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We investigate a possible correlation between spin orbit torque (SOT) andexchange-bias (EB) in IrMn-layer/ferromagnetic-ribbon heterostructure byperforming magnetoimpedance (MI) measurements. To uncover this correlation, webenefit from EB training effect probed by MI effect at room temperature. Adamping-like SOT driven by ac current through the antiferromagnetic IrMnapplies to the ferromagnetic ribbon layer, determined by MI magnetic field andfrequency sweeps. Importantly, magnitude of the SOT is observed to remainintact against EB training and decrease of EB through alternative magneticfield sweep cycles. Our results pave the way to better elucidate the EB effect,EB training and the SOT, useful for future spintronic elements.

Coexistence of exchange bias training effect and spin-orbit torque in IrMn-layer/ferromagnetic-ribbon heterostructures via magnetoimpedance effect