Phases of cobalt-iron ternary disilicides

Cobalt–iron transition-metal disilicides were investigated by Mössbauer effect and x-ray diffraction in order to determine the concentration range of their homogeneous and separate phase formation. Except at low Co or Fe concentrations, Co and Fe formed separate CoSi2 and FeSi2 phases. Up to 10 at %...

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Bibliographic Details
Published in:Applied physics letters 1998-06, Vol.72 (22), p.2826-2828
Main Authors: Dézsi, I., Fetzer, Cs, Szűcs, I., Langouche, G., Vantomme, A.
Format: Article
Language:English
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Summary:Cobalt–iron transition-metal disilicides were investigated by Mössbauer effect and x-ray diffraction in order to determine the concentration range of their homogeneous and separate phase formation. Except at low Co or Fe concentrations, Co and Fe formed separate CoSi2 and FeSi2 phases. Up to 10 at % Co was found soluble in β-FeSi2; Fe dissolved in CoSi2 below 1.5 at % and was positioned at two different sites of cubic symmetry. The results obtained for the phase formation in thin layers of epitaxial CoSi2 on Si implanted with Fe were in agreement with the results obtained for the bulk samples.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.121470