  Second and fourth order anisotropy dependence of energy of thick simple cubic
ferromagnetic films with 10000 layers is explained using Heisenberg Hamiltonian
with second order perturbation in this manuscript. The second and fourth order
anisotropy constants were assumed to be constants through out the film. When
the fourth order anisotropy is given by fourth order anisotropy of 6, the
sc(001) ferromagnetic thick films with 10000 layers can be easily oriented in
0.6 radians direction for the energy parameters given this report. Under the
influence of the second order anisotropy given by second order anisotropy of
6.3, the easy direction of sc(001) film with 10000 layers is given by 0.66
radians. Although the energy varies periodically in all cases, the maximum
energy considerably decreases with fourth order anisotropy constant. According
to 3-D plots, energy under influence of second order anisotropy is larger than
energy under influence of fourth order anisotropy.
