• Lattice parameter and thermal expansion of CsCl and CsBr by x-ray powder diffraction. II. Thermal expansion of CsBr from room temperature to 78.2 °K

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      https://www.ias.ac.in/article/fulltext/pram/027/03/0475-0478

    • Keywords

       

      Nelson-Riley extrapolation; thermal expansion; caesium bromide; powder diffraction; lattice parameter; cryostat

    • Abstract

       

      The lattice parameters of CsBr at eight different temperatures from room temperature to 78.2 °K were measured and the true lattice parameters were obtained by the least squares method using the Nelson-Riley extrapolation function. Using these parameters the thermal expansion coefficients of CsBr were estimated at each temperature by fitting them into a cubic polynomial involving temperatureT. TheαT thus obtained were compared with the values of earlier workers who used an interferometric technique and the agreement was found to be good.

    • Author Affiliations

       

      V Ganesan1 K S Girirajan1

      1. Department of Crystallography and Biophysics, University of Madras, A. C. College Campus, Guindy, Madras - 600 025, India
    • Dates

       
  • Pramana – Journal of Physics | News

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