Fuqian Yang 2005 J. Phys. D: Appl. Phys. 38 3938 doi:10.1088/0022-3727/38/21/016
Fuqian Yang
Show affiliationsThe surface evolution of an elastic conducting material subject to an infinitesimal surface perturbation and uniform loading in an electric field was evaluated with respect to lattice diffusion. A dispersion relation describing morphological evolution of the elastic material as a function of the electric field intensity was derived, and the time evolution of the surface perturbation was obtained. The critical spatial frequency of the infinitesimal surface perturbation, at which the growth rate of the perturbation is zero, increases with the increase of the electric field intensity and is independent of Young's modulus of the elastic halfspace. An electrical field enhances the surface growth of elastic conducting solids for atomic migration controlled by lattice diffusion, while tensile stress tends to smooth surface perturbations.
68.35.B- Structure of clean surfaces (and surface reconstruction)
66.30.Dn Theory of diffusion and ionic conduction in solids
62.20.F- Deformation and plasticity
68.35.Fx Diffusion; interface formation
Issue 21 (7 November 2005)
Received 1 April 2005, in final form 25 August 2005
Published 24 October 2005
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