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Coercivity dependence on periodicity of Co and Py antidot arrays

AuthorsCastán-Guerrero, C.; Bartolomé, Juan; Bartolomé, Fernando; García, L. M.; Sesé Monclús, Javier ; Strichovanec, Pavel; Herrero-Albillos, Julia; Merazzo, K. J. ; Vázquez Villalabeitia, Manuel ; Vavassori, Paolo
Issue Date2013
CitationJournal of the Korean Physical Society 62(10): 1521-1524 (2013)
AbstractAn experimental study on the control of thin films magnetic coercivity through the change in geometry of antidot arrays has been performed on two different materials: cobalt and permalloy. Antidot arrays have been fabricated using a Focused Ion Beam, and magnetic hysteresis loops have been measured using Kerr effect microscopy. The coercivity dependence on the material and the array periodicity have been studied. A novel method to estimate the antidot diameter from MOKE data is presented. Results suggest a widening of the antidot effective diameter compared to the one measured from SEM images. This could be attributed to a damage of the magnetic material around the holes during the fabrication process, which leads to amorphization and concomitant reduction of the surrounding film magnetization.
Identifiersdoi: 10.3938/jkps.62.1521
issn: 0374-4884
e-issn: 1976-8524
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