Magnetic stripes and holes: Complex domain patterns in perforated films with weak perpendicular anisotropy

Hexagonal antidot arrays have been patterned on weak perpendicular magnetic anisotropy NdCo films by e-beam lithography and lift off. Domain structure has been characterized by Magnetic Force Microscopy at remanence. On a local length scale, of the order of stripe pattern period, domain configuratio...

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Bibliographic Details
Published in:AIP advances 2017-05, Vol.7 (5), p.056303-056303-4
Main Authors: Valdés-Bango, F., Vélez, M., Alvarez-Prado, L. M., Alameda, J. M., Martín, J. I.
Format: Article
Language:English
Subjects:
Arrays
Edge effect
Electron beams
Magnetic anisotropy
Magnetic domains
Magnetic fields
Remanence
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Summary:Hexagonal antidot arrays have been patterned on weak perpendicular magnetic anisotropy NdCo films by e-beam lithography and lift off. Domain structure has been characterized by Magnetic Force Microscopy at remanence. On a local length scale, of the order of stripe pattern period, domain configuration is controlled by edge effects within the stripe pattern: stripe domains meet the hole boundary at either perpendicular or parallel orientation. On a longer length scale, in-plane magnetostatic effects dominate the system: clear superdomains are observed in the patterned film with average in-plane magnetization along the easy directions of the antidot array, correlated over several antidot array cells.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4973284