Thermodynamic functions for heavy rare-earth hexaborides as measured by calorimetry in the temperature range from 5 to 300 K

The molar heat capacities of gadolinium, terbium, and dysprosium hexaboride s were measured over the temperature range 5-300 K. The temperature depende nces and the standard values of the enthalpy, entropy, and the Gibbs energy were calculated by taking into account the nuclear contribution to the hea t capacity.