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Self-diffusion of 71Ge and 31Si in Si –Ge alloys

  • Andreas Strohm , Thilo Voss , Werner Frank EMAIL logo , Pauli Laitinen and Jyrki Räisänen
Published/Copyright: December 7, 2021
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 93 Issue 7

Abstract

The tracer self-diffusion coefficients DT of implanted 71Ge and 31Si in both relaxed monocrystalline SiyGe1 –y epilayers and specimens made from bulk SiyGe1 –y have been measured as functions of temperature T (653 °C ≤ T ≤ 1263 °C) and composition y (0 ≤ y ≤ 1) by means of radio-tracer techniques, in which serial sectioning was done by ion-beam sputtering. For all compositions, the T dependencies of DT for 71Ge and 31Si are of Arrhenius type. The y dependencies of the pre-exponential factors of the self-diffusion coefficients and of the diffusion enthalpies show a break at y ≈ 0.65. This is interpreted in terms of a transition from interstitialcy-(y ≳ 0.65) to vacancy-(y≲ 0.65) mediated self-diffusion.

Keywords: Si –Ge alloys; Self-diffusion of 71Ge and 31Si; Radiotracer technique; Self-diffusion mechanisms
Prof. Dr. Werner Frank Max-Planck-Institut für Metallforschung Heisenbergstr. 3, D-70569 Stuttgart, Germany Tel.: +49 711 6891940 Fax: +49 711 6891922

  1. The authors wish to thank Christian Grodon, Martin Hennemann, Jussi Huikari, and Arto Nieminen for their assistance in carrying out the experiments. The provision of the specimen materials by the institutions listed in Section 2.1 as well as the 71Ge implantations at ISOLDE, CERN, in Geneva, and at Bonn University are appreciated. Financial support by the Academy of Finland within the framework of the Finnish Center of Excellence Program 2000 –2005 (Project No. 44875 in the Nuclear and Condensed Matter Physics Program at JYFL), and by the HPRI Program of the European Community are acknowledged.

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Received: 2002-04-16
Published Online: 2021-12-07

© 2002 Carl Hanser Verlag, München

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https://doi.org/10.3139/ijmr-2002-0124
Keywords for this article
Si –Ge alloys; Self-diffusion of 71Ge and 31Si; Radiotracer technique; Self-diffusion mechanisms

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Editorial
  4. Articles/Aufsätze
  5. A model for the work hardening of WC–Co “hard metals”
  6. On the dispersion strengthening mechanisms in ODS materials
  7. Effect of hydrogen on the mechanical properties of the β titanium alloy Timetal® 21S
  8. Cyclic deformation behaviour of (α + β) titanium alloys under complex mechanical and physiological loading conditions
  9. Assessment of the influence of interdendritic shrinkage cavities on the thermo-mechanical fatigue behaviour of the nickel-base superalloy MAR-M247LC
  10. Effects of static strain aging on residual stress stability and alternating bending strength of shot peened AISI 4140
  11. On the possibilities to enhance the fatigue properties of ultrafine-grained metals
  12. New method of determining stress relaxation behavior in creep machines by controlled unloading
  13. Creep of binary Ni-rich NiTi shape memory alloys and the influence of pre-creep on martensitic transformations
  14. Interaction of high-cycle fatigue with high-temperature creep in superalloy single crystals
  15. A unified description of creep in pure and dispersion-strengthened copper
  16. A new interpretation of flow-stress measurements of high-purity NiAl below room temperature
  17. A mesoscopic plasticity model accounting for spatial fluctuations of plastic strains, internal stresses and dislocation densities
  18. Behavior of X-ray peak widths in the Wilkens model of a restrictedly random distribution of dislocations
  19. Dislocation structure and crystallite size distribution in hexagonal nanomaterials from X-ray peak profile analysis
  20. Werden gewichtsoptimiert konstruierte Bauteile durch die Verwendung von Leichtmetallen wirklich leichter?*)
  21. Strain-induced martensite formation in metastable austenitic steels with varying carbon content
  22. Isothermal bainitic transformation in low alloy steels: factors limiting prediction of the resulting material’s properties
  23. Fatigue damage evolution in a particulate-reinforced metal matrix composite determined by acoustic emission and compliance method
  24. Microstructure and modification mechanisms of Si phase in as-thixoformed alloy A356
  25. Influence of size effect on microstructural changes in cyclically deformed polycrystalline nickel
  26. Self-diffusion of 71Ge and 31Si in Si –Ge alloys
  27. On localised corrosive attack, stress corrosion cracking and corrosion fatigue effects in a hardmetal cutting-tool material
  28. The internal stress during growth of SiC single crystals
  29. Notifications/Mitteilungen
  30. Personal/Personelles
  31. Books/Bücher
  32. DGM Conferences/Training
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