Ab-initio studies of a half-metallic ferromagnetic behavior in Ga[formula omitted]Mn[formula omitted]Co[formula omitted]N ([formula omitted] 3% and 6%)

Abstract

The half-metallic ferromagnetic of Gallium nitride doped with double impuritiesGa1−2xMnxCoxN (x=3% and 6%) has been investigated by means of first principles investigation combined with Monte Carlo Simulation. The stability of the ferromagnetic state is investigated by comparing the total energies to the spin-glass state. The exchange interactions obtained from first principle calculations and used in a classical Ising model by a Monte Carlo approach resulted in half-metallic ferromagnetic states with high Neel temperature.