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Cobalt-silicide structures studied by Mössbauer spectroscopy |
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| Authors: | I. Dézsi H. Engelmann U. Gonser G. Langouche |
| Affiliation: | 1. Angewandte Physik, Universit?t des Saarlandes, D-6600, Saarbrücken, Germany 3. Instituut voor Kern-en Stralingsfysika, Katholieke Universiteit Leuven, B-3030, Heverlee, Belgium 2. Central Research Institute for Physics, Budapest, Hungary |
| Abstract: | Mössbauer spectroscopy of cobalt-silicides proved the existence of three stoichiometric phases: CoSi2, CoSi and Co2Si. The values of the hyperfine parameters indicated covalent bonds between Co and Si in all phases and could be understood on the basis of their crystallographic structure and of theoretical predictions for the electronic structure. For CoSi2, anomalous spectra were obtained, the origin of which was not clear. The different spectra of the cobalt-silicides permit the prospective use of Mössbauer spectroscopy for the study of formation and structure of Co/silicide/silicon interfaces. |
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