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Study of stability of ultrathin Au films on Cu(100) using positron annihilation-induced Auger electron spectroscopy (PAES)

Published online by Cambridge University Press:  03 March 2011

G. Yang ,
J.H. Kim ,
K.H. Lee ,
S. Yang ,
A.R. Koymen  and
A.H. Weiss
G. Yang
Affiliation:
Materials Science and Engineering Program, University of Texas at Arlington, Box 19059, Arlington, Texas 76019-0059
J.H. Kim
Affiliation:
Department of Physics, University of Texas at Arlington, Box 19059, Arlington, Texas 76019-0059
K.H. Lee
Affiliation:
Department of Physics, University of Texas at Arlington, Box 19059, Arlington, Texas 76019-0059
S. Yang
Affiliation:
Department of Physics, University of Texas at Arlington, Box 19059, Arlington, Texas 76019-0059
A.R. Koymen
Affiliation:
Department of Physics, University of Texas at Arlington, Box 19059, Arlington, Texas 76019-0059
A.H. Weiss
Affiliation:
Department of Physics, University of Texas at Arlington, Box 19059, Arlington, Texas 76019-0059
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Abstract

PAES (Positron Annihilation induced Auger Electron Spectroscopy) intensities from ultrathin Au films deposited at 198 K on Cu(100) were measured as a function of temperature (from 198 K to 348 K) for three different Au coverages. Intermixing of Au and Cu atoms with the increase of temperature was directly monitored. The measurements indicated that the intermixing was not reversible as a function of temperature. EAES (Electron induced Auger Electron Spectroscopy) results were compared with PAES results for each experiment, and the comparison showed the feasibility of PAES over EAES for the study of surface alloy formation as a function of temperature.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 10 , October 1994 , pp. 2534 - 2539
Copyright
Copyright © Materials Research Society 1994

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References

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