Structural determination and magnetic properties for Co-rubrene composite films on Si(1Â 0Â 0)

- For Co-rubrene composite films, a layered structure is observed.
- For thick composite films, surfactant effects of rubrene cause reduced interaction at the film/Si interface.
- For thin composite films, the formation of separated Co clusters results in a larger coercive force.
- By the rubrene concentration, rubrene enhances the quality of the films.