| Issue |
Europhys. Lett.
Volume 68, Number 2, October 2004
|
|
|---|---|---|
| Page(s) | 233 - 239 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2003-10312-y | |
| Published online | 01 October 2004 | |
Enhanced exchange bias due to an ultra-thin, non-magnetic insulator spacer layer
Institut für Festkörperforschung - Forschungszentrum Jülich GmbH D-52425 Jülich, Germany
Corresponding author: A.Paul@fz-juelich.de
Received:
11
December
2003
Accepted:
27
August
2004
The exchange bias effect of 
bilayers is found to
significantly increase when an ultra-thin, non-magnetic
insulating 
x spacer is added at the
ferromagnet/antiferromagnet interface. The dependence on the
spacer thickness is non-monotonic with a maximum two-fold
enhancement of the exchange bias field 
at a spacer
thickness of 1.0
. These observations are explained in
terms of a discontinuous layer structure of the spacer and its
thickness evolution. There is no indication of a magnetic
interaction across the x spacer layer.
PACS: 68.65.Ac – Multilayers / 75.30.Gw – Magnetic anisotropy / 75.70.Cn – Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
© EDP Sciences, 2004
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