Ferromagnetic Spots in Graphite Produced by Proton Irradiation

A proton microbeam produces ferromagnetic spots on a highly oriented graphite surface. The Figure shows the topography and the magnetic force microscopy (MFM) images obtained after irradiating the surface with a beam size of 1 μm × 1 μm and a dose of 0.098 nC μm–2. The strength of the magnetic signa...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2003-10, Vol.15 (20), p.1719-1722
Main Authors: Han, K.-h., Spemann, D., Esquinazi, P., Höhne, R., Riede, V., Butz, T.
Format: Article
Language:English
Subjects:
Ferrimagnetism
Ferromagnetism
Graphite
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Summary:A proton microbeam produces ferromagnetic spots on a highly oriented graphite surface. The Figure shows the topography and the magnetic force microscopy (MFM) images obtained after irradiating the surface with a beam size of 1 μm × 1 μm and a dose of 0.098 nC μm–2. The strength of the magnetic signal is only a factor of ∼ 10 smaller than that obtained on Fe particles.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200305194