Magnetic properties of planar nanowire arrays of Co fabricated on oxidized step-bunched silicon templates

S. K. Arora, B. J. Odowd, B. Ballesteros, P. Gambardella, I. V. Shvets

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)

Abstract

Planar nanowire (NW) arrays of Co grown on oxidized step-bunched Si(111) templates exhibit room temperature ferromagnetic behaviour for wire widths down to 25nm. Temperature and thickness dependent magnetization studies on these polycrystalline NW arrays show that the magnetic anisotropy of the NW array is dominated by shape anisotropy, which keeps the magnetization in-plane with easy axis parallel to the wires. This shape related uniaxial anisotropy is preserved even at low temperatures (10K). Thickness dependent studies reveal that the magnetization reversal is governed by the curling mode reversal for thick wires whereas thinner wires exhibit a more complex behaviour which is related to thermal effects and size distribution of the crystal grains that constitute the NWs. © 2012 IOP Publishing Ltd.
Original languageEnglish
Article number235702
JournalNanotechnology
Volume23
Issue number23
DOIs
Publication statusPublished - 15 Jun 2012

Fingerprint Dive into the research topics of 'Magnetic properties of planar nanowire arrays of Co fabricated on oxidized step-bunched silicon templates'. Together they form a unique fingerprint.

Cite this