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Publication Citation: Reversal mechanisms in perpendicular magnetic nanostructures

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Author(s): Justin M. Shaw; Stephen E. Russek; Michael J. Donahue; Thomas Thomson; Bruce Terris; Michael Schneider; Miles Olsen;
Title: Reversal mechanisms in perpendicular magnetic nanostructures
Published: July 16, 2008
Abstract: We find that the reversal mechanism in magnetic nanostructures is highly dependent on the nature and condition of the edges. Temperature and size dependent reversal properties of fabricated perpendicularly magnetized nanostructures down to 25 nm in diameter with two distinct edge conditions were experimentally studied and modeled. We find that the reversal mechanism can be either a Stoner-Wohlfarth (S-W) center nucleation process or an edge nucleation process that does not strictly conform to the S-W model. Micromagnetic simulations reproduce the observed change in reversal mechanism.
Citation: Physical Review B (Condensed Matter and Materials Physics)
Volume: 78
Pages: pp. 024414-1 - 024414-5
Keywords: bit patterned media;Magnetic nanostructures;magnetic reversal;nanodots
Research Areas: Data and Informatics
PDF version: PDF Document Click here to retrieve PDF version of paper (293KB)