Photoelectron spectra of an Al{sub 70}Pd{sub 21}Mn{sub 9} quasicrystal and the cubic alloy Al{sub 60}Pd{sub 25}Mn{sub 15}

Journal Article · Sun Sep 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.6301· OSTI ID:383246

Jenks, C J; Chang, S; Anderegg, J W; Thiel, P A; Lynch, D W ^[1]

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1. Departments of Physics and Chemistry and Ames Laboratory, Iowa State University, Ames, Iowa 50011 (United States)

Photoelectron spectra of a fivefold quasicrystalline alloy Al{sub 70}Pd{sub 21}Mn{sub 9} and a related cubic alloy Al{sub 60}Pd{sub 25}Mn{sub 15} reveal two noteworthy features. The first is that the Pd 3{ital d} lines fall at binding energies which are 2.2 eV higher than in pure Pd. A similar shift is observed for Pd in other alloys. The second noteworthy feature is that the Mn 2{ital p}{sub 3/2} line is very sharp in the quasicrystal. Fitting the experimental peaks with a Doniach-Sunjic line shape suggests that the position and density of Mn states near {ital E}{sub {ital F}} is very sensitive to the structural and/or chemical environment of Mn in the alloys, and that this accounts for the shape of the 2{ital p}{sub 3/2} Mn line. The sharpness of the Mn line may be a fingerprint of the quasicrystalline phase within the AlPdMn family. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Ames National Laboratory
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 383246
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 9 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
COMPARATIVE EVALUATIONS
ELECTRONIC STRUCTURE
ENERGY-LEVEL DENSITY
MANGANESE ALLOYS
PALLADIUM ALLOYS
PHOTOELECTRON SPECTROSCOPY
QUASICRYSTALS