Extended Data Fig. 4: X-ray diffraction patterns from Ca[Si0.6Ti0.4]O3 perovskite.
From: Seismic velocities of CaSiO3 perovskite can explain LLSVPs in Earth’s lower mantle
a, Complete diffraction pattern of the Ca[Si0.6Ti0.4]O3 sample as a function of temperature at about 12 GPa, with diffraction intensity indicted by colour scaling. b–h, Magnified panels from a focusing on the temperature evolution of the 311, 222, 400, 422, 440, 620 and 444 diffraction peaks (b–h, respectively; indexed using a cubic lattice with a ≈ 7.3 Å), demonstrating the change in thermal expansivity between cubic and tetragonal/monoclinic structures, and allowing visual identification of the observed phase transitions.
