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We investigate the existence of several (anti-)ferromagnetic phases in thediluted ferromagnetic Kondo-lattice model, i.e. ferromagnetic coupling of localmoment and electron spin. To do this we use a coherent potential approximation(CPA) with a dynamical alloy analogy. For the CPA we need effective potentials,which we get first from a mean-field approximation. To improve this treatmentwe use in the next step a more appropriate moment conserving decouplingapproach and compare both methods. The different magnetic phases are modelledby defining two magnetic sublattices. As a result we present zero-temperaturephase diagrams according to the important model parameters and differentdilutions.

The ground state phase diagram of the diluted ferromagnetic Kondo-lattice model