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Oscillatory thickness dependence of the coercive field in magnetic three-dimensional antidot arrays

By A.A. Zhukov, A.V. Goncharov, P.A.J. de Groot, M.A. Ghanem, P.N. Bartlett, R. Boardman, H. Fangohr, V. Novosad and G. Karapetrov

Abstract

Recent developments in magnetic applications, such as data storage, sensors, and transducers, are stimulating intense research into magnetism on submicrometer-length scales. Emerging self-assembly fabrication techniques have been proposed as viable, low-cost methods to prepare such submicron structures. In this letter we present studies on magnetic nanostructures with 3D architectures, fabricated using a self-assembly template method. We find that the patterning transverse to the film plane, which is a unique feature of this method, governs the magnetic behavior. In particular, the coercive field, a key parameter for magnetic materials, was found to demonstrate an oscillatory dependence on film thicknes

Topics: QC
Year: 2006
OAI identifier: oai:eprints.soton.ac.uk:37659
Provided by: e-Prints Soton

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