Abstract
IN 1935, E. Kordes1 recognized that LiAl5O8 has nearly a spinel structure, but he observed a large number of extra lines, which he could not explain. A. Hoffman2 prepared the corresponding compound LiFe5O8, which again was recognized as having nearly spinel structure. We found3 that the powder diagrams of LiFe5O8 correspond with a primitive cubic lattice with a lattice constant of 8.33 A. The space group was found to be very probably P433 (or P413) and the positions of the atoms (in the notation of the International Tables, 1935) are: with Δ3, Δ4, Δ5 and Δ6 approximately 0.007 and Δ1 and Δ2 still smaller.
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References
Kordes, E., Z. Krist., A, 91, 193 (1935).
Hoffman, A., Naturw., 26, 431 (1938).
Braun, P. B., paper at ASXRED meeting, Ithaca, 1949. Van Santen J. H., de Boer, F., and Verwey, E. J. W., J. Chem. Phys., 18, 1032 (1950).
Verwey, E. J. W., Z. Krist., A, 91, 317 (1935). Hägg, G., Z. phys. Chem., B, 29, 88 (1935). Kordes, E., Z. Krist., A, 91, 193 (1935).
Houben, G. M. M., thesis, Delft (1951).
Ervin, Gay, Acta Cryst., 103 (1952).
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BRAUN, P. A Superstructure in Spinels. Nature 170, 1123 (1952). https://doi.org/10.1038/1701123a0
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DOI: https://doi.org/10.1038/1701123a0
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