Collective effects during crystal growth in the presence of mobile nonreactive impurities: experiments and simulations

摘要

The growth of a solid phase in a liquid medium containing randomly dispersed mesoscopic impurities is discussed. Particles represent hindrances for the growth front. They can remain static or can be pushed by the advancing interface. The physics of he collective particle motion is outlined. Experiments with Al_2-O_3-SiO_2 impurities in KCl crystal serve as illustrative examples. The collective effects due to the particle concentration are investigated through a kinetic growth model.