Low temperature heat capacity and thermodynamic standard values at 298.15 of β-eucryptite (LiAlSiO4)

We report measurements of the heat capacity of the one-dimensional ionic conductor β-eucryptite (LixAlxSi1−2xO4) over the temperature range 1.5–320 K. The entropy and enthalpy at 298.15 K were found to be S°(298.15)=(105.34±0.7) J/mol K and H°(298.15)=(21406.5±8) J/mol. The data are compared with specific heat results, reported in the literature for different temperature ranges.