At this point we would like to address the question on how the MCA energy is affected by the relaxation of the lattice. For this purpose, we have calculated the MCA energy of
system at the interfaces (100) and (111) as a function of the rigid relaxation of the lattice. The results are plotted in Fig. 6.12.
The relaxation of the lattice is ranged from to . We observe that in all cases the MCA energy at the interface
(111) is almost an order of magnitude higher than in the case of (100) interface.
The value of the MCA energy is affected by the relaxation of the lattice. For all studied cases, for the interface the MCA suffers an increment when the relaxation of the system is increased. In the systems with interface the behavior is slightly different. Initially when the relaxation is changed from to , the MCA is increased, starting from this point if the relaxation increases, the MCA energy manifests a slight decrease.
The MCA energy,
, calculated for a
as a function of the rigid relaxation parameter .