Abstract
The Faraday method is used to measure the temperature dependence of magnetic susceptibility χ(T) of pyrite and arsenopyrite in the temperature interval 20–800°C and the magnetic susceptibility of chalcopyrite in the temperature interval 500–900°C. The complicated character of dependence χ(T) is interpreted. The paramagnetic characteristic of the samples is determined via the least-squares processing. It is demonstrated that dependence χ−1(T) of the samples in the paramagnetic phase obeys the Curie-Weiss law and that the magnetic properties of iron weaken in the presence of nonmagnetic elements (S, As, and Cu).
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