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FORC studies of exchange biased NiFe in L1_0(111) FePt-based spin valve

Journal article
Authors Y.-Y. Fang
C.-L. Zha
Stefano Bonetti
Johan Åkerman
Published in Journal of Physics Conference Series
Volume 200
Issue 7
Pages 072002 (4 pages)
ISSN 1742-6588
Publication year 2010
Published at Department of Physics (GU)
Pages 072002 (4 pages)
Language en
Links dx.doi.org/10.1088/1742-6596/200/7/...
Keywords magnetism
Subject categories Magnetism

Abstract

We use First-Order Reversal Curves (FORC) to study the switching distribution and exchange bias in L10 (111) FePt-based spin valves with a layer structure of Ta (6)/Pt (3)/L10 (111) Fe53Pt47 (20)/Co50Fe50 (1.5)/Cu (4.5)/Co50Fe50 (2)/Ni80Fe20 (3) (in nm). We find that the switching of the free layer magnetization is strongly influence by the magnetic state of the FePt/CoFe fixed layer, as evidenced by tunable coercivity and exchange bias fields.

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