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

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Author(s): Robert A. Dragoset; P First; Joseph A. Stroscio; Daniel T. Pierce; Robert Celotta;
Title: Characterization of Epitaxial Fe on GaAs(110) By Scanning Tunneling Microscopy
Published: January 01, 1989
Abstract: 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: Materials Research Society Symposium
Volume: 151
Location: Pittsburgh, PA
Dates: April 30-May 2, 1989
Research Areas: Scanning tunneling microscopy (STM)
PDF version: PDF Document Click here to retrieve PDF version of paper (385KB)