  All the simulations were carried out for sc(001) film with three (N=3)
layers. The effect of applied magnetic field and stress induced anisotropy on
energy of ultra-thin ferromagnetic films has been investigated using Heisenberg
Hamiltonian with second order perturbation. The energy becomes minimums at
certain values of angles, applied magnetic field and stress, by indicating that
film can be easily oriented in theses certain directions by applying particular
applied magnetic field or stress. For example, when applied magnetic field
perpendicular to film plane is 3.6, the film can be easily oriented along 0.97
and 2.65 radians directions. When in plane applied magnetic field is 3, energy
minimums can be detected at 1 and 2.6 radians. When applied stress is 2.7, film
can be easily oriented in 2.8 direction.
