Abstract
The thermoelectric power of single crystals of pure NaCl and of SrCl2-doped NaCl was measured in the temperature range 550°–755°C using Pt electrodes and a nitrogen atmosphere. The results for the pure crystals differ significantly from previous measurements on polycrystalline material. Current theories of the heterogeneous thermoelectric power do not adequately describe the results. Part, but probably not all, of this discrepancy may be due to errors in transport numbers used, which were calculated from diffusion data. The thermoelectric power of pure NaCl is decreased by heating the crystals in oxygen-containing nitrogen.
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