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Applied Physics A

, 94:467 | Cite as

Magnetic-dichroism study of iron silicides formed at the Fe/Si(100) interface

  • I. I. Pronin
  • M. V. Gomoyunova
  • D. E. Malygin
  • D. V. Vyalikh
  • Y. S. Dedkov
  • S. L. Molodtsov
Article

Abstract

The interplay between the phase composition, electronic structure, and magnetic properties of the Fe/Si(100)2×1 interface has been studied at the initial stages of its formation (at Fe doses up to 8 Å). The experiments were carried out in ultra high vacuum by using high-resolution photoelectron spectroscopy with synchrotron radiation. The interface magnetic properties were examined in terms of magnetic linear dichroism in angle-resolved Fe 3p core-level photoemission. It was found that at room temperature a disordered Fe–Si solid solution is formed at the first stage of Fe deposition (≤3.4 Å). In the coverage range of 3.4–4.3 Å the solid solution transforms into Fe3Si. However, the in-plane ferromagnetic ordering of the silicide occurs only at 6.8 Å Fe that demonstrates the thickness dependence of the magnetic properties of Fe3Si. The subsequent sample annealing to 150°C transforms Fe3Si to ε-FeSi, leading to the disappearance of ferromagnetic behavior.

PACS

75.70.Ak 79.60.Dp 

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • I. I. Pronin
    • 1
  • M. V. Gomoyunova
    • 1
  • D. E. Malygin
    • 1
  • D. V. Vyalikh
    • 2
  • Y. S. Dedkov
    • 2
  • S. L. Molodtsov
    • 2
    • 3
  1. 1.Ioffe Physico-Technical Institute of the Russian Academy of SciencesSt. PetersburgRussia
  2. 2.Institut für Festkörperphysik, Technische Universität DresdenDresdenGermany
  3. 3.V.A. Fock Institute of PhysicsSt. Petersburg State UniversitySt. PetersburgRussia

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