Beilstein J. Nanotechnol.2010,1, 101–107, doi:10.3762/bjnano.1.12
magneticforcemicroscopy. Moreover, an exchange bias effect was found, which is likely to be due to oxygen exchange between the iron oxide and the Co layer, and thus forming of an antiferromagnetic CoO layer at the γ-Fe2O3/Co interface.
Keywords: exchange bias; iron oxide nanoparticles; nanoparticle self
F20 S-Twin instrument, atomic force and magneticforcemicroscopy (AFM, MFM) with an NT-MDT low temperature HV-Solver system. For cross sectional investigations of the composite film, TEM foils were extracted perpendicularly to the sample surface, by means of focused ion-beam technique, for which the
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Figure 1:
AFM (a) and SEM (b) images showing the self-assembly of the NPs in a close-packed hexagonal structu...