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Current Nanoscience

Editor-in-Chief

ISSN (Print): 1573-4137
ISSN (Online): 1875-6786

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 and I. V. Shvets

Volume 9, Issue 5, 2013

Page: [609 - 614] Pages: 6

DOI: 10.2174/15734137113099990069

Price: $65

Abstract

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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