IrMn as exchange-biasing material in systems with perpendicular magnetic anisotropy
Citation:S. van Dijken, M. Besnier, J. Moritz J, and J.M.D. Coey, IrMn as exchange-biasing material in systems with perpendicular magnetic anisotropy, Journal of Applied Physics, 97, 10, 2005, 10K114
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Contact between a Co/Pt multilayer and an IrMn film leads to perpendicular exchange bias. The exchange bias field does not depend on the degree of (111) film texture and for Co/Pt multilayers with IrMn at the bottom it can be enhanced by magnetic field annealing. The perpendicular exchange bias of the Co/Pt?IrMn system is limited by a misalignment between the Co spins and the film normal, which is due to a negative magnetic anisotropy contribution from the Co/IrMn interface (KSCo/IrMn = ?0.09?mJ/m2). The insertion of a 3?? thick Pt layer at the Co/IrMn interface maximizes the perpendicular exchange-bias field.
Science Foundation Ireland
Publisher:American Institute of Physics
Series/Report no:Journal of Applied Physics
Availability:Full text available