摘要
根据反应限制聚集(reactionlimitedaggregation,RLA)模型,研究表面活性剂存在时的薄膜外延生长动力学过程.研究结果表明,在二维岛的生长初期,分形岛与紧致岛具有不同的岛密度和“死”原子密度(岛的相对总面积)增长方式:分形岛密度随覆盖率生长指数小于1,紧致岛密度的生长指数大于1;分形岛相对总面积随覆盖率线性增长,紧致岛相对总面积随覆盖率非线性增长.
Based on reaction limited aggregation model, we have investigated the dynamical process of film epitaxial growth in the presence of surfactant. The results indicate that there are differences between the growth processes of fractal island and compact island. The growth exponents of fractal islands are greater than I, which that of compact islands are less than 1. On the other hand, 'dead' atom density increases linearly with the coverage in the process of the fractal island growth, but the relations between the density and the coverage are nonlinear in the compact island situation.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第7期3307-3311,共5页
Acta Physica Sinica
基金
中国矿业大学博士科研基金资助的课题.~~
