Figure 9.

Calculated powder diffraction pattern of the fcc structures with stacking faults. The Debyer package⁶² was used to obtain the powder patterns, and the calculation is based on the Debye scattering equation.⁶³ The temperature and pressure are taken to be the experimental conditions for direct comparison. The wavelength is taken to be 0.7 Å so that the powder diffraction pattern of the fcc structure at 3 GPa is identical to the experimental one in Fig. 1 of Ref. 61. SF fcc means fcc with a stacking fault.