Small-defect clusters in chromia-doped rutiles

L. A. Bursill, David J. Smith, Peng Ju Lin

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Bright-field phase contrast electron microscope images of chromia-doped rutiles have been used to study the size and distribution of small defect clusters in specimens of TiO2, (Ti,Cr)O1.995, and (Ti,Cr)O1.985. Comparisons of observed and measured spot contrast densities, and contrast calculations using computer simulations of the defect structures, lead to the conclusion that the smallest clusters observed contained ∼32 Cr3+ cations. Larger clusters occurred with increasing frequency for higher dopant levels, which is consistent with increased interaction and aggregation of traditional or reconstructed small defects (e.g., Cr3+ interstitials or charge-compensated oxygen vacancies).

Original languageEnglish (US)
Pages (from-to)203-210
Number of pages8
JournalJournal of Solid State Chemistry
Volume56
Issue number2
DOIs
StatePublished - Feb 1985
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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