• X-ray diffraction line profile from the aggregate of distorted crystallites. II

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      https://www.ias.ac.in/article/fulltext/pram/031/03/0215-0220

    • Keywords

       

      Wavelength of distortion wave; strain gradient; fourth moment; X-ray diffraction profile; distorted crystallites

    • Abstract

       

      An expression for the fourth moment of the line profile in terms of several strain derivatives and the possibility of measuring the ‘wavelength’ of crystal distortions (λ) for any sinusoidally varying component of the strain are available. The experimental means for evaluating such strain derivatives in the expression for the fourth moment was earlier described. A numerical method for evaluating this wavelength and its subsequent use to determineλ in several samples ofα-brass is presented here. The data used are taken from the earlier paper of the authors. An attempt has been made to interpret the values ofλ and their changes with cold working and annealing in terms of lattice strain.

    • Author Affiliations

       

      G B Mitra1 T B Ghosh1 2

      1. Indian Association for the Cultivation of Science, Jadavpur, Calcutta - 700 032, India
      2. Department of Physics, Indian Institute of Technology, Kharagpur - 721 302, India
    • Dates

       
  • Pramana – Journal of Physics | News

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