Abstract
A systematic investigation of parallel and perpendicular exchange biases in [FePt∕FeMn]10 multilayers deposited onto MgO(100) substrates by ion beam sputter-deposition system is performed. The thickness (FeMn) dependences of exchange bias field and blocking temperature are discussed. The blocking temperature increases with the increase of FeMn thickness and becomes nearly constant as the FeMn thickness is beyond a critical value. Of interest is the blocking temperature of the parallel exchange bias which is higher than that of the perpendicular one. Also, the angular dependence of parallel and perpendicular exchange biases is investigated.
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