Heat Capacity of Scandium from 1 to 23°K

Abstract

The heat capacity $C_p$ of a well-characterized, polycrystalline scandium sample was measured from 0.9 to 23°K. The results are in reasonable agreement with previous measurements below 4°K, except that a small anomalous addendum to the heat capacity was detected, which is believed to be due to small concentrations of magnetic impurities in the sample. The results below 8.4°K after correction for the effect of impurities could be represented by the equation $C_p=\gamma T+\left(\frac{12R{\pi }^4}{5}\right){\left(\frac{T}{\Theta }\right)}^3$, where $\gamma =10.66\mathrm{}\pm 0.10$ mJ ${\mathrm{deg}}^{-2\mathrm{}}$ ${\mathrm{}(\mathrm{g}\mathrm{at}.\mathrm{})\mathrm{}}^{-1\mathrm{}}$ and $\Theta =359.5\mathrm{}\pm 4.2°$K. A table of smoothed heat capacities and thermodynamic functions for scandium at selected temperatures between 5 and 298.15°K is presented.