lEED investigations of a cubic Al-Pd-Mn (110) alloy

摘要

An Al-Pd-Mn cubic alloy having a bulk chemcial composition somewhat analogous to that of the icosahedral Al-Pd-Mn quasicrystal is studied.Our goal is to ocmpare the surfac estructure and properties of the cubic alloy with those of the quasicrystalline alloy.In this paper,we report the first observations for the (110) surface of the cubic alloy using (primarily) low energy electron diffraction (LEED).The surface is surface is prepared by sputterifng and annealing in ultrahigh vacuum (UHV).In addition to the substrate LEED pattern,at least three superstructures evolve sequentially with annealing temeprature.