Figure 1
Examples of Le Bail fits (red lines), backgrounds (green dashed lines) and residuals (blue lines) for X-ray diffraction data (plus signs) collected in this study. Both patterns are at 17.7 (5) GPa. (a) The Pmmn-NiSi sample and (b) the Au standard. Tick marks represent reflections of, from top to bottom, fcc-Ne, B20-NiSi and Pmmn-NiSi in (a) and fcc-Ne, fcc-Au and hcp-Re (from the gasket; hcp denotes hexagonal close packed) in (b). |