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

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Physical Review B, ISSN: 0163-1829, Vol: 54, Issue: 9, Page: 6301-6306

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Jenks, Cynthia J.; Chang, S.-L.; Anderegg, James W.; Thiel, Patricia A.; Lynch, David W.
American Physical Society (APS)
Materials Science; Physics and Astronomy; Ames Laboratory; quasicrystalline; Doniach-Sunjic
article description
Photoelectron spectra of a fivefold quasicrystalline alloy (Formula presented)(Formula presented)(Formula presented) and a related cubic alloy (Formula presented)(Formula presented)(Formula presented) reveal two noteworthy features. The first is that the Pd (Formula presented) 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 (Formula presented) line is very sharp in the quasicrystal. Fitting the experimental peaks with a Doniach-Sunjic line shpae suggests that the position and density of Mn states near (Formula presented) is very sensitive to the structural and/or chemical environment of Mn in the alloys, and that this accounts for the shape of the (Formula presented) Mn line. The sharpness of the Mn line may be a fingerprint of the quasicrystalline phase within the AlPdMn family. © 1996 The American Physical Society.