Abstract
The present paper deals with the preparation of indium intercalated compounds of tungsten sulphoselenide, In 1/3WS x Se 2− x (0 ≤ x≤ 2) and their characterization by various physicochemical methods. The X-ray studies confirmed that all these compounds possess hexagonal symmetry and there exist no anisotropy towards the crystallite size. Room temperature magnetic susceptibility, thermoelectric power experiments and electrical conductivity measurements in the temperature range 25–350°C indicated that In 1/3WS 2 and In 1/3WS x Se 2 − x (0 ≤ x≤ 2) compounds exhibit p- and n-type diamagnetic semiconducting behaviour respectively and results are explained on the basis of existing band model. Thermal stability of these compounds in air and nitrogen has also been studied and formation of tungsten bronze based on X-ray data of oxidized products has been proposed.
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