Generalized stacking faults were investigated by using a parametrized tight-binding potential. The stacking-fault energies were estimated to be in good agreement with experimental data; except in the case of Al. It was found that the stacking-fault energies of Pt could be reduced by 14%, by atom relaxation, while the effect of atom relaxation upon the stacking-fault energies of Al, Pd, Ir and Rh was small. It was concluded that the effect of atom relaxation upon stacking-fault energies was important; especially for an alloy system where the radius difference between 2 constituent elements was large.

Structure and Stacking-Fault Energy in Metals Al, Pd, Pt, Ir and Rh. J.Cai, F.Wang, C.Lu, Y.Y.Wang: Physical Review B, 2004, 69[22], 224104 (4pp)