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Title: Size-dependent scaling of perpendicular exchange bias in magnetic nanostructures
Sponsor: Science Foundation Ireland
Irish Research Council for Science Engineering and Technology
Author's Homepage:
Keywords: Physics
Issue Date: 2007
Publisher: American Physical Society
Citation: G Malinowski, M. Albrecht, I. L. Guhr, J. M. D. Coey and S. van Dijken 'Size-dependent scaling of perpendicular exchange bias in magnetic nanostructures' in Physical Review B - Condensed Matter and Materials Physics, 75, (4), 2007, 012423
Series/Report no.: Physical Review B - Condensed Matter and Materials Physics
Abstract: Size-dependent scaling is studied in exchange biased nanostructures obtained by depositing Pt/Co 3 /IrMn multilayers with perpendicular magnetization onto an array of monodisperse polystyrene nanospheres with a diameter ranging from 58 nm to 320 nm. We find that the exchange bias field increases with the inverse of the sphere diameter when the IrMn layer is single domain. This scaling behavior, which is favorable for further miniaturization of magnetic devices, can be understood within the context of a random field model by a statistical distribution of Mn spins at the Co/IrMn interface.
Description: PUBLISHED
Appears in Collections:Physics (Scholarly Publications)

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