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Electrodeposited Epitaxial Fe Subscript 100-x}Co Subscript x} Films on GaAs



J Mallett, Erik B. Svedberg, Mark D. Vaudin, Leonid A. Bendersky, William F. Egelhoff Jr., Thomas P. Moffat


The electrodeposition of epitaxial cube-on-cube Fe _(subscript) 100-x}Co_(subscript) x} films onto n-GaAs is described from ferrous ammonium sulfate solutions containing various concentrations of cobalt sulfate. The cobalt composition in a series of 400nm thick films was varied from 0 to 74 % in proportion to the concentration of cobalt sulfate in the electrolyte. Epitaxial (100) oriented bcc films were produced throughout this range, as confirmed by symmetrical x-ray diffraction and x-ray pole figure measurements. Rocking curve measurements yielded data that could be fitted to the sum of a Lorentzian and a Gaussian, corresponding to the (200) Fe _(subscript) 100-x}Co_(subscript) x} planes and to a residual contribution from GaAs (400) respectively. The full width at half maximum obtained for the film Lorentzians varied from 0.44 degrees to 0.90 degrees and was apparently uncorrelated with composition. X-ray (211) pole figure measurements revealed a high degree of twinning of the (100) bcc Fe _(subscript) 100-x}Co_(subscript) x} consistent with a recent study of Fe films electrodeposited on n-GaAs.
Physical Review B (Condensed Matter and Materials Physics)


colbat, electrodeposition, GaAs


Mallett, J. , Svedberg, E. , Vaudin, M. , Bendersky, L. , Egelhoff Jr., W. and Moffat, T. (2008), Electrodeposited Epitaxial Fe Subscript {100-x}Co Subscript {x} Films on GaAs, Physical Review B (Condensed Matter and Materials Physics) (Accessed June 21, 2024)


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Created October 16, 2008