• S G Patel

      Articles written in Bulletin of Materials Science

    • Electrical properties of zirconium diselenide single crystals grown by iodine transport method

      S G Patel M K Agarwal N M Batra D Lakshminarayana

      More Details Abstract Fulltext PDF

      Single crystals of zirconium diselenide (ZrSe2) were grown by chemical vapour transport method using iodine as the transporting agent. The crystals were found to exhibit metallic behaviour in the temperature range 77–300 K and semiconducting nature in 300–443 K range. The measurements of thermoelectric power and conductivity enabled the determination of both carrier mobility and carrier concentration. The variation of carrier mobility and carrier concentration with temperature indicates the presence of deep trapping centres and their reduction with temperature in these crystals.

    • CVT growth of zirconium sulphoselenide single crystals

      S G Patel S K Arora M K Agarwal

      More Details Abstract Fulltext PDF

      Large single crystals of a few important members (x=0, 1, 2) of the series ZrSxSe2−x compounds have been obtained by chemical vapour (iodine) transport method. The crystals have been characterized for several properties. Their semiconducting nature is inferred from resistivity vs temperature measurements, their optical absorption data reveal indirect gap transitions, their thermoscans indicate their stability over a limited temperature range, and they essentially grow by the mechanism of two dimensional layer propagation.

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