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A Structural Study of Electrodeposited Fe on GaAs(001)

Author(s)

Erik B. Svedberg, J Mallett, Leonid A. Bendersky, A G. Roy, William F. Egelhoff Jr., Thomas P. Moffat

Abstract

The microstructure of Fe films electrodeposited onto n-GaAs(001) from FeCl_(2) and FeSO_(4)-(NH_(4)-(2)SO_(4) electro;ytes was examined by x-ray and electron diffraction. Symmetrical x-ray diffraction from film deposited from chloride solutions indicates a dominant (001) texture with the presence of additional minority orientations. In contrast, deposition from an ammonium sulfate electrolyte yields films that only exhibit (001) scattering in the )-20 geometry. TEM cross sectional images of films grown in chloride solutions reveal intermittent cube-on-cube epitaxy that is also evident in plan view TEM dark field images. Interestingly, x-ray pole figure measurements for all specimens examined reveal an additional (221) orientation that is undetectable by symmetric 0-20 diffraction. The (221) oriented material most likely derives from twinning of (001) oriented grains during growth.
Citation
Journal of the Electrochemical Society

Keywords

diffraction, electrodeposited
Created August 26, 2016, Updated February 17, 2017