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Structural changes during Ar-ion irradiation of laser-deposited Fe/Ag multilayers

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Abstract

During 350 keV Ar+ irradiation at 77K, laser-deposited Fe−Ag multilayers first show stress relaxation and demixing processes at the interfaces followed by grain coarsening and a supersaturation of the bcc α-Fe phase with Ag due to ballistic mixing. At high fluence, the fcc γ-Fe(Ag) phase (a=3.65 Å) is formed, which can be explained by either chemically guided ballistic short-range relocations or by the occurrence of thermal spikes, where all atoms possess sufficient energy to allow collective structural rearrangements, but only during such a short time that a decomposition due to long-range diffusion is suppressed.

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Authors and Affiliations

  1. Institut für Metallphysik, and Sonderforschungsbereich 345, Universität Göttingen, Hospitalstrasse 3-7, D-37073, Göttingen, Germany

    H. U. Krebs, Y. Luo & M. Störmer

  2. II. Physikalisches Institut, and Sonderforschungsbereich 345, Universität Göttingen, Bunsenstrasse 7-9, D-37073, Göttingen, Germany

    A. Crespo, P. Schaaf & W. Bolse

Authors
  1. H. U. Krebs
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  2. Y. Luo
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  3. M. Störmer
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  4. A. Crespo
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  5. P. Schaaf
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  6. W. Bolse
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Krebs, H.U., Luo, Y., Störmer, M. et al. Structural changes during Ar-ion irradiation of laser-deposited Fe/Ag multilayers. Appl. Phys. A 61, 591–594 (1995). https://doi.org/10.1007/BF01542869

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  • DOI: https://doi.org/10.1007/BF01542869

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