• Dielectric parameters and a.c. conductivity of pure and doped poly (methyl methacrylate) films at microwave frequencies

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      https://www.ias.ac.in/article/fulltext/boms/029/04/0397-0401

    • Keywords

       

      Dielectric constant; a.c. conductivity; dielectric relaxation.

    • Abstract

       

      Dielectric properties of pure and doped poly (methyl methacrylate) (PMMA) films at microwave frequency, 8.92 GHz, have been studied at 35°C. Iodine, benzoic acid and FeCl3 have been used as dopants. The losses in doped films are found to be larger than in pure PMMA films. The increased losses account for increased a.c. conductivity in doped films. The increase in conductivity is accounted due to creation of additional hopping sites for the charge carriers in doped samples. The dielectric data has also been used to evaluate optical constants, absorption index (𝐾) and refractive index (𝑛) of the films.

    • Author Affiliations

       

      Anju Tanwar1 K K Gupta1 P J Singh1 Y K Vijay2

      1. Department of Physics, M.S.J. College, Bharatpur 321 001, India
      2. Department of Physics, University of Rajasthan, Jaipur 302 004, India
    • Dates

       
  • Bulletin of Materials Science | News

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