A description of the thermodynamic properties of pure indium in the solid and liquid states from 0 K

Thermodynamic data for the crystalline phase of indium were critically assessed using an extended Einstein model from 0 K. The heat capacity between 6 K and 354 K was measured using an automated vacuum adiabatic calorimeter to compensate for a lack of published data between 21 K and 273 K. Data for the liquid phase were described using a two state model. During the assessment, careful analysis of the experimental data was carried out. In order to derive a precise value for So298 an additional technique using multiple Einstein functions was used, which allows the experimental heat capacity and enthalpy data for the solid phase to be approximated accurately from 0 K up to the melting point.