Issue |
EPL
Volume 100, Number 1, October 2012
|
|
---|---|---|
Article Number | 17007 | |
Number of page(s) | 4 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/100/17007 | |
Published online | 16 October 2012 |
Micromagnetism of dense permalloy antidot lattices from anodic alumina templates
1 Faculty of Physics and Applied Computer Science, AGH University of Science and Technology al. Mickiewicza 30, PL-30059 Cracow, Poland, EU
2 Instituto de Ciencia de Materiales de Madrid - CSIC. 28049 Madrid, Spain, EU
(a) gawron@newton.ftj.agh.edu.pl
Received: 27 April 2012
Accepted: 7 September 2012
Hexagonally ordered Py antidot arrays were prepared by sputtering onto anodic alumina membrane templates, with varying antidot diameter and lattice constant parameter. Experimental magnetic characterization together with micromagnetic simulations was performed to unveil the coercivity mechanism. Experimental measurements show that coercivity monotonically increases with the antidot diameter in reasonable agreement with simulations. This is understood considering the presence of geometrical micrometric domains with perfect hexagonal order. Contrarily, simulations for a single crystal sample predict that the coercivity should decrease with the antidots diameter.
PACS: 75.78.Cd – Micromagnetic simulations / 75.60.Jk – Magnetization reversal mechanisms / 75.70.Ak – Magnetic properties of monolayers and thin films
© EPLA, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.