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Local surface segregations of implanted aluminum in an iron crystal with a low density of defects

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Abstract

The surface distribution of elements is studied by scanning a 3-MeV proton beam along the surface of a bcc-Fe sample implanted with aluminum ions in the dose interval (1–50) · 1016 cm−2. Ring-shaped regions, up to 30 μm in diameter, with a high density of aluminum, which appear at implantation doses (5–20) · 1016 cm−2, are observed. These regions appear as a result of radiation-stimulated segregation processes. A mechanism based on the existence of a low density of dislocations in the initial crystal is proposed to explain the implanted impurity segregation processes.

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Authors and Affiliations

  1. Sumy Institute of Surface Modification, 244030, Sumy, Ukraine

    V. I. Lavrent’ev & A. D. Pogrebnyak

  2. Nuclear Physics, Oxford University, Oxford, OX 3RH, UK

    R. Sandrik

Authors
  1. V. I. Lavrent’ev
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  2. A. D. Pogrebnyak
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  3. R. Sandrik
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Additional information

Pis’ma Zh. Éksp. Teor. Fiz. 65, No. 1, 86–89 (10 January 1997)

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Lavrent’ev, V.I., Pogrebnyak, A.D. & Sandrik, R. Local surface segregations of implanted aluminum in an iron crystal with a low density of defects. Jetp Lett. 65, 91–94 (1997). https://doi.org/10.1134/1.567331

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  • DOI: https://doi.org/10.1134/1.567331

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