Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7938773 | Superlattices and Microstructures | 2018 | 9 Pages |
Abstract
The liquid phase heteroepitaxial growth on convex substrate is investigated with the binary phase field crystal (PFC) model. The paper aims to focus on the transformation of the morphology of epitaxial films on convex substrate with two different radiuses of curvature (Ω) as well as influences of substrate vicinal angles on films growth. It is found that films growth experience different stages on convex substrate with different radiuses of curvature (Ω). For Ωâ¯=â¯512Îx, the process of epitaxial film growth includes four stages: island coupled with layer-by-layer growth, layer-by-layer growth, island coupled with layer-by-layer growth, layer-by-layer growth. For Ωâ¯=â¯1024Îx, film growth only experience islands growth and layer-by-layer growth. Also, substrate vicinal angle (Ï) is an important parameter for epitaxial film growth. We find the film can grow well when Ïâ¯=â¯2° for Ωâ¯=â¯512Îx, while the optimized film can be obtained when Ïâ¯=â¯4° for Ωâ¯=â¯512Îx.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yanli Lu, Tinghui Zhang, Zheng Chen,