Trapping of cubic ZnO nanocrystallites at ambient conditions

F. Decremps, J. Pellicer-Porres, F. Datchi, J.P. Itie, A. Polian, F. Baudelet, Jianzhong Jiang

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Abstract

Dense powder of nanocrystalline ZnO has been recovered at ambient conditions in the metastable cubic structure after a heat treatment at high pressure (15 GPa and 550 K). Combined x-ray diffraction (XRD) and x-ray absorption spectroscopy (XAS) experiments have been performed to probe both long-range order and local crystallographic structure of the recovered sample. Within uncertainty of these techniques (about 5%), all the crystallites are found to adopt the NaCl structure. From the analysis of XRD and XAS spectra, the cell volume per chemical formula unit is found to be 19.57(1) and 19.60(3) Angstrom(3), respectively, in very good agreement with the zero-pressure extrapolation of previously published high-pressure data.
Original languageEnglish
JournalApplied Physics Letters
Volume81
Issue number25
Pages (from-to)4820-4822
ISSN0003-6951
DOIs
Publication statusPublished - 2002

Bibliographical note

Copyright (2002) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

  • HIGH-PRESSURE
  • P-TYPE ZNO
  • ZNSE
  • CDSE NANOCRYSTALS
  • PHASE
  • STRUCTURAL TRANSFORMATIONS

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