Tailoring Size Effects on the Exchange Bias in Ferromagnetic-Antiferromagnetic < 100 nm Nanostructures
Résumé
The hysteresis loop shift in sub-100 nm ferromagnetic- (FM-)antiferromagnetic (AFM) nanostructures
can be either enhanced or reduced with respect to continuous films with the same composition, with
varying the AFM layer thickness. An enhancement of the coercivity and a reduction of the blocking
temperature are also observed. These effects are mainly ascribed to the physical limitations that the dot
sizes impose on the AFM domain size and the concomitant weakening of the pinning strength exerted by
the AFM during magnetization reversal of the FM.
Domaines
Matière Condensée [cond-mat]| Origine | Fichiers éditeurs autorisés sur une archive ouverte |
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