Physical properties of MgO at deep planetary conditions

  title={Physical properties of MgO at deep planetary conditions},
  author={Riccardo Musella and Stephane Mazevet and François Guyot},
  journal={Physical Review B},
Using ab initio molecular dynamics simulations, we calculate the physical properties of MgO at conditions extending from the ones encountered in the Earth mantle up to the ones anticipated in giant planet interiors such as Jupiter. We pay particular attention to the high pressure melting temperature throughout this large density range as this is a key ingredient for building accurate planetary interior models with a realistic description of the inner core. We compare our simulation results with… 

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The melting points of MgO up to 4 TPa predicted based on ab initio thermodynamic integration molecular dynamics

  • T. TaniuchiT. Tsuchiya
  • Chemistry, Physics
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2018
The melting curve of MgO is extended up to 4 TPa, corresponding to the Jovian core pressure, based on the one-step thermodynamic integration method implemented on ab initio molecular dynamics, suggesting no density crossover between liquid and crystal and thus no further denser crystalline phases.


The amount and distribution of heavy elements in Jupiter gives indications on the process of its formation and evolution. Core mass and metallicity predictions, however, depend on the equations of