Ad- and Desorption of Oxygen at Metal-Oxide Interfaces: Numerical Approach for Concentration-Dependent Diffusion Coefficient

Abstract:

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A numerical approach for the segregation of atomic oxygen at Ag/MgO interfaces is presented. A general segregation kinetics is considered and the coupled system of differ- ential equations is solved due to a one-dimensional finite difference scheme which accounts for concentration-dependent diffusion coefficients. Based on a model oxide distribution, the influence of the concentration-dependency is numerically investigated and compared with the solution for constant coefficients. In addition, the numerical approach allows for the consider- ation of general boundary conditions, specimen sizes and time-dependent material and process parameters.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 258-260)

Edited by:

Andreas Öchsner and José Grácio

Pages:

360-365

DOI:

10.4028/www.scientific.net/DDF.258-260.360

Citation:

M. Stasiek and A. Öchsner, "Ad- and Desorption of Oxygen at Metal-Oxide Interfaces: Numerical Approach for Concentration-Dependent Diffusion Coefficient", Defect and Diffusion Forum, Vols. 258-260, pp. 360-365, 2006

Online since:

October 2006

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$35.00

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