Quasicrystalline epitaxial single element monolayers on icosahedral Al-Pd-Mn and decagonal Al-Ni-Co quasicrystal surfaces

Franke, K. J.; Sharma, H. R.; Theis, W.; Gille, Peter; Ebert, P. and Rieder, K.-H. (2002): Quasicrystalline epitaxial single element monolayers on icosahedral Al-Pd-Mn and decagonal Al-Ni-Co quasicrystal surfaces. In: Physical Review Letters, Vol. 89, No. 15

Abstract

Single element quasicrystalline monolayers were prepared by depositionof antimony and bismuth on the fivefold surface of icosahedralAl71.5Pd21Mn8.5 and the tenfold surface of decagonal Al71.8Ni14.8Co13.4.Elastic helium atom scattering and low energy electron diffraction ofthe monolayers show Bragg peaks at the bulk derived positions of theclean surfaces, revealing highly ordered quasicrystalline epitaxialfilms. Their adatom densities of (0.9+/-0.2)x10(15) cm(-2) and(0.8+/-0.2)x10(15) cm(-2) on Al-Pd-Mn and Al-Ni-Co, respectively,correspond to roughly one adatom per Al atom of the quasicrystallinesubstrate surfaces.

• Item Type: Journal article
• Faculties: Geosciences > Department of Earth and Environmental Sciences > Crystallography and Materials Science
• Subjects: 500 Science > 550 Earth sciences and geology
• Language: English