title: Thermodynamic properties of liquid gallium from picosecond acoustic velocity measurements.
abstract: Due to discrepancies in the literature data the thermodynamic properties of liquid gallium are still in debate. Accurate measurements of adiabatic sound velocities as a function of pressure and temperature have been obtained by the combination of laser picosecond acoustics and surface imaging on sample loaded in diamond anvil cell. From these results the thermodynamic parameters of gallium have been extracted by a numerical procedure up to 10 GPa and 570 K. It is demonstrated that a Murnaghan equation of state accounts well for the whole data set since the isothermal bulk modulus BT has been shown to vary linearly with pressure in the whole temperature range. No evidence for a previously reported liquid-liquid transition has been found in the whole pressure and temperature range explored.
authors.affiliation: Institut de Minéralogie de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Université Pierre et Marie Curie Paris 6, CNRS UMR 7590, Muséum National d'Histoire Naturelle, IRD UMR 206, BC 115, 4 place Jussieu, 75252 PARIS Cedex 05 France.
authors.forename: S
authors.initials: S
authors.lastname: Ayrinhac
authors.forename: M
authors.initials: M
authors.lastname: Gauthier
authors.forename: G
authors.initials: G
authors.lastname: Le Marchand
authors.forename: M
authors.initials: M
authors.lastname: Morand
authors.forename: F
authors.initials: F
authors.lastname: Bergame
authors.forename: F
authors.initials: F
authors.lastname: Decremps