  A detailed numerical analysis of the magnetization reversal processes in
multisegmented nanowire arrays was developed. The nanowires have a long aspect
ratio and are formed by magnetic and non-magnetic sections alternately arranged
in such a way that the array resembles magnetic layers separated by
non-magnetic layers. Attention has been focused on the influence of
magnetostatic interaction in the magnetic pattern formation of these magnetic
nanostructures. Results from a magnetic correlation function among layers show
that three different reversal modes can be detected depending on the number and
distance between the magnetic segments. As a consequence of the different
reversal modes, a non-monotonic behavior of the annihilation field in function
of the distance between the layers is evidenced. Thus, these results are
important for the production of magnetic devices with multisegmented nanowire
arrays.
