Debye Temperature for Cadmium Derived from Low-Temperature Specific-Heat Measurements

The low-temperature specific heat of cadmium in its normal state has been measured between 1.5 and about 4.2^∘{}K and may be expressed in the form C=γT+αT³+βT⁵. Using as the electronic specific-heat coefficient, γ, the value of 0.6845±{}0.0109 mJ deg^-2 (mole)^-1 recently reported by Martin for the temperature range 0.4 to 1.5^∘{}K, the other coefficients are: α=0.1837±0.0070 mJ deg^-4 (mole)^-1 and β=0.0098±0.0010 mJ deg^-6 (mole)^-1. The calorimetric Debye temperature, Θ₀C, is 219.5±{}2.7^∘{}K which agrees satisfactorily with the elastic value, Θ₀E, of 213±{}1^∘{}K. In the light of this agreement, the apparent discrepancies between Θ₀C and Θ₀E for cadmium cited in earlier literature are probably not significant.