Formation of a Stable Decagonal Quasicrystalline Al-Pd-Mn Surface Layer
Lograsso, T. A.
Delaney, D. W.
Date de parution
Physical Review Letters, American Physical Society (APS), 2001/87/195506/1-4
We report the <i>in situ</i> formation of an ordered equilibrium decagonal Al-Pd-Mn quasicrystal overlayer on the fivefold symmetric surface of an icosahedral Al-Pd-Mn monograin. The decagonal structure of the epilayer is evidenced by x-ray photoelectron diffraction, low-energy electron diffraction, and electron backscatter diffraction. This overlayer is also characterized by a reduced density of states near the Fermi edge as expected for quasicrystals. This is the first time that a millimeter-size surface of the stable decagonal Al-Pd-Mn is obtained, studied, and compared to its icosahedral counterpart.
Type de publication
Resource Types::text::journal::journal article
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