Abstract
Ballistic deposition of hard discs has been used for computer simulation of thin film growth over a step on a substrate surface. Up to 16 000 particles were deposited per simulation using an angular distribution of particle trajectories representative of planar magnetron sputter deposition and incorporating a surface mobility model for deposited particles. The simulated films show a surface profile evolution during growth and an orientation of columnar film microstructure that are very close to the surface profile and microstructure observed in real films of aluminum sputter deposited over an oxide step on a silicon substrate.
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