Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9595609 | Surface Science | 2005 | 7 Pages |
Abstract
The growth processes and structures of Fe/Si(1 1 1) ultrathin films grown by solid-phase reactive epitaxy were investigated by coaxial impact-collision ion scattering spectroscopy (CAICISS). It has been revealed that the Fe(1 1 1) thin films with a bcc-type structure were epitaxially grown on a Si(1 1 1) crystal, even at room temperature, and formed a single-domain structure: Fe(1 1 1)ã1¯1¯2ãâ¥Si(1 1 1)ã112¯ã. After annealing at above 600 °C, the Fe(1 1 1) films were transformed into β-FeSi2 via the collapse of the bcc-type structure to an amorphous or polycrystalline structure. On the basis of the thickness dependences of the growth processes, this phenomenon was discussed in terms of the diffusion of Si into Fe thin films.
Keywords
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
R. Tsushima, Y. Michishita, S. Fujii, H. Okado, K. Umezawa, Y. Maeda, Y. Terai, K. Oura, M. Katayama,