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Characterization of Epitaxial Fe on GaAs(110) By Scanning Tunneling Microscopy



Robert A. Dragoset, P First, Joseph A. Stroscio, Daniel T. Pierce, Robert Celotta


Iron on GaAs(110) comprises an interesting system not only due to small lattice mismatch, 1.4%, but also because of the magnetic properties of the overlayer. In the present work, scanning tunneling microscopy (STM) was used to investigate bcc Fe films in the 0.1 Aring} to 20 Aring} thinkness range, grown at 300 K and 450 K substrate temperatures. STM images show Volmer-Weber growth with the formation of 3-D Fe islands20-30 Aring} in diameter for 0.1-1 Aring} deposition at 300 K, increasing to 40-50 Aring} for thicker films. Iron island sizes at low coverage and thin film roughness at higher coverages both show significant dependence upon growth temperature.
Conference Dates
April 30-May 2, 1989
Conference Location
Pittsburgh, PA, US
Conference Title
Materials Research Society Symposium


Dragoset, R. , First, P. , Stroscio, J. , Pierce, D. and Celotta, R. (1989), Characterization of Epitaxial Fe on GaAs(110) By Scanning Tunneling Microscopy, Materials Research Society Symposium, Pittsburgh, PA, US, [online], (Accessed June 20, 2024)


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Created December 31, 1988, Updated October 12, 2021