Abstract
By using Auger electron spectroscopy and secondary-electron imaging, we show that, as a result of bombardment with 1.5-keV ions, Al is preferentially sputtered and the surface structure of a decagonal quasicrystal transforms to body-centered cubic. Annealing the sample at 700 K restores the Al concentration at the surface and, thereby, the quasicrystalline structure. Real-time observations establish the orientational relationship between the quasicrystalline and cubic surface structures, which we use to propose an atomic model of their interface.
- Received 13 May 1998
DOI:https://doi.org/10.1103/PhysRevB.58.14113
©1998 American Physical Society