• Interlattice displacements and elastic constants of the A-15 compounds V3Si, V3Ge and Nb3Sn

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      https://www.ias.ac.in/article/fulltext/pram/010/03/0311-0317

    • Keywords

       

      A-15 compounds; A3B structure; interlattice displacements; elastic constants

    • Abstract

       

      General expressions for the interlattice displacements of the A-15 structure compounds are obtained in terms of the strain components making use of the deformation theory. The nature of the interlattice displacements of all the 8 atoms in the unit cell is discussed. It is found that the interlattice displacements occur in such a way that the pair of atoms along any linear chain move in opposite directions with equal magnitudes. Expression for the strain energy of these compounds is developed using deformation theory and this is compared with the strain energy expression from continuum theory to obtain the elastic constants. The theoretical values of the elastic constants fairly agree with the experimental values for V3 Si, V3Ge and Nb3 Sn.

    • Author Affiliations

       

      Jacob Philip1 C S Menon1

      1. Department of Physics, University of Kerala, Trivandrum - 695 581
    • Dates

       
  • Pramana – Journal of Physics | News

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