Abstract：
:In this work, disordered-IrMn3/insulating-Y3Fe5O12 exchange-biased bilayers are studied. The behavior of the net magnetic moment ΔmAFM in the antiferromagnet is directly probed by anomalous and planar Hall effects, and anisotropic magnetoresistance. The ΔmAFM is proved to come from the interfacial uncompensated magnetic moment. We demonstrate that the exchange bias and rotational hysteresis loss are induced by partial rotation and irreversible switching of the ΔmAFM. In the athermal training effect, the state of the ΔmAFM cannot be recovered after one cycle of hysteresis loop. This work highlights the fundamental role of the ΔmAFM in the exchange bias and facilitates the manipulation of antiferromagnetic spintronic devices.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Zhou X,Ma L,Shi Z,Fan WJ,Evans RF,Zheng JG,Chantrell RW,Mangin S,Zhang HW,Zhou SMdoi
10.1038/srep09183subject
Has Abstractpub_date
2015-03-17 00:00:00pages
9183issn
2045-2322pii
srep09183journal_volume
5pub_type
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