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Acceleration of Diffusional Jumps of Interstitial Fe with Increasing Ge Concentration in Si1 − x Ge x Alloys Observed by Mössbauer Spectroscopy

Weyer, G. ; Gunnlaugsson, H. ; Bharuth-Ram, K. ; Dietrich, M. ; Mantovan, R. ; Naicker, V. ; Naidoo, D. ; Sielemann, R.

In: Hyperfine Interactions, 2004, vol. 158, no. 1-4, p. 417-421

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    Titel
    • Acceleration of Diffusional Jumps of Interstitial Fe with Increasing Ge Concentration in Si1 − x Ge x Alloys Observed by Mössbauer Spectroscopy
    Autor
    • Weyer, G.. ISOLDE Collaboration, EP Division, CERN, 1211, Geneva 23, Switzerland
    • Gunnlaugsson, H.. Institute of Physics and Astronomy, Aarhus University, DK-8000, Aarhus, Denmark
    • Bharuth-Ram, K.. School of Pure and Applied Physics, University of Natal, 4041, Durban, South Africa
    • Dietrich, M.. ISOLDE Collaboration, EP Division, CERN, 1211, Geneva 23, Switzerland
    • Mantovan, R.. Laboratorio MDM-INFM, 20042, Agrate Brianza, Italy
    • Naicker, V.. School of Pure and Applied Physics, University of Natal, 4041, Durban, South Africa
    • Naidoo, D.. School of Pure and Applied Physics, University of Natal, 4041, Durban, South Africa
    • Sielemann, R.. Hahn-Meitner Institute, 14109, Berlin, Germany
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Hyperfine Interactions, 2004, vol. 158, no. 1-4, p. 417-421. Springer Netherlands
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:314322
    Summary
    Radioactive 57Mn isotopes have been implanted into Si1 − x Ge x crystals (x ≤ 0.1) at elevated temperatures for Mössbauer studies of the diffusion of interstitial 57Fe daughter atoms. The atomic jump frequency is found to increase upon Ge alloying. This is attributed to a lowering of the activation energy, i.e. the saddle point energy at hexagonal interstitial sites with Ge neighbour atoms