Research Papers in Physics and Astronomy

 

Date of this Version

6-26-2017

Document Type

Article

Citation

APPLIED PHYSICS LETTERS 110, 262406 (2017)

http://dx.doi.org/10.1063/1.4990990

Comments

Published by AIP Publishing. Used b y permission.

Abstract

We report a magnetic X-ray microscopy study of the pattern formation of circulation in arrays of magnetic vortices ordered in a hexagonal and a honeycomb lattice. In the honeycomb lattice, we observe at remanence an ordered phase of alternating circulations, whereas in the hexagonal lattice, small regions of alternating lines form. A variation in the edge-to-edge distance shows that the size of those regions scales with the magnetostatic interaction. Micromagnetic simulations reveal that the patterns result from the formation of flux closure states during the nucleation process.

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