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Understanding the Magnetization Reversal in Six-Fold Anisotropic Hexagonal Networks

TitleUnderstanding the Magnetization Reversal in Six-Fold Anisotropic Hexagonal Networks
Publication TypeJournal Article
Year of Publication2012
AuthorsVenkateswarlu, D, Mohanan, PV, Joshi, RS, Kumar, PSA
JournalIEEE Transactions on Magnetics
Volume48
Pagination2793-2796
Date PublishedNov
ISSN0018-9464
KeywordsAnisotropic magnetoresistance, artificial anisotropy, Coercive force, hexagonal network, LLG-simulator, local hysteresis method, magnetic anisotropy, Magnetic domain walls, Magnetic domains, magnetic hysteresis, magnetic nanowires, magnetisation reversal, magnetization reversal, magnetization reversal and micromagnetics, micromagnetic packages, micromagnetics, nanomagnetics, nanowire hysteresis, network architectures, Nmag, OOMMF, Perpendicular magnetic anisotropy, six-fold anisotropy, spatial magnetization information
Abstract

Isolated magnetic nanowires have been studied extensively and the magnetization reversal mechanism is well understood in these systems. But when these nanowires are joined together in different architectures, they behave differently and can give novel properties. Using this approach, one can engineer the network architectures to get artificial anisotropy. Here, we report six-fold anisotropy by joining the magnetic nanowires into hexagonal network. For this study, we also benchmark the widely used micromagnetic packages: OOMMF, Nmag, and LLG-simulator. Further, we propose a local hysteresis method by post processing the spatial magnetization information. With this approach we obtained the hysteresis of nanowires to understand the six-fold anisotropy and the reversal mechanism within the hexagonal networks.

DOI10.1109/TMAG.2012.2196032