Figure 4
(a) Linear pressure evolution of Ag Raman mode with a slope change at 3.4 GPa; (b) FWHM of Ag Raman mode showing a minimum at 3.4 GPa; and (c) relative integrated intensity of the Ag Raman mode with respect to the ambient pressure value show an abrupt jump at 3.4 GPa indicating a change in polarization of the above said mode.
