Formation of Decagonal Quasicrystal in the Al-Pd-Mn System and Its Structure
- 1 September 1991
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 30 (9R) , 2028
- https://doi.org/10.1143/jjap.30.2028
Abstract
Formation of a decagonal quasicrystal in Al70Pd30-x Mn x alloys (x=8-20) and its structure were examined by X-ray powder diffraction, electron diffraction and high-resolution electron microscopy. The decagonal quasicrystal is formed as a coexisting phase with an icosahedral phase in the composition range of x=10-15, and as a single phase at a composition of x about 20. The structure of the decagonal phase is a mixture of decagonal quasicrystalline regions with some linear phason strain and microcrystalline regions. We propose that the structure of Al-Pd-Mn decagonal quasicrystal may be interpreted as a tiling formed by atom cluster linkages, which are different to those reported in Al-Ni-Co and Al-Cu-Co decagonal quasicrystals.Keywords
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