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Author Schmid, A. K. ♦ Hamilton, J. C. ♦ Bartelt, N. C. ♦ Hwang, R. Q.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ COBALT ♦ DIFFUSION ♦ COPPER ♦ RUTHENIUM ♦ MASS TRANSFER ♦ METALLURGICAL EFFECTS ♦ INTERFACES ♦ ALLOYS ♦ ADSORPTION ♦ ANNEALING ♦ ADATOMS
Abstract Interdiffusion profiles across a linear interface separating two metals that are miscible as monolayers [Co and Cu on a Ru(0001) surface] have been measured as a function of time. The interface remains sharp even after substantial intermixing, in dramatic contrast to bulk interdiffusion experiments between miscible metals. The unusual concentration profiles are explained by a combination of adatom surface diffusion and exchange of adatoms with atoms in the monolayer films. A simple Monte Carlo simulation of the adatom exchange mechanism quantitatively agrees with observations. {copyright} {ital 1996 The American Physical Society.}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-09-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 77
Issue Number 14


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