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

Journal Article · Mon Jan 07 23:00:00 EST 2002 · Journal of Alloys and Compounds

DOI:https://doi.org/10.1016/S0925-8388(02)00238-4· OSTI ID:837803

Heinzig, Mark ^[1]; Jenks, Cynthia J; Van Hove, Michel; Fisher, Ian; Canfield, Paul; Thiel, Patricia A

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1. LBNL Library

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.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director, Office of Science. Office of Basic Energy Sciences. Division of Materials Sciences (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 837803
• Report Number(s): LBNL--49729
• Journal Information: Journal of Alloys and Compounds, Journal Name: Journal of Alloys and Compounds Journal Issue: 1-2 Vol. 338
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
ANNEALING
AUGER ELECTRON SPECTROSCOPY
ELECTRON DIFFRACTION
SURFACE AL-PD-MN-GA QUASICRYSTAL