The transport properties of Ca, Sr and Ba

Abstract
Values are presented for the electrical resistivity, thermal conductivity and thermopower of Ca, Sr and Ba for specimens of commercial purity. The data which extend from 40 K to 300 K for Sr and Ba and from 325 K to 425 K for Ca, are largely unique in that no data have previously been published for the thermal conductivity of any of these metals, nor the thermopower of Sr and Ba. Analysis of the data indicates that the Wiedemann-Franz law is not obeyed at high temperatures, which indicates the presence of strong band effects. In this respect these metals resemble the transition metals more than the other polyvalent metals or the noble metals.

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