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The infra-red absorption spectrum of diamond and its variations

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Summary

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.

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References

  1. Ramachandran, G. N.Proc. Ind. Acad. Sci., A 1946,24, 65.

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  2. Ramanathan, K. G.Ibid., A 1946,24, 150.

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  3. —Ibid., A, 1947,26, 493.

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  4. Rawlins and TaylorInfra-Red Analysis of Molecular Structure, 1929.

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Authors and Affiliations

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

    K. G. Ramanathan

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  1. K. G. Ramanathan
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(Communicated by Sir C. V. Raman, Kt., F.R.S., N.L.)

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Ramanathan, K.G. The infra-red absorption spectrum of diamond and its variations. Proc. Indian Acad. Sci. 26, 469 (1947). https://doi.org/10.1007/BF03170903

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  • DOI: https://doi.org/10.1007/BF03170903

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