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The Effect of Atomic Mixing on the Depth Profiles of Metal Markers in Silicon

Published online by Cambridge University Press:  25 February 2011

B. V. King
Affiliation:
Physics Department, Arizona State University, Tempe, AZ 85287
D. G. Tonn
Affiliation:
Physics Department, Arizona State University, Tempe, AZ 85287
I.S.T. Tsong
Affiliation:
Physics Department, Arizona State University, Tempe, AZ 85287
J. A. Leavitt
Affiliation:
Physics Department, University of Arizona, Tucson, AZ 85721
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Abstract

Atomic mixing effects of sputter depth-profiles are modeled by a diffusion theory with a depth-dependent diffusion constant D. The model is compared to SIMS depth profiles, using 5 keV Ar+ bombardment of dilute thin-film multilayers of Al, Ag, Ti and Mo in silicon. The experimental values of D can be explained by cascade mixing and radiation enhanced diffusion within the cascade for Al, Ag and Ti markers but not for the Mo marker.

Type
Research Article
Copyright
Copyright © Materials Research Society 1984

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