  Heterostructures made of itinerant ferromagnets and superconductors are
studied. In contrast to most previous models, ferromagnetism is not enforced as
an external Zeeman field but induced in a correlated single-band model (CSBM)
that displays itinerant ferromagnetism as a mean-field ground state. This
allows us to investigate the influence of an adjacent superconducting layer on
the properties of the ferromagnet in a self-consistent Bogoliubov-de Gennes
approach. The CSBM displays a variety features not present in the Zeeman
exchange model that influence the behavior of order parameters close to the
interface, as e.g. phase separation and the competition between magnetism and
superconducting orders.
