Thermodynamic properties of tungsten ditelluride (WTe2) I. The preparation and lowtemperature heat capacity at temperatures from 6 K to 326 K

Abstract

The heat capacity of the dichalcogenide: tungsten ditelluride, WTe2, was measured over the temperature range 5.5 T/K Cp m occurs in the region 92 T/K Sm = (0.10±0.02) · R. The anomaly coincides with the temperature range where all the translational, librational, and internal vibrational modes become fully excited. The electronic molar heat capacity Tγm = (5.99±1.83) mJ · K-1·mol-1 and, for the lattice, the Debye characteristic temperature ΘD = (133.8 ± 0.06) K. Standard molar thermodynamic functions are presented at selected temperatures from 5 K to 335 K.