Distinction between six- and fourfold coordinated silicon in SiO2 polymorphs via electron loss near edge structure (ELNES) spectroscopy

T. Sharp, Z. Wu, F. Seifert, B. Poe, M. Doerr, E. Paris

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

Si K-, L- and O K-edge ELNES spectra of natural α-quartz and synthetic coesite on one side and synthetic stishovite on the other show characteristic differences that can be related, by comparison with multiple-scattering (MS) calculations, to the fourfold vs. sixfold coordination of Si in these polymorphs of SiO2. It is shown by MS calculations on large clusters that the outer shells contribute relatively little to the overall topologies of the spectra. Therefore, distinction between fourfold-and sixfold-coordinated Si is possible even on a nm scale and probably also in amorphous substances.

Original languageEnglish (US)
Pages (from-to)17-24
Number of pages8
JournalPhysics and Chemistry of Minerals
Volume23
Issue number1
DOIs
StatePublished - Feb 1996
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Geochemistry and Petrology

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