Figure 1
(a–c) XRD patterns collected at ambient conditions with a copper radiation target. SEM images corresponding to (a,b) are shown in (d,e). The run product in (a,d) is phase–pure hexagonal δ–MoN synthesized at ~5 GPa and ~1300 °C for 20 min. (b,e) show mixed γ– and δ–MoN phases synthesized at 3.5 GPa by program–controlled heating for 3 hours (see Experimental Section). (c) Cubic γ–MoN0.86 obtained from re–sintering of phase–pure δ–MoN in (a,d) at ~5 GPa and ~2200 °C for 15 s. Insets show polyhedral views of crystal structures for δ and γ phases.
