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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/40212

Title: Magnetic Properties of Exchange-Biased [Co/Pt](n) Multilayer With Perpendicular Magnetic Anisotropy
Author: FENG, JIA-FENG
COEY, JOHN MICHAEL DAVID
DIAO, ZHU
Sponsor: Science Foundation Ireland
Author's Homepage: http://people.tcd.ie/jcoey
http://people.tcd.ie/jfeng
http://people.tcd.ie/diaoz
Keywords: MAGNETICS
INTERFACE ROUGHNESS
Issue Date: 2010
Citation: Chen, Jun-Yang; Feng, Jia-Feng; Diao, Zhu; Feng, Gen; Coey, J. M. D.; Han, Xiu-Feng, Magnetic Properties of Exchange-Biased [Co/Pt](n) Multilayer With Perpendicular Magnetic Anisotropy, IEEE Transactions on Magnetics, 46, 6, 2010, 1401-1404
Series/Report no.: IEEE Transactions on Magnetics
46
6
Abstract: Perpendicular exchange-biased [Co/Pt](3)/Co(t(Co))/IrMn and IrMn/Co(t(Co))/Pt/[Co/Pt](3) multilayers have been fabricated, changing the thickness (t(Co)) of the cobalt that is next to the IrMn layer. The crystal structure, interface roughness and magnetic properties were characterized by X-ray diffraction (XRD), X-ray reflectivity (XRR), atomic force microscopy (AFM) and extraordinary Hall Effect (EHE). The multilayers are flat, and the roughness is about 0.2 nm across the 2-mu m scanning range. The magnetization reversal is dependent on t(Co), and the exchange bias and coercivity vary with t(Co). The exchange bias reaches a maximum value (about 13.9 mT) for top-pinned multilayers at t(Co) = 0.45 nm, while it reaches a maximum (about 3.5 mT) for bottom-pinned multilayers at t(Co) = 0.6 nm. For both stacks the coercivity is maximum (about 30 mT) at t(Co) = 0.8 nm, and stable for t(Co) > 1.0 nm. These results are well understood in terms of the Co spin orientation at the Co/ IrMn interface.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/40212
Related links: http://dx.doi.org/10.1109/TMAG.2010.2041192
Appears in Collections:Physics (Scholarly Publications)

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