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Magnetism in Nanoscale Fe Clusters Studied by Dichroism in X-ray Absorption and Photoemission

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Magnetism and Synchrotron Radiation

Part of the book series: Lecture Notes in Physics ((LNP,volume 565))

Abstract

Dichroism has been used to study magnetism in mass-selected Fe nanoclusters adsorbed on surfaces in UHV as a function of particle size and density. XMCD shows enhanced orbital, m L and spin, m S magnetic moments in exposed 300-atom particles adsorbed on graphite that decrease towards the bulk value with increasing particle size or density on the surface. Coating exposed 400-atom clusters with Co in situ reduces m L but increases m S yielding a total moment 13% higher than the bulk. The isolated clusters show a cubic anisotropy with a blocking temperature below 10K and an anisotropy constant about 10 times the bulk value. Dense cluster films develop an in-plane anisotropy and remanence at higher temperatures.

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Author information

Authors and Affiliations

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

    C. Binns, S. H. Baker, M. J. Maher & S. C. Thornton

  2. School of Physics and Astronomy, University of Nottingham, NG7 2RD, Nottingham, UK

    K. W. Edmonds

  3. ESRF, BP 220, 38043, Grenoble, France

    O. Tjernberg & N.B. Brookes

Authors
  1. C. Binns
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  2. K. W. Edmonds
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  3. S. H. Baker
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  4. M. J. Maher
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  5. S. C. Thornton
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  6. O. Tjernberg
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  7. N.B. Brookes
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Editor information

Editors and Affiliations

  1. CNRS, IPCMS-GEMME, 23, rue du Loess, 67037, Strasbourg Cedex, France

    Eric Beaurepaire  & Jean Paul Kappler  & 

  2. Université Paris Sud, LURE, bât. 209 d, 91898, Orsay Cedex, France

    Gérard Krill

  3. CNRS, IPCMS-GSI, 23, rue du Loess, 67037, Strasbourg Cedex, France

    Fabrice Scheurer

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© 2001 Springer-Verlag Berlin Heidelberg

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Binns, C. et al. (2001). Magnetism in Nanoscale Fe Clusters Studied by Dichroism in X-ray Absorption and Photoemission. In: Beaurepaire, E., Kappler, J.P., Krill, G., Scheurer, F. (eds) Magnetism and Synchrotron Radiation. Lecture Notes in Physics, vol 565. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44954-X_18

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  • DOI: https://doi.org/10.1007/3-540-44954-X_18

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-42047-7

  • Online ISBN: 978-3-540-44954-6

  • eBook Packages: Springer Book Archive

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