  The effect of the anisotropy in the exchange interaction on the phase
diagrams and magnetization behavior of the Heisenberg thin film has been
investigated with effective field formulation in a two spin cluster using the
decoupling approximation. Phase diagrams and magnetization behaviors have been
obtained for several different cases, by grouping the systems in accordance
with, whether the surfaces/interior of the film have anisotropic exchange
interaction or not. Particular attention has been paid on the evolution of the
special point coordinate with the anisotropy in the exchange interaction. It
has been concluded that for increasing ratio of the anisotropies in the
exchange interaction between the surface and interior of the film, special
point disappears at a special value of this ratio.
