Systematic investigations of magnetization behavior performed on planar arrays of 30 nm wide Fe-nanowires (NW) fabricated
on oxidized step-bunched Si (111) templates reveal that the NW arrays exhibit an uniaxial anisotropy dominated by the shape of the
wires, that facilitates in retaining the magnetization in-plane with easy axis parallel to the wires. The NWs possess polycrystalline character
with bcc-crystal structure, and present an oxidized interface when capped with MgO. From the temperature dependent magnetization
studies we find that for thick wires (>4.5 nm) the magnetization reversal is governed by the curling reversal mode. Whereas, for thin
wires the reversal is dominated by thermal activation.
Keywords: Magnetic nanowires, magnetization reversal, magnetic anisotropy, planar nanowire array, Self-Assembly, Vicinal surfaces.
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