  We study numerically the one dimensional ferromagnetic Kondo lattice, a model
widely used to describe nickel and manganese perovskites. By including a
nearest neighbor Coulomb interaction (V) and a superexchange interaction
between the localized moments (K), we obtain the phase diagram in parameter
space for several dopings at T=0. Due to the competition between double and
superexchange, we find a region where the formation of magnetic polarons
induces a charge ordered (CO) state which survives also for V=0. This mechanism
should be taken into account in theories of charge ordering involving spin
degrees of freedom.
