Electrical properties of liquid NiTe alloys with Ni halides

Abstract Liquid NiTe has a large electrical conductivity of 5700 Ω −1 cm−1 at the melting point. The decrease in the conductivity on the NiTe side is about 140 and 230 Ω −1 cm−1 with the addition of 1 mol% NiCl2 and NiI2, respectively. Liquid NiTe and molten NiI2 were found to be miscible in all proportions. Molten NiI2 has a conductivity of 35 Ω −1 cm−1 at 950 °C. The electrical conductivity on the NiI2 side increases gradually with the addition of NiTe. The composition dependence of the thermoelectric power of molten NiTe–NiI2 mixtures increases gradually from −3 μV/K on the NiTe side to 37.5 μV/K on the NiI2 side. The composition dependence of the conductivity and thermoelectric power for molten NiTe–NiI2 mixtures was analyzed by electronic model of liquid semiconductors.