Kondorski reversal in magnetic nanowires

Ralph Skomski, Eva Schubert, Axel Enders, D. J. Sellmyer

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Abstract

Magnetization reversal in nanowire systems, such as alnico-type permanent magnets, slanted columns produced by glancing-angle deposition, and nanowires embedded in alumina templates, is investigated by model calculations. The angular dependence of the domain-wall propagation is Kondorski-like, reminiscent of Kondorski pinning in bulk materials but with a somewhat different physics and consistent with Kerr hysteresis-loop measurements. Criss-cross patterning of alnicos improves the coercivity but reduces the remanence, with virtually zero net effect on energy product. Finally, we briefly discuss the wire-radius dependence of the coercivity in the context of "shape anisotropy" and the occurrence of interaction domains in alnico.

Original languageEnglish (US)
Article number17D137
JournalJournal of Applied Physics
Volume115
Issue number17
DOIs
Publication statusPublished - May 7 2014

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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