We have developed a three-body potential based on a two-body model potential and applied it, as an application, to reproduce the experimental phonon frequencies of the fcc Pd -10% Fe alloy. For this purpose twoand three-body interactions have been employed to develop the dynamical matrix of the fcc structure. The parameters defining the twoand three-body potentials for Pd and Fe have been evaluated for the fcc structure at the lattice constant of the alloy. The radial, tangential, and three-body force constants of the alloy have been calculated by the concentration averages of the computed force constants of the component metals. Finally, the phonon frequencies of the alloy along the principal symmetry directions have been computed using the calculated force constants. The theoretical results are in good agreement with the corresponding experimental values.

No abstract

No abstract

No abstract

No abstract