Magnetization Reversal Behaviour of Planar Nanowire Arrays of Fe

Author(s): S. K. Arora, B. J. O’Dowd, P. Thakur, N. B. Brookes, B. Ballesteros, P. Gambardella, I. V. Shvets.

Journal Name: Current Nanoscience

Volume 9 , Issue 5 , 2013

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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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Article Details

Year: 2013
Page: [609 - 614]
Pages: 6
DOI: 10.2174/15734137113099990069
Price: $65

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