Abstract
Thin pyrite films have been prepared by sulphur-assisted magnetron sputtering at deposition temperatures between 88 and 390 °C. The films were microcrystalline, with an average grain size of about 400 Å and a preferential orientation changing from (200) to (111) on going to higher deposition temperatures. The electrical conductivity was degenerate, with σ RT = 4 Ω −1 cm −1 , p = 5 × 10 18 cm −3 and μ HRT = 5 cm 2 V −1 s −1. A positive sign was observed in both Hall and Seebeck measurements, indicating holes to be the predominant current carrier. μ H varied approximately linearly with temperature, consistent with contributions from both ionized and neutral impurity scattering.
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