The ordering in III-Nitride ternary alloys is investigated with evolutionary prediction methods.
Energetically preferable configurations are determined for the full range of compositions.
Highly ordered structures at x = 0.25, 0.50 and 0.75 induce minima on the formation enthalpy.
Results are verified by large scale molecular dynamics calculations.
The bandgaps of the ternary alloys are calculated and new composition-dependent bowing parameters are established.