  We utilize the many-body potentials developed by Sutton and Chen(1990) within
the context of the tight-binding approach to study the bulk properties of
metals and metal alloys in molecular dynamics (MD) simulations. In the
simulations of Pt-Rh alloys we used the MD algorithms based on an extended
Hamiltonian formalism from the works of Andersen(1980), Parrinello and
Rahman(1980), Nose(1984), Hoover(1985) and Cagin(1988).The simulator program
that we use generates information about various physical properties during the
run time, along with critical trajectory and stepwise information which need to
be analysed post production. The thermodynamical and mechanical properties are
calculated using the statistical fluctuation expressions over the MD.
