• The infra-red absorption spectrum of diamond and its variations

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/026/06/0469-0478

    • Keywords

       

      Rocksalt; Tetrahedral Symmetry; Octahedral Plane; Bunsen Flame; Order Band

    • Abstract

       

      The infra-red absorption spectra of nine cleavage plates of diamond have been investigated in the region of frequencies between 750 and 4000 cm.−1 and their observed spectral behaviours have been elucidated. While the second-order spectrum is similar for all diamonds, the first-order spectrum shows large variations. From the nature of these variations it is concluded that the first-order activity is due neither to chemical impurities nor to mosaicity of structure, but must be attributed to the tetrahedral symmetry of structure possessed by such diamonds.

    • Author Affiliations

       

      K G Ramanathan1

      1. Department of Physics, Indian Institute of Science, Bangalore
    • Dates

       
  •  

© 2021-2022 Indian Academy of Sciences, Bengaluru.