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Theoretical Analysis of Faceted Void Dynamics in Metallic Thin Films Under Electromigration Conditions

Published online by Cambridge University Press:  10 February 2011

Henry S. Ho ,
M. Rauf Gungor  and
Dimitrios Maroudas
Henry S. Ho
Affiliation:
Department of Chemical Engineering, University of California, Santa Barbara, CA 93106-5080
M. Rauf Gungor
Affiliation:
Department of Chemical Engineering, University of California, Santa Barbara, CA 93106-5080
Dimitrios Maroudas*
Affiliation:
Department of Chemical Engineering, University of California, Santa Barbara, CA 93106-5080
*
(a)To whom correspondence should be addressed; E-mail: dimitris@calypso.ucsb.edu
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Abstract

A theoretical analysis is presented of the electromigration-induced dynamics of transgranular voids in metallic thin films. The analysis is based on self-consistent dynamical simulations of current-driven void surface propagation coupled with the distribution of the electric field in the metallic film. The simulation predictions highlight the rich nonlinear dynamics of current-driven evolution of voids that become faceted due to the strongly anisotropic nature of surface diffusion. The numerical results are analyzed based on approximate analytical solutions to faceted void migration and a linearized theory for the morphological stability of planar void facets.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 529: Symposia BB – Computational & Mathematical Models of Microstructural Evolution , 1998 , 21
Copyright
Copyright © Materials Research Society 1998

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