The heat capacity of Gd metal has previously been measured over the temperature range 15 to 355°K by M. Griffel et al. In this note, the $\gamma$ coefficient (16×${10}^{-4\mathrm{}}$ cal/g atom ${\mathrm{deg}}^2$ in the original work) used in calculating the electronic specific heat of Gd has been replaced by the more recent value of 22×${10}^{-4\mathrm{}}$, cal/g atom ${\mathrm{deg}}^2$. This leads to a slightly higher calculated Debye temperature and a subsequent readjustment of the lattice-specific-heat term. In addition, an error was discovered in the evaluation of the thermodynamic functions, particularly the (${S_T}^0$) term. A Simpson's-rule integration procedure was applied to the original heat-capacity data and the thermodynamic functions were re-evaluated. These changes lead to a magneticentropy calculation considerably closer to the complete spin-order entropy, RIn8, than was reported in the original work.

• Received 16 March 1966

DOI:https://doi.org/10.1103/PhysRev.149.489