• R Mohan

      Articles written in Journal of Chemical Sciences

    • Infrared absorption spectra of As-Se glasses

      R Mohan K J Rao

      More Details Abstract Fulltext PDF

      IR absorption spectra of As-Se glasses have been studied over a wide range of compositions. Various two-phonon, multiphonon (combination tones) and impurity absorptions have been identified. Compositional variation of relative band intensities has been explained in terms of the chemically ordered network model.

    • Dielectric studies of As-Se glasses

      R Mohan K J Rao

      More Details Abstract Fulltext PDF

      Dielectric constants and loss tangents of As-Se glasses have been measured between 300 K and the respective glass transition temperatures and between 1 kHz and 20 kHz. The variation of dielectric constants has been interpreted in terms of both heteropolarity of bonds and average bond energies employing a chemically ordered network model. Various contributions to total molar polarizations have been estimated. Rapid rise of loss tangent in the vicinity of glass transitions has been interpreted in terms of rapid increase; of d.c. conductivity.

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