Phase transitions in V2O5 in a high resolution electron microscope

H. J. Fan*, L. D. Marks

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

This paper presents data on phase transitions in vanadium pentoxide induced by electron beam irradiation in a high resolution electron microscope. The results show that the concentration gradient resulting from loss of oxygen from the surface drives a number of phase transitions. Two intermediate phases with orthorhombic structures, V4O9 and a modification of V6O13, were observed. The final product was a vanadium monoxide with a rock-salt type structure. The end product and the intermediate phases have a well defined orientational relationship with the initial V2O5 phase, when the incident electron beam is along [001] or [110] of the V2O5. The average grain size of the final phase was proportional to the inverse square root of the flux of electrons, indicating diffusion-controlled nucleation.

Original languageEnglish (US)
Pages (from-to)357-364
Number of pages8
JournalUltramicroscopy
Volume31
Issue number4
DOIs
StatePublished - Dec 1989

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Instrumentation

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