FIG. 2. Supercells used for the simulation of the (001) CoPt thin lms where the blue and magenta spheres correspond respectively to the Co and Pt atoms: (a) Pure Co surface, (b) pure Pt surface, (c) Co stacking fault, (d) Pt stacking fault, (e) Pt anti-site and (f) Co anti-site. In the latter two cases, numbers 1 and 2 refer to atoms with dierent magnetic moments. For each case, the number of (CoPt) sequences, X, is given.

FIG. 2. Supercells used for the simulation of the (001) CoPt thin lms where the blue and magenta spheres correspond
respectively to the Co and Pt atoms: (a) Pure Co surface, (b) pure Pt surface, (c) Co stacking fault, (d) Pt stacking fault, (e)
Pt anti-site and (f) Co anti-site. In the latter two cases, numbers 1 and 2 refer to atoms with dierent magnetic moments. For
each case, the number of (CoPt) sequences, X, is given.