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A Comparison of Atomic Mixing Behaviour of Cu- Au and Cu- W Systems for Room Temperature and Low Temperature Irradiation

Published online by Cambridge University Press:  15 February 2011

Z.L. Wang ,
J.F.M. Westendorp ,
S. Doorn  and
F.W. Saris
Z.L. Wang
Affiliation:
FOM-Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam The Netherlands
J.F.M. Westendorp
Affiliation:
FOM-Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam The Netherlands
S. Doorn
Affiliation:
FOM-Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam The Netherlands
F.W. Saris
Affiliation:
FOM-Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam The Netherlands
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Abstract

300 keV Kr ion irradiations with doses varying from 2× 1015 to 2× 1016 at/cm2 have been applied to initiate mixing of Cu-Au and Cu-W systems. As under normal thermodynamic conditions the Cu-Au system is miscible whereas the Cu-W system is not, the comparison of both systems provides a test for the current theories on ion-beam mixing. A pronounced difference in mixing phenomena is observed for both systems; in the Cu-Au system atomic displacements are one order of magnitude larger than those in the Cu-W system. In addition, a drastic temperature dependence of ion-beam mixing in the Cu-Au system has been found. The mixing is suppressed by lowering the substrate temperature during irradiation. These results show that radiation enhanced diffusion is the mechanism underlying the ion-beam mixing of Cu and Au. Results for the Cu-W system are consistent with a collisional mixing model.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 7 , 1981 , 59
Copyright
Copyright © Materials Research Society 1982

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Footnotes

*

Visiting scientist from Beijing Normal University, Beijing, China.

References

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