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Size dependence of the magnetic moments of exposed nanoscale iron particles
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2001 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 231, no 1, 113-119 p.Article in journal (Refereed) Published
Abstract [en]

The magnetic moments in exposed, mass-selected, nanoscale Fe clusters in the size range 1.89-2.20 nm (300-475 atoms), deposited onto graphic in situ have been measured by X-ray magnetic circular dichroism. The smallest clusters possess moments that are enhanced by around 4% for m(spin) and 80% for m(orb) and decrease towards the bulk value with increasing size. The larger clusters show an in-plane anisotropy that is consistent with the anisotropy in the orbital moment. The smallest clusters are, within experimental error, magnetically isotropic. The anisotropy constant in the 475-atom clusters is significantly higher than the bulk value.

Place, publisher, year, edition, pages
2001. Vol. 231, no 1, 113-119 p.
Keyword [en]
nanoscale magnetism, ray circular-dichroism, transition-metals, orbital magnetism, sum-rules, clusters, spin, fe, co, cobalt, nanoparticles
Identifiers
URN: urn:nbn:se:kth:diva-20671ISI: 000168970100019OAI: oai:DiVA.org:kth-20671DiVA: diva2:339367
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Tjernberg, Oscar

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