[gamma]-Alumina: a single-crystal X-ray diffraction study

The structure of gamma-alumina (Al21+1/3(symbol omitted)2+2/3O32) crystals obtained as a product of a corrosion reaction between Beta-sialon and steel was refined in the space group Fdm. The oxygen sublattice is fully occupied. The refined occupancy parameters are 0.83 (3), 0.818 (13), 0.066 (14) an...

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Bibliographic Details
Published in:Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2006-09, Vol.62 (9), p.i83
Main Authors: Langer, Vratislav, Krestan, Jan, Smrcok, Lubomír
Format: Article
Language:English
Subjects:
Alumina
Crystal structure
Crystallography
Diffraction
Online Access:Get full text
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Summary:The structure of gamma-alumina (Al21+1/3(symbol omitted)2+2/3O32) crystals obtained as a product of a corrosion reaction between Beta-sialon and steel was refined in the space group Fdm. The oxygen sublattice is fully occupied. The refined occupancy parameters are 0.83 (3), 0.818 (13), 0.066 (14) and 0.044 (18) for Al ions in 8a, 16d, 16c, and 48f positions, respectively. The Al ions are distributed over octahedral and tetrahedral sites in a 63:37 ratio, with 6% of all Al ions occupying non-spinel positions. [PUBLICATION ABSTRACT]
ISSN:0108-2701
1600-5759
DOI:10.1107/S0108270106026850