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Hyperfine Interactions

, Volume 168, Issue 1–3, pp 959–964 | Cite as

Formation of Mn-doped iron silicides by ball milling

  • J. Desimoni
  • S. M. Cotes
  • M. A. Taylor
  • R. C. Mercader
Article

Abstract

Using X-ray diffraction (XRD) and Mössbauer spectroscopy, we have studied the sequence of phase formations in the solid Mn-doped iron silicide series Fe1−x Mn x Si2, with 0.00  ≤  x  ≤  0.12, in samples prepared by mechanical alloying from the pure elements. The milling was carried out at room temperature in Ar atmosphere in a horizontal mill for 15 h. The XRD patterns display broad lines, which can be ascribed to stable and metastable iron silicides like β-FeSi2, ɛ-FeSi, α-FeSi2, MnSi, and Si. The set of hyperfine parameters obtained support the coexistence of β-FeSi2, α-FeSi2 and ɛ-FeSi, in agreement with the XRD results. No replacement of Fe by Mn atoms in the regular sites of β-FeSi2 has been observed.

Key words

iron silicides mechanical alloying phase doping 

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • J. Desimoni
    • 1
  • S. M. Cotes
    • 1
  • M. A. Taylor
    • 1
  • R. C. Mercader
    • 1
  1. 1.Departamento de Física, Facultad de Ciencias Exactas, IFLP, CONICETUniversidad Nacional de La PlataLa PlataArgentina

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