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The high-pressure phase sequence in nanocrystalline zirconia

  • P. BouvierEmail author
  • V. Dmitriev
  • G. Lucazeau
OriginalPaper

Abstract.

X-ray diffraction and Raman data on the pressure induced phase transitions of a nanometric zirconia, ZrO2, are analyzed via a classical phenomenological Landau approach of the bulk. It is concluded that the initial tetragonal structure (D 4h 15), which is a metastable bulk state of zirconia at ambient conditions, evolves continuously towards the ideal cubic fluorite structure (O h 5) via an intermediate tetragonal form (D 4h 14). The proposed phenomenological model describes consistently all experimental peculiarities, including the hybridization and softening of the low-frequency Raman active modes along with lattice-parameter anomalies.

Keywords

Zirconia Phase Transition Fluorite Ambient Condition Active Mode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  1. 1.Laboratoire d’Électrochimie et de Physico-Chimie des Matériaux et des InterfacesINPG-CNRSSt. Martin d’Héres CedexFrance

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