Magnetic antidot to dot crossover in Co and Py nanopatterned thin films
Resumen: The crossover from antidot to dot magnetic behavior on arrays patterned in a ferromagnetic thin film has been achieved by modifying only the geometry. A series of antidot arrays has been fabricated on cobalt with fixed diameter d and by reducing the period of the array p from p»d to p<d. A dramatic change in the coercivity dependence with p, correlated with a significant modification in the magnetic domain structure observed by x-ray photoemission electron microscopy, evidences the crossover. An intermediate regime has been found between the superdomain structure present in antidot arrays and the array of astroid-state noncorrelated dots. The study has been reproduced for a different ferromagnetic material, permalloy, and supported by micromagnetic simulations.
Idioma: Inglés
DOI: 10.1103/PhysRevB.89.144405
Año: 2014
Publicado en: Physical Review B. Condensed matter and materials physics 89, 14 (2014), 144405 [10 pp]
ISSN: 1098-0121

Factor impacto JCR: 3.736 (2014)
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 14 / 66 = 0.212 (2014) - Q1 - T1
Factor impacto SCIMAGO:

Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2010-20979-C02-02
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-23791
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2012-36844
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2012-38318-C03-03
Tipo y forma: Article (Published version)
Área (Departamento): Física de la Materia Condensada (Departamento de Física de la Materia Condensada)

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