Model calculations of ellipsometric parameters for ligand field absorption by oxidized Ni and Co surfaces

Download
  1. Get@NRC: Model calculations of ellipsometric parameters for ligand field absorption by oxidized Ni and Co surfaces (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1016/0039-6028(86)90683-7
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Journal titleSurface Science
ISSN0039-6028
Volume166
Issue2-3
Pages333346; # of pages: 14
AbstractLigand field absorption of photons by such transition metal compounds as NiO and CoO, although weak, is known to be sensitive to the orientation of the O ions or ligands near the metal atoms. The wavelength dependence and intensity of the absorption could therefore in principle give information regarding the structure of surface oxides on Ni and Co. To estimate whether such absorption is detectable using ellipsometry, we have calculated the ellipsometric angles ψ and Δ for thin films of bulk-like octahedral NiO and CoO on Ni and Co respectively, and conclude that the changes in these angles due to ligand field absorption in very thin films detectable. In reality, the spectra will be sensitive to the chemical species of the metal ions and to the local ligand geometry, and we assess the importance of some these factors. We find changes from one stage of the oxidation process to the next, suggesting that ligand field absorption will make-high-resolution ellipsometry a sensitive probe of the oxidation process of Ni and Co, and possibly other transition metal ions which show ligand field absorption.
Publication date
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NRC number25218
NPARC number21274664
Export citationExport as RIS
Report a correctionReport a correction
Record identifierc825bc48-40e8-434c-a7d7-dc1fe60ebfb6
Record created2015-03-19
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)