Influence of Gas Entry Point on Plasma Chemistry,Ion Energy and Deposited Alumina Thin Films in Filtered Cathodic Arc |
| |
Authors: | J Rosen P O Å Persson M Ionescu J Pigott D R McKenzie M M M Bilek |
| |
Institution: | (1) School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia;(2) Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW, 2234, Australia |
| |
Abstract: | The effect of gas entry point on the plasma chemistry, ion energy distributions and resulting alumina thin film growth have
been investigated for a d.c. cathodic arc with an aluminum cathode operated in an oxygen/argon atmosphere. Ions of aluminum,
oxygen and argon, as well as ions originating from the residual gas are investigated, and measurements for gas entry at both
the cathode and close to the substrate are compared. The latter was shown to result in higher ion flux, lower levels of ionised
residual gas, and lower ion energies, as compared to gas inlet at the cathode. These plasma conditions that apply when gas
entry at the substrate is used result in a higher film deposition rate, less residual gas incorporation, and more stoichiometric
alumina films. The results show that the choice of gas entry point is a crucial parameter in thin film growth using reactive
PVD processes such as reactive cathodic arc deposition. |
| |
Keywords: | Cathodic arc Gas entry point Ion energy Alumina |
本文献已被 SpringerLink 等数据库收录! |
|