The defect structures of Mn1-xO

M. J. Radler*, J. B. Cohen, G. P. Sykora, T. Mason, D. E. Ellis, John Faber

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


In situ neutron powder diffraction patterns analyzed by the Rietveld technique show no interstitial occupation for 0 < x < 0.05 at 1673 K. At a larger deviation from stoichiometry, x = 0.09, an interstitial occupation of 2(1) pct. has been measured, similar to that observed for Fe1-xO at 1323 K. The vacancy interstitial ratio of 5.5 is indicative of a mixture of small cation vacancy clusters and unassociated cation vacancies. New theoretical results indicate that the oxygen shell around a defect cluster expands to help stablize the cluster. In situ X-ray single crystal diffraction studies of Mn1-xO (0<x<0.056) at 1573K show no superstructure peaks or diffuse maxima in reciprocal space where maxima are observed for Fe1-xO. By comparison with the absolute intensities from diffuse scattering in Fe1-xO it is evident that even a small degree of cluster ordering should have been visible, even at 1573K. This information is employed to model new measurements of conductivity at large deviations from stoichiometry.

Original languageEnglish (US)
Pages (from-to)141-154
Number of pages14
JournalJournal of Physics and Chemistry of Solids
Issue number1
StatePublished - Jan 1992


  • Manganous oxide
  • defect clusters in oxides
  • defects in oxides
  • electrical conductivity in oxides
  • manganosite
  • oxides
  • transition metal oxides

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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