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    • Temperature dependence of electrical conductivity and thermoelectric power of Bi-Sb tapes prepared by liquid quenching

      T K Dey S K Ghatak

      Condensed Matter Physics Volume 32 Issue 2 February 1989 pp 161-166

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      https://www.ias.ac.in/article/fulltext/pram/032/02/0161-0166

    • Keywords

       

      Bismuth-antimony alloy; liquid quenching; thermoelectric power; electrical conductivity; localized states; thermally activated tunnelling

    • Abstract

       

      Electrical conductivity and thermoelectric power of liquid-quenched Bi-Sb tapes with Sb concentration in the range 8 to 18 at.% are reported between 77K and room temperature. Analysis of the data shows that the total electrical conductivity of these tapes is determined by a temperature-independent component due to band conduction, and a strongly temperature-dependent part due to carrier transport across or through the defect states. These defect states which appear to originate from structural imperfections and disorders due to rapid cooling, are formed close to the mobility edge within a small energy range.

    • Author Affiliations

       

      T K Dey1 S K Ghatak1 2

      1. Cryogenic Engineering Centre, Indian Institute of Technology, Kharagpur - 721 302, India
      2. Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur - 721 302, India

    • Dates

       
      Published
      February 1989
      Manuscript received
      19 April 1988
      Manuscript revised
      21 November 1988

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