Figure Captions • FIG. 1: Total energy (in eV per formula unit) versus the atomic volume (in ˚ A $^{3}$) for InNCo$_{3}$ (upper panel) InNNi$_{3}$ (lower panel). • FIG. 2: (Color online) Electronic band structures obtained with GGA for the majority (red solid line) and minority (blue dashed line) spins of (a) InNCo$_{3}$ and (b) InNNi$_{3}$. • FIG. 3: Total and partial density of states (DOS) of InNCo$_{3}$ (left panel) and InNNi$_{3}$ (right panel) obtained with the spin-polarized GGA calculations. • FIG. 4: Charge density contours of the (110) plane for (a) InNCo$_{3}$ and (b) InNNi$_{3}$ obtained with the spin-polarized GGA calculations. 14