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(a) Measured volume of Si-I as a function of pressure compared to previous experimental studies6,10,24,36. (b) Percentage error between the measured and fitted volume of the present data using a Vinet EOS with V0 = 20.031 Å3/atom, K0 = 97.89 GPa and \({K}_{0}^{\text{'}}\) = 4.24.