Nucleation and Growth Model for Metal-On-Fcc(100) Metal Deposition

1993 ◽  
Vol 312 ◽  
Author(s):  
M. C. Bartelt ◽  
J. W. Evans
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Growth Model ◽  
Ring Structure ◽  
Nucleation And Growth ◽  
Metal Deposition ◽  
Intensity Profile ◽  
Diffraction Intensity ◽  
Island Size

AbstractWe present results of Monte Carlo simulations of irreversible diffusion-mediated nucleation and growth of square islands during deposition. This model mimics metal-on-fcc(100) metal epitaxy at lower temperatures. Our analysis focuses on the scaling of the island size and separation distributions, and their evolution with coverage. The depletion in the density of nearby island pairs is shown to produce a “Henzler ring” structure in the diffraction intensity profile.

Surface Selective Deconstruction

Fractals ◽  
1997 ◽  
Vol 05 (03) ◽  
pp. 327-332 ◽  
Author(s):  
A. P. Reverberi ◽  
E. Scalas
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Growth Model ◽  
Fourth Order ◽  
Scaling Laws ◽  
Chemical Processes ◽  
Langevin Equations ◽  
Order Linear ◽  
Surface And Interface ◽  
Physico Chemical

Two toy models for surface and interface disaggregation are introduced and some considerations on their relevance for real physico-chemical processes are presented. The models are studied by means of Monte Carlo simulations in 1+1 dimensions and the scaling laws of the interface width w(L, t) are determined. In both cases, the scaling is in agreement with that obtained from the fourth order linear Langevin equations. The result is discussed in relation to another microscopic disaggregation model and to the microscopic growth model of Wolf and Villain.

Monte Carlo simulations for a kinetic growth model

1996 ◽  
Vol 29 (20) ◽  
pp. L527-L531 ◽  
Author(s):  
Roberto N Onody ◽  
Ubiraci P C Neves
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Growth Model ◽  
Kinetic Growth

Scaling and Coarsening in Epitaxial Growth

1998 ◽  
Vol 528 ◽  
Author(s):  
Fereydoon Family ◽  
Jacques G. Amar
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Deposition Rate ◽  
Kinetic Monte Carlo ◽  
Realistic Model ◽  
Island Size ◽  
Island Nucleation ◽  
Homoepitaxial Growth ◽  
Coarsening Behavior ◽  
Kinetic Monte Carlo Simulations

AbstractThe results of recent theoretical and simulational studies of submonolayer and multilayer homoepitaxial growth are discussed. In the submonolayer regime, the results of kinetic Monte Carlo simulations are presented and shown to provide a quantitative explanation for the variation of the submonolayer island density, critical island size, island-size distribution and morphology as a function of temperature and deposition rate found in recent experiments. In multilayer growth, a realistic model for homoepitaxial growth on fcc and bcc lattices which takes into account the correct crystal structure is reviewed. The effects of instabilities which lead to mound formation and coarsening are discussed and a unified picture of the effects of attractive and repulsive interactions at ascending and descending steps on surface morphology and island nucleation is presented. An accurate prediction of the observed mound angle for Fe/Fe(100) deposition is obtained analytically and by kinetic Monte Carlo simulations. The general dependence of the mound angle, and mound coarsening behavior on temperature, deposition rate, and strength of the step barrier in bcc(100) and fcc(100) growth is also presented and compared with recent experiments.

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