Journal of Materials Science

, Volume 16, Issue 3, pp 775–779

On electrical transport in CoWO4 single crystals


  • R. Bharati
    • Department of PhysicsUniversity of Gorakhpur
  • R. A. Singh
    • Department of PhysicsUniversity of Gorakhpur
  • B. M. Wanklyn
    • Department of PhysicsUniversity of Oxford, Clarendon Laboratory

DOI: 10.1007/BF02402795

Cite this article as:
Bharati, R., Singh, R.A. & Wanklyn, B.M. J Mater Sci (1981) 16: 775. doi:10.1007/BF02402795


CoWO4 is a p-type semiconductor with conductivity in the range 10−8 to 10−3 ohm−1 cm−1. The solid exhibits extrinsic behaviour up to 750 K and intrinsic behaviour above 750 K. In this solid conduction by hopping of small polarons seems to be dominating up to 750 K and above 750 K conduction becomes band type. The energy band gap of the solid has been found to be 2.80 eV. The values of mobility and the mean free path are estimated. The variation of dielectric constant with temperature has been attributed to changes in atomic and ionic polarization and space charge polarization of thermally generated charge carriers.

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© Chapman and Hall Ltd 1981