Reversing the training effect in exchange biased CoO/Co bilayers.

Domain state model for exchange bias . II . Experiments

The exchange bias coupling at ferro-/antiferromagnetic interfaces of epitaxially grown Co/CoO bilayers can be intentionally enhanced and controlled by diluting the antiferromagnetic CoO layer, i.e., by introducing ~i! nonmagnetic substitutions (Co12xMgxO) or ~ii! Co deficiencie (Co12yO). All intentional nonmagnetic cations or defects were placed away from the interface throughout the whole volu...

Temperature dependence of the training effect in electrodeposited Co/CoO nanotubes

High aspect ratio Co/CoO nanotubes (NTs) were obtained by potentiostatic electrodeposition of Co inside nanoporous alumina templates followed by the natural oxidation of their inner walls. Magnetic measurements performed at low temperatures after field cooling the samples from above its blocking temperature (TB 220 K), evidenced the existence of exchange bias (EB) coupling between the Co ferrom...

Coercivity enhancement in exchange biased CoO/Co3Pt bilayers

Hard x-ray resonant scattering study of Ni81Fe19(111)/CoO(111) exchange biased bilayer

We have employed hard x-ray resonant magnetic scattering to study the bulk antiferromagnetic domain state of the archetypal epitaxial Ni81Fe19(111)/CoO(111) exchange biased bilayer (Ni81Fe19 = Permalloy = Py). Tuning the x-ray energy to the Co K-edge, we were able to detect the ( 1 2 1

Temperature dependence of the training effect in a Co/CoO exchange-bias layer