Figure 1
From: Novel triadius-like N4 specie of iron nitride compounds under high pressure
(a) Formation enthalpies (ΔH) of various Fe-N compounds with respect to decomposition into constituent elemental solids at 0–300 GPa. Data points located on the convex hull (solid lines) represent stable species against any type of decomposition. (b) Pressure ranges in which the corresponding structures of FeN, FeN2 and FeN4 are stabilized.
