Structural, electronic and vibrational properties of tetragonal zirconia under pressure: a density functional theory study.

  • Milman V
  • Perlov A
  • Refson K
 et al. 
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Abstract

We present the results of a plane wave based density functional study of the structure and properties of tetragonal zirconia in the range of pressures from 0 to 50 GPa. We predict a transition to a fluorite-type cubic structure at 37 GPa which is likely to be of a soft mode origin and is accompanied by a power law decrease of the frequency of the Raman-active A(1g) mode. A detailed study of the pressure effect on phonon modes is given, including theoretical Raman spectra and their pressure dependence. Our results provide a consistent picture of the pressure-induced phase transition in tetragonal zirconia.

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Authors

  • Victor Milman

  • Alexander Perlov

  • Keith Refson

  • Stewart J Clark

  • Jacob Gavartin

  • Bjoern Winkler

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