Abstract
The magnetic and thermoelectric properties of single-crystal Ni 0.786Te with NiAs/Cd(OH) 2-type structure were determined. The weak paramagnetism was found to be independent of temperature, whereas the negative Seebeck coefficient passed through a mavimum at about 160 K. The concentration dependence was determined by measurements on a series of polycrystalline samples at room temperature. In contrast with the smooth variation in the magnetic susceptibility with composition, the Seebeck coefficient showed more complev behaviour. The lattice parameter c passed through a flat mavimum near the nickel-rich phase boundary at about 55 at.% Te and the avial ratio c a through a very pronounced mavimum at about 61 at.% Te. The results are discussed in terms of the transition from the NiAs-type to the Cd(OH) 2-type structure as proposed in the literature.
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