• DOI:10.1007/BF03162478
• Corpus ID: 96051097

EPR of iron centres in silicon dioxide

@article{Weil1994EPROI,
  title={EPR of iron centres in silicon dioxide},
  author={John A. Weil},
  journal={Applied Magnetic Resonance},
  year={1994},
  volume={6},
  pages={1-16}
}

• 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, surroundings and dynamic effects. Some general chemical considerations, including comparison between Fe in SiO2 crystals and glasses, are covered, as are future needs.