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

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Abstract

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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Authors and Affiliations

  1. Center for Materials Research, Stanford University, 94305, Stanford, CA, USA

    Glenn A. Waychunas

  2. Division of Geological and Planetary Sciences, California Institute of Technology, 91125, Pasadena, CA, USA

    George R. Rossman

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  1. Glenn A. Waychunas
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  2. George R. Rossman
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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). https://doi.org/10.1007/BF00311957

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