PII: S0304-8853(96)00515-X
Structure of epitaxial Fe films on MgO(100) J. F. Lawlera, *, R. Schada, S. Jordana and H. Van Kempena a EVSF2, Katholieke Universiteit Nijmegen, Toernooiveld 1 NL 6515 ED Nijmegen Netherlands Available online 13 May 1998.
J. F. Lawlera, *, R. Schada, S. Jordana and H. Van Kempena
We investigated the epitaxial growth of bcc Fe on MgO(100) using STM and LEED as a function of growth temperature. We found the island size and shape to vary with the deposition temperature and post-deposition annealing. Relatively smooth island surfaces can be obtained by deposition around 160°C, however, the island heights distribution is rather irregular then. The rms roughness is lowest for deposition at 110°C. At lower deposition temperatures the islands became more round-shaped, likely due to a reduction of step edge diffusion. Post-deposition annealing to temperatures around 210°C increases the overall variation of the island height distribution.
Author Keywords: Thin films - epitaxial; Structure; Film growth; Scanning tunneling microscopy
Index Terms: Magnetic thin films; Molecular beam epitaxy; Scanning tunneling microscopy; Low energy electron diffraction; Film growth; Deposition; Annealing; Surface roughness; Thermal effects; Magnesia; Atomic force microscopy; Metallic films; Iron; Epitaxial iron films
*Corresponding author.
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