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Spectroscopic standard for tetrahedrally coordinated ferric iron: γ LiAlO2:Fe3+


γ LiAlO2 doped with Fe3+ in the tetrahedral site has been examined by extended X-ray absorption fine structure (EXAFS) analysis, and Mössbauer and optical spectroscopy. The isomer shift (IS) is −0.026 mm/s (Fe-Pd); the quadrupole splitting (QS) is 0.62 mm/s. Anisotropic optical absorption is prominent at ∼391, 452, and 463 nm. The K-edge absorption spectrum shows a prominent absorption near 7,113 ev typical of tetrahedrally coordinated Fe3+.

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Waychunas, G.A., Rossman, G.R. Spectroscopic standard for tetrahedrally coordinated ferric iron: γ LiAlO2:Fe3+ . Phys Chem Minerals 9, 212–215 (1983).

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  • Iron
  • Spectroscopy
  • Absorption Spectrum
  • Mineral Resource
  • Optical Absorption