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    • Higher order elastic constants and generalized Gruneisen parameters of elastic waves and low temperature thermal expansion of gadolinium

      S Sindhu C S Menon

      Volume 47 Issue 6 December 1996 pp 435-445

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      https://www.ias.ac.in/article/fulltext/pram/047/06/0435-0445

    • Keywords

       

      Elasticity; elastic constants; thermal expansion

    • Abstract

       

      Expressions for the higher order elastic constants are derived using the sublattice displacements to the second degree in strains. These expressions are used to obtain the higher order elastic constants and their pressure derivatives in gadolinium. The higher order elastic constants are used to find out the generalized Gruneisen parameters of the elastic waves propagating in different directions in gadolinium. The Brugger gammas are evaluated and the low temperature limit of the Gruneisen gamma is obtained. The results are compared with the available reported values.

    • Author Affiliations

       

      S Sindhu1 C S Menon1

      1. School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam - 686 560, India

    • Dates

       
      Published
      December 1996
      Manuscript received
      10 June 1996
      Manuscript revised
      14 October 1996

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