Axial Cr3+ centres in MgO: EPR and fluorescence studies

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

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

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.

LanguageEnglish
Article number021
Pages3877-3884
Number of pages8
JournalJournal of Physics C: Solid State Physics
Volume10
Issue number19
DOIs
Publication statusPublished - 1 Dec 1977

Fingerprint

Paramagnetic resonance
Fluorescence
fluorescence
Crystalline materials
Ions
symmetry
excitation
ions
Compensation and Redress

Keywords

  • fluorescence
  • excitation spectra

Cite this

O'Donnell, K. P. ; Henderson, B. ; O'Connell, D. ; Henry, M. O. / Axial Cr3+ centres in MgO : EPR and fluorescence studies. In: Journal of Physics C: Solid State Physics. 1977 ; Vol. 10, No. 19. pp. 3877-3884.
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Axial Cr3+ centres in MgO : EPR and fluorescence studies. / O'Donnell, K. P.; Henderson, B.; O'Connell, D.; Henry, M. O.

In: Journal of Physics C: Solid State Physics, Vol. 10, No. 19, 021, 01.12.1977, p. 3877-3884.

Research output: Contribution to journalArticle

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T1 - Axial Cr3+ centres in MgO

T2 - Journal of Physics C: Solid State Physics

AU - O'Donnell, K. P.

AU - Henderson, B.

AU - O'Connell, D.

AU - Henry, M. O.

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N2 - 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.

AB - 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.

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