Computer simulation of crystallization kinetics with non-Poisson distributed nuclei

Details Computer simulation of crystallization kinetics with non-Poisson distributed nuclei Computer simulation of crystallization kinetics with non-Poisson distributed nuclei

1996-04-30

arxiv.org/abs/cond-mat/9604179v1

Mod. Sim. Mat. Sci. Eng. 4 (1996) 203-214

Physics

Condensed Matter

14 pages including 7 postscript figures, uses epsf.sty and ioplppt.sty

Scientific paper

10.1088/0965-0393/4/2/007

The influence of non-uniform distribution of nuclei on crystallization kinetics of amorphous materials is investigated. This case cannot be described by the well-known Johnson-Mehl-Avrami (JMA) equation, which is only valid under the assumption of a spatially homogeneous nucleation probability. The results of computer simulations of crystallization kinetics with nuclei distributed according to a cluster and a hardcore distribution are compared with JMA kinetics. The effects of the different distributions on the so-called Avrami exponent $n$ are shown. Furthermore, we calculate the small-angle scattering curves of the simulated structures which can be used to distinguish experimentally between the three nucleation models under consideration.

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