TITLE

Tuning exchange bias in Ni/FeF2 heterostructures using antidot arrays

AUTHOR(S)
Kovylina, M.; Erekhinsky, M.; Morales, R.; Villegas, J. E.; Schuller, I. K.; Labarta, A.; Batlle, X.
PUB. DATE
October 2009
SOURCE
Applied Physics Letters;10/12/2009, Vol. 95 Issue 15, p152507
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The transition from positive to negative exchange bias can be systematically tuned with antidot arrays artificially introduced into Ni/FeF2 ferromagnetic/antiferromagnetic heterostructures. These results are a consequence of the energy balance and suggest that the nanostructure plays a key role in the formation of pinned uncompensated spin regions in the antiferromagnetic FeF2 layer. These noninterfacial magnetic moments created at the antidot faces favor the onset of positive exchange bias at lower cooling fields.
ACCESSION #
44665194

 

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