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Domain wall creep in a 2D magnetic wire in the presence of antiferromagnetic coupling

AuthorsMenéndez, José Luis ; Chappert, C.; Ravelosona, D.
Issue Date2013
PublisherInstitute of Physics Publishing
CitationJournal of Physics D: Applied Physics 46(23): 235001 (2013)
AbstractWe have studied the dynamics of propagation in one dimension of a magnetic domain wall (DW) in the presence of an exchange bias field in nanowires patterned in two-dimensional ultra-thin perpendicularly magnetized ferromagnetic-antiferromagnetic (F-AF) films. The DW velocity v(H) is strongly reduced when the DW propagates against the exchange bias field, and its field dependence is consistent with a creep process with a critical exponent μ = 1/4. The increase in energy barrier responsible for the reduction of v(H) cannot be explained by the introduction of a macroscopic exchange bias field. Instead it arises from the AF-F interface that provides an extra-source of random pinning. © 2013 IOP Publishing Ltd.
Identifiersdoi: 10.1088/0022-3727/46/23/235001
issn: 0022-3727
e-issn: 1361-6463
Appears in Collections:(CINN) Artículos
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