رکورد قبلیرکورد بعدی

" Surface preparation and characterization of the icosahedral Al-Pd-Mn-Ga quasicrystal "


Document Type : AL
Record Number : 900050
Doc. No : LA4n20x45c
Title & Author : Surface preparation and characterization of the icosahedral Al-Pd-Mn-Ga quasicrystal [Article]\ Heinzig, MarkJenks, Cynthia J.Van Hove, MichelFisher, IanCanfield, PaulThiel, Patricia A.
Date : 2002
Abstract : Auger electron spectroscopy and low-energy electron diffraction (LEED) provide basic information about the structure and composition of the fivefold surface of the quaternary quasicrystal, icosahedral Al67Pd4Mn21Ga8. Surface preparation techniques established previously for two of the icosahedral ternary alloys, Al-Pd-Mn and Al-Cu-Fe, appear to be similarly effective for Al-Pd-Mn-Ga. After annealing in the range 600-950 K, the surface concentration of Ga is constant and low. After annealing in the range 900-950 K, a good LEED pattern is obtained. LEED indicates that Ga changes the surface structure significantly.
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4n20x45c_441853.pdf
4n20x45c.pdf
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