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ARTICLE scitation.org/journal/adv Strong long-range perpendicular exchange bias across a spacer layer ABSTRACT The perpendicular magnetic anisotropy (PMA) and perpendicular exchange bias (PEB) have been investigated in a CoPt/spacer/FeMn heterostructure by inserting Ta and Pt as spacer layers, respectively. First, we show that strong PMA can be obtained in (111)-oriented A1-CoPt single layer and CoPt/FeMn bilayer films on MgO (111) substrates. Then we demonstrate that the Ta and Pt spacerdoi:10.1063/1.5128308 fatcat:hrok2lspxndyrha4a6fk3ihmia