of vibration of a glass. We present measurements of the spectrum for the metal-metalloid glass Pd80Si20 at 300 K. They show a principal peak around 23 meV energy followed by a rapid fall. In these respects they closely resemble the known spectrum from crystalline pure palladium. We conclude that the inter-metallic forces in the metal-metalloid glass are not greatly modified from those in the crystalline form of the metal constituent. © 1979.