Figure 4

Phonon-dispersion curves of predicted structures.
(a) P-1, (b) P6/mmm and (c) C2/m at 40 GPa, 100 GPa and 300 GPa, respectively.

Phonon-dispersion curves of predicted structures.
(a) P-1, (b) P6/mmm and (c) C2/m at 40 GPa, 100 GPa and 300 GPa, respectively.