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Phonon dispersion relations of the A15 compound Nb3Sb

Authors
Journal
Journal of Physics and Chemistry of Solids
0022-3697
Publisher
Elsevier
Publication Date
Volume
48
Issue
8
Identifiers
DOI: 10.1016/0022-3697(87)90070-9
Keywords
  • Superconductivity
  • A15 Compounds
  • Phonon Dispersion
  • Angular Forces

Abstract

Abstract We have calculated the phonon dispersion relations of the A15 compound Nb 3 Sb using an angular force model approach, the analysis being restricted to third neighbour interactions only. The force constants have been evaluated by fitting them to the measured values ofphonons at the zone centre. Good agreement has been observed between theory and the available experimental results. It has been inferred that the angular forces are not of significant importance between different atoms (Nb-Sb). The physical aspects for the same are discussed.

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