Axial Cr3+ centres in MgO: EPR and fluorescence studies

K. P. O'Donnell, B. Henderson, D. O'Connell, M. O. Henry

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18 Citations (Scopus)


The ESR, fluorescence and selective excitation spectra of Cr3+ in three different sites of tetragonal symmetry are reported. A comparison of the intensities of the different spectra allows a correlation of the ESR and fluorescence lines to three different tetragonal centres. From the measured splittings it has been possible to deduce the magnitudes of the tetragonal components of the crystalline field used in Macfarlane's theory (1967) of Cr3+ ions. Models involving slight changes in the mechanism of charge compensation are discussed.

Original languageEnglish
Article number021
Pages (from-to)3877-3884
Number of pages8
JournalJournal of Physics C: Solid State Physics
Issue number19
Publication statusPublished - 1 Dec 1977


  • fluorescence
  • excitation spectra


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