Atomic scale modeling of vicinal surface growth from melts using the phase-field crystal method

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	Atomic scale modeling of vicinal surface growth from melts using the phase-field crystal method
	Tang, S ; Wang, ZJ ; Guo, YL ; Wang, JC ; Yu, YM ; Zhou, YH
刊名	JOURNAL OF CRYSTAL GROWTH
	2013
卷号	374 页码:11
关键词	Computer simulation Growth models Nanostructures Surfaces
ISSN号	0022-0248
通讯作者	Wang, JC (reprint author), Northwestern Polytech Univ, State Key Lab Solidificat Proc, Youyi Western Rd 127, Xian 710072, Peoples R China.
中文摘要	Using the phase-field crystal method, we investigated the bcc {1 0 1} vicinal surface growth from melts at the atomic scale with emphasis on the growth kinetics of two growth modes: step flow growth and island growth on terrace. Simulation results show that, for step flow growth, with the decrease of terrace width, the competition for feeding atoms between neighboring steps causes growth rate vs. step density to deviate from a linear relationship, and finally converge to a finite value. The step crystal direction also strongly influences the growth kinetics: vicinal surface with steps along the closest packed direction-[1 1 1] grows slower than that with [0 0 1] step. For island growth on terrace, the growth exponent of each layer in multi-layer island gradually transits from 1/2 for the top layer to 1/3 for the bottom layer, which demonstrates the transition from global diffusion controlled growth for top layer to surface diffusion controlled growth for bottom layer. The growth mechanism selection map with respect to terrace width and supersaturation is summarized and atom attaching rates of different growth mechanisms are also compared. (c) 2013 Elsevier B.V. All rights reserved.
资助信息	Nature Science Foundation of China [10974228, 51071128]; National Basic Research Program of China [2011CB610401]; State Key Laboratory of Solidification Processing in NWPU [SKLSP201001]; Program for New Century Excellent Talents in University; Doctorate Foundation of Northwestern Polytechnical University [CX201106]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56791]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Tang, S,Wang, ZJ,Guo, YL,et al. Atomic scale modeling of vicinal surface growth from melts using the phase-field crystal method[J]. JOURNAL OF CRYSTAL GROWTH,2013,374:11.
APA	Tang, S,Wang, ZJ,Guo, YL,Wang, JC,Yu, YM,&Zhou, YH.(2013).Atomic scale modeling of vicinal surface growth from melts using the phase-field crystal method.JOURNAL OF CRYSTAL GROWTH,374,11.
MLA	Tang, S,et al."Atomic scale modeling of vicinal surface growth from melts using the phase-field crystal method".JOURNAL OF CRYSTAL GROWTH 374(2013):11.