Growth, structure and stability of ultrathin iron films on Cu(001)
Ultrathin iron films deposited at room temperature on Cu(001) were studied by low energy ion scattering. The films do not grow in layer-by-layer fashion; even at submonolayer coverages iron atoms are observed in the second layer due to iron incorporation into the original surface layer. At coverages exceeding 2 monolayers the copper surface is almost completely covered by iron atoms. An fcc (001) structure is adopted by the iron film up to a coverage of 10 monolayers, where a transition to bcc Fe(110) is observed. All as-deposited films show pronounced diffusion of substrate atoms to the surface upon annealing. The onset temperature for this process varies from room temperature for submonolayer films to about 420 K for films completely covering the copper substrate.
Bibliographic Reference: Article: Surface Science, Vol. 307-309 (1994) pp. 490-495
Record Number: 199410748 / Last updated on: 1994-11-28
Original language: en
Available languages: en