Study of phonon eigenfrequencies in ternary transition metal‐metalloid Fe₄₀Ni₄₀B₂₀ glass

Abstract

The study of the ternary Fe40Ni40B20 metal-metalloid glass has been made through a partial pair-potential approach. Six partial pair potcntials of this ternary glass have been computed using pseudopotential-based interatomic forces. In particular, the model employed here for the calculation of the potential is in analogy with the three-partial-structure-factor approach of Sietsma and Thijsse with the assumptions that Fe and Ni atoms have identical distributions with respect to like neighbours and hence the partial pair potentials of Fe-B and Ni-B are identical. The calculated effective pair potential using the partial pair potentials is then ernployed to investigate the longitudinal and transverse phonon eigenfrequencies. Further, from the elastic part of the frequency spectrum, elastic and thermal properties have been computed. The computed results for these properties are found to be in good agreement with the available cxperiment a1 results .