A First-Principles method is used to calculate the electronic, structural, and magnetic properties of the semiconductors FexGa1-xN alloys by taking the concentrations x= 0, 0.25, 0.50, 0.75, 1.0 in the zincblende structure (ZB), using a selfconsistent full-potential linearized augmented plane-wave (FP-LAPW) method within the local-spin-density functional approximation (LSDA) and the generalized gradient approximation (GGA).