Computational study of some seismic observations through compounds (Mgx,Ca(1-x))O at PREM model pressures up to 135.75 GPa

This computational study aims to track the change of some seismic observations by (Mgx,Ca(1-x))O compounds, this was at the PREM model pressures representing of Earth’s material. Based on the link between seismology and metallurgy in addition the Hashin & Shtrikman relationships, with taking into the results of our previous study, especially magnesium and calcium oxides. We were able to study the change in the values of density, bulk and shear modulus, longitudinal, transversal and bulk sound waves velocity of these compounds, with the change of x from a percentage to a hundred thousand. We were able to identify the compounds that he evaluated for those parameters very close to that of the Earth’s material at the pressures of the PREM model, especially at the most important spacing between the Earth’s internal layers until to the limits of the Earth's outer core. But not a single compound has been found to match all values once, meaning that no compound can be found in Earth's deep layers.