Specific Heats of Nickel and Cobalt at Low Temperature

Critical analysis of the heat-capacity data of the literature and evaluation of thermodynamic properties of copper, silver, and gold from 0 to 300 oK

“…The values of y and 0o(O) reported are among the lower group of values published on gold. Will and Green [115] used the heatcapacity equation of the form C = yT + AT 3 + BT 5 to fit their data, the coefficient of the T 5 term being found to be negative {B--0.00108 + 0.00007 mj°K -6 mol -1 ) similar to that reported by Isaacs [61,101]. Will and Green [115] found Martin's results [78] to fit the three-term equation.…”

“…The comparison of the Debye characteristic temperatures, 0i>{T), of the selected values of heat capacity of copper, silver, and gold in the range 0 to 300°K. The values of di>(T) were calculated from the relations Cv = C,,-yT -AC'f,T and D(6/T) = CJ3R 5. References…”

“…The values reported at the higher temperatures deviate by larger amounts from the expected values. Aoyama and Kanda [5] reported measurements from 82 to 273°K on a sample of 99.92 percent purity, major impurities being Fe, C, and S at 0.02, 0.01, and 0.003 percent, respectively. The vacuum adiabatic method was used.…”