Magnetization Reversal Behaviour of Planar Nanowire Arrays of Fe
S. K. Arora,
B. J. O’Dowd,
N. B. Brookes,
I. V. Shvets.
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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