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Zone-center phonons and elastic properties of ternary chalcopyrite ABSe 2 (A = Cu and Ag; B = al, Ga and In)

  • A. K. Kushwaha*
  • , C. G. Ma
  • , M. G. Brik
  • , S. Bin Omran
  • , R. Khenata
  • *Corresponding author for this work
  • K.N. Govt. P.G. College
  • Chongqing University of Posts and Telecommunications
  • University of Verona
  • University of Tartu
  • Jan Dlugosz University in Czestochowa
  • King Saud University
  • University of Mascara

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The zone-center phonon frequencies and the elastic properties of six ternary chalcopyrite compounds represented by ABSe 2 (A = Cu and Ag; B = Al, Ga and In) are systematically calculated by using the rigid ion model. In the present paper, we calculate four bond-stretching and three bond-bending interactions, along with three effective dynamical charges. The calculated results are compared and found to be in fairly good agreement with the available experimental and theoretical results. The elastic anisotropy of the studied compounds is analyzed and visualized by plotting three-dimensional surfaces representing the directional dependences of Young's modulus.

Original languageEnglish
Pages (from-to)324-331
Number of pages8
JournalMaterials Chemistry and Physics
Volume227
DOIs
Publication statusPublished - 1 Apr 2019
Externally publishedYes

Keywords

  • 62.20.de
  • 63.20-e
  • 63.20.D-
  • 63.20.dk
  • Compressibility
  • Elastic constants
  • Ternary chalcopyrite

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