Extended Data Fig. 4: Adiabatic bulk modulus and shear modulus of bridgmanite (Mg_0.9Fe_0.1Si_0.9Al_0.1)O₃ at high pressure.

a, K_S; b, G. Red data points are results using our obtained full elastic constants (C_ij); black data points are data reported in Kurnosov et al.³. Black and red dashed lines are the best fits to data from Kurnosov et al.³ and this study, respectively. Error bars represent standard deviations (1σ) and are not shown when smaller than the symbols. In this study, the adiabatic bulk modulus at ambient conditions (K_S0) is 250(1) GPa, with the pressure derivative of K_S at 300 K (K_S^′) = 3.2(2), while the shear modulus at ambient conditions (G₀) is 159(1) GPa, with the pressure derivative of G₀ at 300 K (G′) = 2.2(1).