Tuning the exchange bias training effect in top- and bottom-pinning FeNi/FeMn bilayers

A magnetic field of 600 Oe, different from the original pinning direction (PD), is applied in the film plane to tune the exchange bias (EB) training effect in both top‐ and bottom‐pinning FeNi/FeMn bilayers. Compared to the top‐pinning structures, the training effects in the bottom‐pinning ones are...

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Veröffentlicht in:Physica status solidi. A, Applications and materials science Applications and materials science, 2011-10, Vol.208 (10), p.2369-2372
Hauptverfasser: Yang, M., Ge, J. J., Xue, X. B., Yang, Y., Rui, W. B., You, B., Sun, L., Du, J., Hu, A.
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container_end_page 2372
container_issue 10
container_start_page 2369
container_title Physica status solidi. A, Applications and materials science
container_volume 208
creator Yang, M.
Ge, J. J.
Xue, X. B.
Yang, Y.
Rui, W. B.
You, B.
Sun, L.
Du, J.
Hu, A.
description A magnetic field of 600 Oe, different from the original pinning direction (PD), is applied in the film plane to tune the exchange bias (EB) training effect in both top‐ and bottom‐pinning FeNi/FeMn bilayers. Compared to the top‐pinning structures, the training effects in the bottom‐pinning ones are more easily tuned, characterized by larger rotation of the PD just after the field tuning. The EB tuning effect is thought to be originated from spin frustration near the FM/AF interface, and the interfacial AF spins are less stable and readily to be tuned by external field in the bottom‐pinning bilayers than those in the top‐pinning bilayers. This statement can also be validated by the azimuthal dependence of the EB effect.
doi_str_mv 10.1002/pssa.201084190
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subjects azimuthal dependence
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
exchange bias
Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Physics
spin frustration
training effect
title Tuning the exchange bias training effect in top- and bottom-pinning FeNi/FeMn bilayers
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