Isothermal compressibility and sound velocity of liquid rare earth metals

Abstract

The simple one-component plasma (OCP) model has been applied to the isothermal compressibilities of liquid rare earth metals. The calculated results are in fair agreement with those estimated from the long-wavelength limit of liquid structure factors and the well-known relation between the isothermal compressibility and the surface tension. The velocity of sound has been calculated by the Percus-Yevick (PY) phonon model using recently measured low-angle structure data. The OCP model appears to provide a fair description of the thermodynamic properties of liquid rare earth metals.