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

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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.

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Authors and Affiliations

  1. Department of Physics, M.S.J. College, 321 001, Bharatpur, India

    Anju Tanwar, K. K. Gupta, P. J. Singh & Y. K. Vijay

  2. Department of Physics, University of Rajasthan, 302 004, Jaipur, India

    Y. K. Vijay

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  1. Anju Tanwar
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  2. K. K. Gupta
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  3. P. J. Singh
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  4. Y. K. Vijay
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Correspondence to Anju Tanwar.

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Tanwar, A., Gupta, K.K., Singh, P.J. et al. Dielectric parameters and a.c. conductivity of pure and doped poly (methyl methacrylate) films at microwave frequencies. Bull Mater Sci 29, 397–401 (2006). https://doi.org/10.1007/BF02704142

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  • DOI: https://doi.org/10.1007/BF02704142

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