Exchange anisotropy in FM/AFM bilayers has given a lot of static magnetization properties such asenhanced coercivity and magnetization loop shifts.These phenomena are primarily from the effective anisotropies intro-duced into a ferromagnet by exchange coupling with a strongly anisotropic antiferromagnet.These effective anisotropiescan also be used to explain the dynamic consequences of exchange-biased bilayers.In this article,the dynamic con-sequences such as exchange-induced susceptibility,exchange-induced permeability,and the corresponding domain wallcharacteristics in the exchange-biased structures of ferromagnet/antiferromagnet1/antiferromagnet2 are studied.Theresults show that the second antiferromagnetic layer can largely affect the dynamic consequences of exchange-blasedbilayers.Especially in the case of critical temperature,the effects become more obvious.Practically,the exchangeanisotropy of biased bilayer system can be tuned by exchange coupling with the second antiferromagnetie layer.
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