Acta Phys. -Chim. Sin. ›› 1997, Vol. 13 ›› Issue (03): 218-223.doi: 10.3866/PKU.WHXB19970307

• ARTICLE • Previous Articles     Next Articles

The Fractal Structure Investigation of Pd Film Deposited on Polyvinyl Formal

Wei Sai-Zhen,Mao Zu-Sui,Wang Lei,Chen Xiao-Feng,Zheng Yong-Ming   

  1. Department of Physics,Zhejiang University,Hangzhou 310027|Plasma Physics Laboratory of High Temperature and High Density,Chengdu 610003
  • Received:1996-09-10 Revised:1996-11-18 Published:1997-03-15
  • Contact: Mao Zu-Sui

Abstract:

 The influence of substrate temperature and of deposition rate upon microstructure of Pd film deposited on Polyvinyl Formale (PVF) has been investigated using TEM. Transition from compact islands to fractal structures has been observed when substrate temperature decreased. The fractal structure appeared at 233-253K. The fractal dimension was measured using the Sandbox method. The fractal patterns of Pd film on PVF at the same temperature varied with changing deposition rate. These fractal structures are stable. The experimental results have been discussed using DLA(Diffusion -Limited-Aggregation) model with active edge diffusion.

Key words: Fractal structure, Pd film, Low temperature, Polyvinyl formale