• DocumentCode
    1531720
  • Title

    Mossbauer measurements for a nanocrystalline Fe44Co44Zr7B4Cu1 alloy

  • Author

    Kopcewicz, M. ; Grabias, A. ; Willard, M.A. ; Laughlin, D.E. ; McHenry, M.E.

  • Author_Institution
    Inst. of Electron. Mater. Technol., Warsaw, Poland
  • Volume
    37
  • Issue
    4
  • fYear
    2001
  • fDate
    7/1/2001 12:00:00 AM
  • Firstpage
    2226
  • Lastpage
    2228
  • Abstract
    A two phase microstructure, consisting of nanocrystallites surrounded by an amorphous matrix, was produced by a melt spinning processing route. Alloys of this type have extrinsic properties that are dependent on the relative amounts of the amorphous and nanocrystalline phases. One method for examination of the properties of the nanocrystalline and amorphous phases is by Mossbauer spectroscopy. This paper examines ribbons with the composition of Fe44Co44 Zr7B4Cu1, both as-spun and after annealing at 650°C for 1 hour. Three Mossbauer techniques were used to examine these materials, including: transmission measurements, conversion electron Mossbauer spectroscopy, and radio frequency Mossbauer. The transmission spectrum for the annealed HITPERM alloy is composed of two superimposed sextets corresponding to the nanocrystalline FeCo and retained amorphous phases. The rf-Mossbauer results fail to show collapse of the sextet, indicating a large magnetocrystalline anisotropy of the nanocrystalline phase
  • Keywords
    Mossbauer effect; annealing; boron alloys; cobalt alloys; copper alloys; ferromagnetic materials; hyperfine interactions; iron alloys; magnetic anisotropy; melt spinning; nanostructured materials; soft magnetic materials; zirconium alloys; 650 C; Fe44Co44Zr7B4Cu1 ; HITPERM alloy; RF Mossbauer spectroscopy; amorphous phase; annealing; conversion electron Mossbauer spectroscopy; hyperfine field; magnetocrystalline anisotropy; melt spinning; nanocrystalline phase; soft magnetic material; transmission Mossbauer spectroscopy; two-phase microstructure; Amorphous materials; Annealing; Electrons; Frequency measurement; Iron; Magnetic materials; Microstructure; Spectroscopy; Spinning; Zirconium;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.951131
  • Filename
    951131
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1531720