Tailoring the physical properties of thin nanohole arrays grown on flat anodic aluminum oxide templates

The introduction of voids in a magnetic thin-film alters the stray field distribution and enables the tailoring of the corresponding physical properties. Here we present a detailed study on thin magnetic nanohole arrays (NhAs) grown on top of hexagonally-ordered anodic aluminum oxide (AAO) substrate...

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Bibliographic Details
Published in:Nanotechnology 2012-10, Vol.23 (42), p.425701-425701
Main Authors: Leitao, D C, Ventura, J, Sousa, C T, Teixeira, J M, Sousa, J B, Jaafar, M, Asenjo, A, Vazquez, M, De Teresa, J M, Araujo, J P
Format: Article
Language:English
Subjects:
Aluminum oxide
Anodic
Arrays
Nanocomposites
Nanomaterials
Nanostructure
Physical properties
Topography
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Summary:The introduction of voids in a magnetic thin-film alters the stray field distribution and enables the tailoring of the corresponding physical properties. Here we present a detailed study on thin magnetic nanohole arrays (NhAs) grown on top of hexagonally-ordered anodic aluminum oxide (AAO) substrates. We address the effect of AAO topography on the corresponding electrical and magneto-transport properties. Optimization of the AAO topography led to NhAs with improved resistance and magnetoresistance responses, while retaining their most important feature of enhanced coercivity. This opens new pathways for the growth of more complex structures on AAO substrates, a crucial aspect for their technological viability.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/23/42/425701