Abstract
The room-temperature growth of Fe on Cu(100) has been studied using the scanning tunneling microscope (STM) to determine low-coverage growth mode and local structures related to the FCC-BCC structural transformation. Results for submonolayer deposition demonstrate an initial interchange of deposited Fe atoms with substrate Cu. This leads to a highly rough Fe-Cu interface and growth characteristics that for different experimental techniques can resemble 3-D island growth or layer-by-layer growth. For a thickness ~14 monolayers, the FCC-BCC transition is observed to occur via the formation of fairly large martensitic grains, rather than by a change in atomic aggregation. The implications of the instability of FCC-Fe, as evident in both low- and high-coverage data, are considered.
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Chambliss, D.D., Johnson, K., Kalki, K. et al. Initial Growth and Morphology of Ultrathin Magnetic Films Studied Using Scanning Tunneling Microscopy. MRS Online Proceedings Library 313, 713–722 (1993). https://doi.org/10.1557/PROC-313-713
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