Abstract
The specific heat of lutetium metal has been measured between 3 and 25°K. By assuming 11.27T mJ/mole °K for the electronic contribution, the Debye temperature ΘD has been calculated and is presented as a function of temperature. ΘD drops off quite rapidly from its 0°K value of 210°K, as is common in hcp metals, and reaches a minimum of 158°K at T25°K.