Fig. 3
From: Effect of grain size on amorphization mechanism and kinetics of bridgmanite in shocked meteorites
High-temperature behavior of polycrystalline bridgmanite with different grain sizes. The data for the coarse-grained polycrystalline bridgmanite (> 10 μm) are based on a previous study (Nishi et al. 2022). a Bridgmanite peak intensities as a function of temperature. The error bars reflect the standard deviations (1σ) derived taking into consideration the various diffraction peaks. b Variation of relative volume (V/V0) as a function of temperature. The dashed line shows the thermal expansivity of bridgmanite. c Apparent pressure on bridgmanite grains. We did not determine pressure values at temperatures above 750 K due to the weak peak intensities observed