Ultra-high pressure dynamic compression of geological materials
Dynamic-compression experiments on geological materials are important for understanding
the composition and physical state of the deep interior of the Earth and other planets. These …
the composition and physical state of the deep interior of the Earth and other planets. These …
In situ synchrotron X-ray diffraction in the laser-heated diamond anvil cell: Melting phenomena and synthesis of new materials
The ability to produce high pressures and temperatures (P–T), and study the physical and
chemical properties of solids and melts at these conditions, is possible through the use of …
chemical properties of solids and melts at these conditions, is possible through the use of …
Predicting crystal structures and properties of matter under extreme conditions via quantum mechanics: the pressure is on
E Zurek, W Grochala - Physical Chemistry Chemical Physics, 2015 - pubs.rsc.org
Experimental studies of compressed matter are now routinely conducted at pressures
exceeding 1 mln atm (100 GPa) and occasionally at pressures greater than 10 mln atm (1 …
exceeding 1 mln atm (100 GPa) and occasionally at pressures greater than 10 mln atm (1 …
Machine-Learning Accelerated First-Principles Accurate Modeling of the Solid–Liquid Phase Transition in MgO under Mantle Conditions
While accurate measurements of MgO under extreme high-pressure conditions are needed
to understand and model planetary behavior, these studies are challenging from both …
to understand and model planetary behavior, these studies are challenging from both …
Electrical conductivity and magnetic dynamos in magma oceans of Super-Earths
F Soubiran, B Militzer - Nature communications, 2018 - nature.com
Super-Earths are extremely common among the numerous exoplanets that have been
discovered. The high pressures and temperatures in their interiors are likely to lead to long …
discovered. The high pressures and temperatures in their interiors are likely to lead to long …
Anharmonicity and phase diagram of magnesium oxide in the megabar regime
F Soubiran, B Militzer - Physical Review Letters, 2020 - APS
With density functional molecular dynamics simulations, we computed the phase diagram of
MgO from 50 to 2000 GPa up to 20 000 K. Via thermodynamic integration (TDI), we derive …
MgO from 50 to 2000 GPa up to 20 000 K. Via thermodynamic integration (TDI), we derive …
Shock response and phase transitions of MgO at planetary impact conditions
S Root, L Shulenburger, RW Lemke, DH Dolan… - Physical Review Letters, 2015 - APS
The moon-forming impact and the subsequent evolution of the proto-Earth is strongly
dependent on the properties of materials at the extreme conditions generated by this violent …
dependent on the properties of materials at the extreme conditions generated by this violent …
Decaying shock studies of phase transitions in MgO‐SiO2 systems: Implications for the super‐Earths' interiors
We report an experimental study of the phase diagrams of MgO, MgSiO3, and Mg2SiO4 at
high pressures. We measured the shock compression response, including pressure …
high pressures. We measured the shock compression response, including pressure …
Melting in super-earths
L Stixrude - … Transactions of the Royal Society A …, 2014 - royalsocietypublishing.org
We examine the possible extent of melting in rock-iron super-earths, focusing on those in the
habitable zone. We consider the energetics of accretion and core formation, the timescale of …
habitable zone. We consider the energetics of accretion and core formation, the timescale of …
First-principles calculation of entropy for liquid metals
MP Desjarlais - Physical Review E, 2013 - APS
We demonstrate the accurate calculation of entropies and free energies for a variety of liquid
metals using an extension of the two-phase thermodynamic (2PT) model based on a …
metals using an extension of the two-phase thermodynamic (2PT) model based on a …