A 2D model to study the effect of crystal orientation on interfacial struct
ural misfit and Co grain defect density for hcp Co/bcc Cr thin him system h
as been introduced. The magnitude of misfit depends strongly on the Co/Cr o
rientation, their respective lattice parameters, the grain size and to a Le
sser extend, the relative lattice orientation across the interface. However
, the modeling results showed that by introducing lattice defects such as f
ee stacking faults and misfit dislocations in the Co layer, one can greatly
reduce this misfit and relax the interface.