EPR of iron centres in silicon dioxide

  title={EPR of iron centres in silicon dioxide},
  author={John A. Weil},
  journal={Applied Magnetic Resonance},
  • J. A. Weil
  • Published 1 February 1994
  • Physics
  • Applied Magnetic Resonance
A review is presented of the present status of EPR-based understanding of Fe in SiO2. As a primary goal, a guide to the literature is given. Quantitative evaluation of all relevant spin-Hamiltonian parameters is discussed, as is computer-based spectral simulation, for single crystals (alpha-quartz), powders and glasses (vitreous quartz). Identification of the numerous centres now known (e.g., for Fe3+:[FeO4/M]0 with M=H, Li, Na, …, as well as [FeO4]−) is featured, discussing atomic positions… 
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