A 6-D structural model for the icosahedral (Al, Si)-Mn quasicrystal
- 1 January 1988
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 49 (7) , 1225-1233
- https://doi.org/10.1051/jphys:019880049070122500
Abstract
A 6-dimensional (6-D) periodic model is proposed for the Al-Mn-Si icosahedral quasiperiodic crystal. The model results from an embedding of the periodic cubic α structure in 6-D. In the Janner-Janssen-Bak description, it consists of three concentric spherical shells of respectively Mn, Al and Al aligned in perpendicular space around the lattice nodes and two additional shells of Al around the body centers. This model is shown to match the X-ray powder diffraction data with a satisfactory residual R-factor of 0.128Keywords
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