Phonon dispersion of Fe-30%Mn alloy

The angular force model of Clark, Gazis and Wallis (CGW) have been applied to calculate the phonon frequencies of antiferromagnetic Fe-30%Mn alloy. Fu rthermore, the second order elastic constants of the alloy have been comput ed using a new empirical many body potential (MBP), which has been develope d by Akgun and Ugur. The parameters defining the MBP for the alloy have bee n computed following a procedure given by Akgun and Ugur. The computed elas tic constants have been used to calculate the phonon frequencies of the all oy. Finally the theoretical results have been compared with the correspondi ng experimental values.