Critical Analysis of the Thermodynamic Data for Pt and a Prediction ofΘDW(T)

The available thermodynamic data for Pt are reviewed. A ${\Theta }^c\mathrm{}\left(T\right)\mathrm{}$ curve is constructed, and anharmonicity and volume expansion are explicitly allowed for. Values of ${〈{\omega }^n〉}_{\mathrm{av}}$ for both positive and negative $n$ are derived and correlated in the usual way, by constructing a Barron plot. The ${\Theta }_{\mathrm{DW}}\mathrm{}\left(T\right)\mathrm{}$ versus $T$ curve is constructed by using a Padé approximant to link the high- and the low-temperature expansion. The resultant ${\Theta }_{\mathrm{DW}}\mathrm{}\left(T\right)\mathrm{}$ is corrected for the volume expansion. Other anharmonic effects in ${\Theta }_{\mathrm{DW}}\mathrm{}\left(T\right)\mathrm{}$ are neglected for $T\lesssim \Theta$. We find ${\Theta }_{\mathrm{DW}}\mathrm{}\left(O\right)=(232\mathrm{}\pm 3)°$K and ${\Theta }_{\mathrm{DW}}\left(\infty \right)=(231\mathrm{}\pm 3)°$K. These results are compared with experiment in the preceding paper by Harris, Benczer-Koller, and Rothberg.