Atom–atom force field for simulation of zirconia bulk, nanosheets and nanotubes

Research output

5 Citations (Scopus)

Abstract

The set of three pair atom–atom potentials for zirconia crystals and nano objects was developed. Besides Buckingham potential and Coulomb interaction, these force fields employ the additional functional forms: Fermi-Dirac, Inverse Gaussian or Morse potential. The developed force fields are capable to reproduce the structural, mechanical and thermodynamic properties of five zirconia phases: monoclinic, tetragonal, cubic, brookite and cotunnite with acceptable accuracy. The proposed force fields give monoclinic phase as a ground state structure and predict the correct energy ordering of the phases. The Raman and IR phonon frequencies, temperature dependencies of the thermodynamic properties of monoclinic and tetragonal zirconia are predicted in good and moderate agreement with the experimentally observed data and results of first-principles calculations. To test the transferability of proposed potentials, the zirconia-based nanosheets and nanotubes were simulated. Results of structure optimisation and calculation of the nanotubes’ strain energies are well compared with the corresponding data of the first-principles calculations.

Original languageEnglish
Pages (from-to)886-899
Number of pages14
JournalMolecular Simulation
Volume43
Issue number12
DOIs
Publication statusPublished - 13 Aug 2017

Scopus subject areas

  • Chemistry(all)
  • Information Systems
  • Chemical Engineering(all)
  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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