A New Phase of GaN

Figure 3

The directional dependence of Young’s modulus for Pnma-GaN (a), 2D representation of Young’s modulus for Pnma-GaN in the plane, plane, and plane (b). The directional dependence of Young’s modulus for wurtzite-GaN (c), 2D representation of Young’s modulus for wurtzite-GaN in the plane, plane, and plane (d). The units of axes are all in GPa.

(a) Pnma

(b) Pnma

(c) P6₃mc

(d) P6₃mc