X-ray diffraction study of phason strain field in oriented icosahedral Al-Mn
Abstract
We have produced large area (some square centimeters), crystallographically oriented icosahedral-phase material by implanting Mn ions directly into single-crystal Al substrates. High-resolution x-ray measurements of the positions and line shapes of the quasicrystal diffraction peaks reveal systematic deviations from perfect icosahedral symmetry. A quantitative analysis of the data shows that the samples contain a simple form of phason strain field which depends on the kinetics of grain formation. The results rule out the icosatwin model proposed by Pauling.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 1987
- DOI:
- 10.1103/PhysRevLett.58.2304
- Bibcode:
- 1987PhRvL..58.2304B
- Keywords:
-
- Aluminum Alloys;
- Crystal Structure;
- Ion Implantation;
- Manganese Alloys;
- Strain Distribution;
- X Ray Diffraction;
- Crystal Defects;
- Packing Density;
- Single Crystals;
- X Ray Spectroscopy;
- Solid-State Physics;
- 61.70.-r;
- 61.10.Jv;
- 61.50.Em;
- 61.50.Jr