96 citations · 266 across the 12 of their papers we have counts for
12 papers
Pressure-Temperature Phase Diagram and -Transition in Liquid Sulfur
Sonia Salomoni, Frédéric Datchi, A. Marco Saitta +1
Using molecular dynamics simulations driven by a machine-learned interatomic potential, we investigate at low to intermediate pressures the -transition of sulfur, a temperature-…
Observation of hexagonal close-packed water ice at conditions in ice giant planetary interiors
Alexis Forestier, Gunnar Weck, Sandra Ninet +4
Using synchrotron x-ray diffraction in laser-heated diamond anvil cells, we report the observation of an hexagonal close-packed (hcp) phase of water ice at high pressure and temper…
Melting curve of black phosphorus: evidence for a solid-liquid-liquid triple point
Hermann Muhammad, Mohamed Mezouar, Gaston Garbarino +6
Black phosphorus (bP) is a crystalline material that can be seen as ordered stackings of two-dimensional layers, which lead to outstanding anisotropic physical properties. The know…
High pressure-temperature phase diagram of ammonia hemihydrate
L. Andriambariarijaona, F. Datchi H. Zhang, K. Béneut +3
We report a comprehensive experimental investigation of the phase diagram of ammonia hemihydrate (AHH) in the range of 2-30 GPa and 300-700 K, based on Raman spectroscopy and x-ray…
Anisotropic thermo-mechanical response of layered hexagonal boron nitride and black phosphorus: application as a simultaneous pressure and temperature sensor
Hermann Muhammad, Mohamed Mezouar, Gaston Garbarino +6
Hexagonal boron nitride (hBN) and black phosphorus (bP) are crystalline materials that can be seen as ordered stackings of two-dimensional layers, which lead to outstanding anisotr…
Metallization of Shock-Compressed Liquid Ammonia
A. Ravasio, M. Bethkenhagen, J. -A. Hernandez +8
Ammonia is predicted to be one of the major components in the depths of the ice giant planets Uranus and Neptune. Their dynamics, evolution, and interior structure are insufficient…
A density-driven first-order phase transition in liquid sulfur
Laura Henry, Mohamed Mezouar, Gaston Garbarino +3
First-order phase transitions are characterized by a discontinuous first derivative of the Gibbs free energy, so that volumes and entropies are discontinuous. Such transitions are…
Ionic ammonia ice
S. Ninet, F. Datchi, P. Dumas +6
We report experimental and theoretical evidence that solid molecular ammonia becomes unstable at room temperature and high pressures and transforms into an ionic crystalline form.…
High pressure-high temperature phase diagram of ammonia
Sandra Ninet, Frédéric Datchi
The high pressure(P)-high temperature(T) phase diagram of solid ammonia has been investigated using diamond anvil cell and resistive heating techniques. The III-IV transition line…
Equation of state of cubic boron nitride at high pressures and temperatures
Frédéric Datchi, Agnès Dewaele, Yann Le Godec +1
We report accurate measurements of the equation of state (EOS) of cubic boron nitride by x-ray diffraction up to 160 GPa at 295 K and 80 GPa in the range 500-900 K. Experiments wer…
New insights on the high-pressure phase diagram of molecular CO2
Valentina M. Giordano, Frédéric Datchi
We report the discovery of a new molecular phase of carbon dioxide at high-pressure and high-temperature. Using x-ray diffraction, we identify this phase as the theoretically predi…
Melting curve and fluid equation of state of carbon dioxide at high pressure and high temperature
Valentina M. Giordano, Frédéric Datchi, Agnès Dewaele
The melting curve and fluid equation of state of carbon dioxide have been determined under high pressure in a resistively-heated diamond anvil cell. The melting line was determined…