Vacancies and Carbon Impurities in Iron

  • A. Vehanen
  • P. Hautojärvi
  • J. Johannson
  • J. Yli-Kauppila
  • P. Moser


Point defects in electron-irradiated high-purity α-iron have been studied by positron lifetime measurements. We show that the migration stage of monovacancies occurs already as low as at 220 K, which results in agglomeration of small three-dimensional vacancy clusters. Furthermore, we irradiated carbon-doped iron specimens, where formation of highly asymmetric monovacancycarbon atom pairs was detected during the migration stage of monovacancies at 220 K.


Positron Lifetime Migration Stage Trapping Rate Carbon Impurity Vacancy Migration 
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Copyright information

© Springer Science+Business Media New York 1981

Authors and Affiliations

  • A. Vehanen
    • 1
  • P. Hautojärvi
    • 2
  • J. Johannson
    • 2
  • J. Yli-Kauppila
    • 2
  • P. Moser
    • 3
  1. 1.Department of PhysicsUniversity of JyväskyläJyväskylä 72Finland
  2. 2.Department of Technical PhysicsHelsinki University of TechnologyEspoo 15Finland
  3. 3.Section de Physique du Solide Département de Recherche FondamentaleCentre d’Etudes NucléairesGrenobleFrance

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