Abstract
Mössbauer spectra of the spinel series Ca x Co1−x Fe2O4, withx=0.0, 0.05 and 0.10, have been collected between 80 and 300 K and in an applied field of 6 T at 4.2 K. From the shape-independent hyperfine field distribution fits of the external field spectra, and from the binomial distribution fits of the temperature-dependent spectra, the hyperfine field and the center shift could be unambiguously assigned to octahedrally and tetrahedrally coordinated ferric ions. The importance of the application of an external field in conjunction with a reasonable physical model to obtain a correct assignment of hyperfine parameters to a specific site is demonstrated.
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de Bakker, P.M.A., Vandenberghe, R.E. & De Grave, E. Hyperfine interactions and site population in the spinel compounds Ca x Co1−x Fe2O4 . Hyperfine Interact 94, 2023–2027 (1994). https://doi.org/10.1007/BF02063734
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DOI: https://doi.org/10.1007/BF02063734