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Layer resolved magnetization reversal study in SmCo5/Fe nanocomposite bilayers |
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| Authors: | F. Shahza S.A. Siddiqi M.Y.Im A. Avallone P. Fischer Z. Hussain I. Siddiqi F.Hellman |
| Affiliation: | [1]Centre for Solid State Physics, University of the Punjab, Lahore-54590, Pakistan [2]Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA [3]Advanced Light Source, Berkeley Laboratory, University of California, Berkeley, CA-94720, USA [4]Department of Physics, University of California, Berkeley, California-94720, USA |
| Abstract: | A hard/soft SmCo5/ Fe nanocomposite magnetic bilayersystem is fabricated on x-ray transparent 100--200~nm thinSi3N4 films by magnetron sputtering. The microscopicmagnetic domain pattern and its behaviours during magnetizationreversal in the hard and the soft magnetic phases are studiedseparately by element specific magnetic soft x-ray microscopy at aspatial resolution of better than 25~nm. We observe that the domainpatterns for the soft and hard phases show coherentbehaviours in varying magnetic fields. We derive local M(H) curvesfrom the images of Fe and SmCo5 separately and find theswitches for hard and soft phases to be the same. |
| Keywords: | multilayers x-ray microscopes magnetic properties ofnanostructures |
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