• Variation of electrical properties in sepiolite during dehydration

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Sepiolite; dielectric constant and loss; electrical conductivity; dehydration

    • Abstract


      The dielectric constant (K), loss (tanδ) andac conductivity of a sepiolite sample have been measured as a function of frequency in the range 102-107 Hz and in the temperature region 30–400°C. Thedc conductivities of hot pressed pellets were measured in the temperature range 30–550°C.K and tanδ of these samples decrease with increasing frequency. Results of these measurements have been correlated with the structural transformation accompanying dehydration, making use ofdta, ir and x-ray data. The moderately large value of activation energy (∼ 2·2 eV) in the intrinsic range suggests that the conduction process is most probably associated with ions.

    • Author Affiliations


      S Lokanatha1 S Bhattacherjee1

      1. Department of Physics, Indian Institute of Technology, Kharagpur - 721 302, India
    • Dates

  • Bulletin of Materials Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.