arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.6477cond-mat.mtrl-sci
收藏

离子束溅射Al-薄膜生长动力学的动态标度理论

Growth Kinetics of Ion Beam Sputtered Al-thin films by Dynamic Scaling Theory

Neha Sharma, K. Prabakar, S. Dash, A. K. Tyagi

摘要:

本文报道了离子束溅射铝薄膜生长动力学的研究。动力学标度理论被用来推导动力学从AFM测量。AFM成像显示,表面包含明显不同的形态。沉积时间的变化导致了这种独特性。已经确定的增长管理静态(α)以及动态(β)标度指数。指数(α)随着沉积时间从3分钟增加到15分钟而降低。因此,界面宽度(xi)也随着临界长度(Lc)而减小,并伴随着表面粗糙度的增加。表面扩散成为在3分钟的短时间内进行的沉积期间发生的主要表面粗糙化现象。将沉积时间延长至15分钟使体扩散过程占主导地位,这最终导致连续膜的平滑化。

英文摘要:

This paper reports the study of growth kinetics of ion beam sputtered aluminum thin films. Dynamic scaling theory was used to derive the kinetics from AFM measurements. AFM imaging revealed that surface incorporates distinctly different morphologies. Variation in deposition times resulted in such distinctiveness. The growth governing static (alpha) as well as dynamic (beta) scaling exponents have been determined. The exponent (alpha) decreased as the deposition time increased from 3 to 15 minutes. Consequently, the interfacial width (xi) also decreased with critical length (Lc), accompanied with an increase in surface roughness. Surface diffusion becomes a major surface roughening phenomenon that occurs during deposition carried out over a short period of 3 minutes. Extension of deposition time to 15 minutes brought in bulk diffusion process to dominate which eventually led to smoothening of a continuous film.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑