Hyperfine Interactions

, Volume 160, Issue 1–4, pp 39–56 | Cite as

Heavy Ion Irradiated Ferromagnetic Films: The Cases of Cobalt and Iron

  • K. P. Lieb
  • K. Zhang
  • G. A. MÜller
  • R. Gupta
  • P. Schaaf


Polycrystalline, e-gun deposited Co, Fe and Co/Fe films, tens of nanometers thick, have been irradiated with Ne, Kr, Xe and/or Fe ions to fluences of up to 5 × 1016 ions/cm2. Changes in the magnetic texture induced by the implanted ions have been measured by means of hyperfine methods, such as Magnetic Orientation Mössbauer Spectroscopy (Fe), and by Magneto-Optical Kerr Effect and Vibrating Sample Magnetometry. In Co and CoFe an hcp → fcc phase transition has been observed under the influence of Xe-ion implantation. For 1016 Xe-ions/cm2, ion beam mixing in the Co/Fe system produces a soft magnetic material with uniaxial anisotropy. The effects have been correlated with changes in the microstructure as determined via X-ray diffraction. The influences of internal and external strain fields, an external magnetic field and pre-magnetization have been studied. A comprehensive understanding of the various effects and underlying physical reasons for the modifications appears to emerge from these investigations.


Rutherford Backscatter Spectroscopy CEMS Soft Magnetic Material Vibrate Sample Magnetometry Magneto Optical Kerr Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • K. P. Lieb
    • 1
  • K. Zhang
    • 1
  • G. A. MÜller
    • 1
  • R. Gupta
    • 1
    • 2
  • P. Schaaf
    • 1
  1. 1.II. Physikalisches Institut and SFB 602Universität GöttingenGöttingenGermany
  2. 2.Institute of InstrumentationDevi Ahilya UniversityIndoreIndia

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