The amount of Fe deposited this way can be set via the controlled desorption of the CO byproduct. However, the films grown this way proved to contain significant amount of carbon impurities.
Further research is needed to optimize the deposition conditions.
Reference data are provided for the clean surface in the top panel for comparison. The data indicate that the film contains some imbedded carbon impurities. The energy diagrams provided below highlight the differences between the surface chemistry of iron and tungsten carbonyls. This project is currently not active.