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The perpendicular exchange bias field, HEB, of the magnetoelectric heterostructure Cr₂O₃(111)/(Co/Pt)₃ changes sign after field cooling to below the N\'eel temperature of Cr₂O₃ in either parallel or antiparallel axial magnetic and electric freezing fields. The switching of HEB is explained by magnetoelectrically induced antiferromagnetic single domains which extend to the interface, where the direction of their end spins controls the sign of HEB. Novel applications in magnetoelectronic devices seem possible.
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Borisov et al. (2005) studied this question.
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