THEORY OF THE KINETICS OF NUCLEATION IN ADSORBING LAYER - THE APPROACH BASED ON THE RELAXATION OF ORDER PARAMETER FIELD

摘要

We use a Ginzburg-Landau type equation for the order parameter field to study the growth kinetics of two-dimensional new phase nuclei, as well as the phenomenon of instability of the azimuthal form of growing nuclei. A connection between the developed approach and phenomenological Zeldovich-Volmer (ZV) theory is established. The onset of various types of conditions imposed in ZV theory on the nucleus boundary is considered. We obtain instability diagrams of the angular perturbations and show that the instability occurs when the main growth mechanism is a diffusive one. Also, we determine the parameters region where the criteria obtained in this paper are the same as the results of phenomenological ZV theory and the continuum DLA model. Additionally, we study the criteria for the growth of angular perturbations in the case of a nonquasistationary growth regime. References: 67