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自1988年Baibich等人在Fe/Cr多层膜中发现巨磁电阻(GMR)效应以来,人们对各种磁/非磁金属多层膜做了大量的研究.Fe/Cr,Co/Cu和Fe/Cu是最为人们熟悉的存在GMR效应的多层膜系统.金属多层膜中出现GMR效应的必要条件之一是相邻磁性层之间必须存在反铁磁耦合.最初人们对Fe/Ag多层膜的研究没有观察到反铁磁耦合.然而,Bruno等人对磁性过渡族金属/贵金属多层膜的理论计算表明,其中存在铁磁-反铁磁层间耦合振
Much research has been conducted on various magnetic / non-magnetic metal multilayer films since Baibich et al. Discovered the giant magnetoresistance (GMR) effect in Fe / Cr multilayer films in 1988. Fe / Cr, Co / Cu and Fe / Cu is the most familiar multi-layer system with GMR effect.One of the necessary conditions for the GMR effect in a metal multilayer is that there must be an anti-ferromagnetic coupling between adjacent magnetic layers. Initially, Fe / Ag However, Bruno et al.’s theoretical calculations of magnetic transition metal / noble metal multilayer films show that there exists a ferromagnetic-antiferromagnetic interlayer coupling vibration