SCALING LAWS IN THERMAL RELAXATION OF FRACTAL AGGREGATES

被引：36

作者：

IRISAWA, T

UWAHA, M

SAITO, Y

机构：

[1] NAGOYA UNIV,DEPT PHYS,CHIKUSA KU,NAGOYA,AICHI 46401,JAPAN

[2] KEIO UNIV,DEPT PHYS,KOHOKU KU,YOKOHAMA,KANAGAWA 223,JAPAN

来源：

EUROPHYSICS LETTERS | 1995年 / 30卷 / 03期

关键词：

D O I：

10.1209/0295-5075/30/3/003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study shape relaxation of a two-dimensional fractal aggregate, during annealing after the rapid crystallization on a substrate. The edge length of the aggregate decreases with time in a power law with the exponent (d - 1 - D)/(beta + 1), where d = 2 is the spatial dimension, D is the fractal dimension and beta depends on the relaxation mechanism as to be 3, 2 and 1 for edge diffusion, surface diffusion and edge kinetics, respectively. With Monte Carlo simulation, we confirm the predicted exponents for the diffusion-limited aggregation with two different diffusion mechanisms.

引用

页码：139 / 144

页数：6

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