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Superparamagnetism in Heterogeneous AgFe Thin Films – A Low Energy μSR Study

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Abstract

This paper describes a study of superparamagnetism in iron nanoclusters using low energy μSR, including for the first time zero field measurements, which yield an intrinsic nanocluster superparamagnetic relaxation rate of ν0=67±15 MHz and an energy barrier of ΔE=37±4 K. TEM micrographs of the embedded clusters show there to be a range of shapes and also sizes, which is bourne out by SQUID magnetometry measurements.

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Authors and Affiliations

  1. School of Engineering, University of Birmingham, Birmingham, B15 2TT, UK

    T. J. Jackson, E. M. Forgan & T. M. Riseman

  2. Labor für Myonspinspektroskopie, Paul Scherrer Institut, CH5232, Villigen PSI, Switzerland

    H. Glückler, E. Morenzoni, T. Prokscha, H. P. Weber, M. Pleines, H. Luetkens & R. Khasonov

  3. Fakultät für Physik, Universität Konstanz, D-78434, Konstanz, Germany

    Ch. Niedermayer, M. Pleines & G. Schatz

  4. IMNF, Technische Universität Braunschweig, D-38106, Braunschweig, Germany

    J. Litterst & H. Luetkens

  5. Universität Zürich, CH-8057, Zürich, Switzerland

    H. Keller & R. Khasonov

  6. School of Engineering, University of Birmingham, Birmingham, B15 2TT, UK

    T. S. Rong

  7. Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK

    C. Binns

Authors
  1. T. J. Jackson
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  2. E. M. Forgan
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  3. T. M. Riseman
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  4. H. Glückler
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  5. E. Morenzoni
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  6. T. Prokscha
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  7. H. P. Weber
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  8. Ch. Niedermayer
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  9. M. Pleines
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  10. G. Schatz
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  11. J. Litterst
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  12. H. Luetkens
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  13. H. Keller
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  15. T. S. Rong
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  16. C. Binns
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Jackson, T.J., Forgan, E.M., Riseman, T.M. et al. Superparamagnetism in Heterogeneous AgFe Thin Films – A Low Energy μSR Study. Hyperfine Interactions 136, 403–408 (2001). https://doi.org/10.1023/A:1020529531039

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  • DOI: https://doi.org/10.1023/A:1020529531039

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