Study of preferential sputtering and segregation effects on the surface composition of AlPdMn quasi‐crystals | Zendy

Samavat Feridoun | Zendy; Gladys Michael J. | Zendy; Jenks Cynthia J. | Zendy; Lograsso Thomas A. | Zendy; King Bruce V. | Zendy; O'Connor D. John | Zendy

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Study of preferential sputtering and segregation effects on the surface composition of AlPdMn quasi‐crystals

Author(s) -

Samavat Feridoun,

Gladys Michael J.,

Jenks Cynthia J.,

Lograsso Thomas A.,

King Bruce V.,

O'Connor D. John

Publication year - 2008

Publication title -

surface and interface analysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.52

H-Index - 90

eISSN - 1096-9918

pISSN - 0142-2421

DOI - 10.1002/sia.2769

Subject(s) - sputtering , annealing (glass) , analytical chemistry (journal) , chemistry , ion , crystallography , materials science , thin film , metallurgy , nanotechnology , organic chemistry , chromatography

Using 2 keV He + and Ne + low‐energy ion scattering (LEIS), it was found that the Al/Pd concentration ratio at the surface of a nominally Al 69.9 Pd 20.5 Mn 9.6 quasi‐crystal decreases to a steady‐state value under bombardment as a result of preferential sputtering. Sputtering of an annealed surface results in a significant increase in Mn concentration on the surface which remained at annealing temperatures below 575 K. Variations of the Mn/Pd and Al/Pd ratios have been measured by LEIS as a function of temperature in the range 295–975 K for clean‐annealed and sputtered surfaces. The results show that Al/Pd ratio does not significantly change from 295 to 575 K for both He + and Ne + but increases with sample temperatures up to 875 K. Copyright © 2008 John Wiley & Sons, Ltd.

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