文章基本信息

标题：Interfacial exchange coupling and magnetization reversal in perpendicular [Co/Ni]_N/TbCo composite structures
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作者：M. H. Tang ; Zongzhi Zhang ; S. Y. Tian 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep10863
出版社：Springer Nature
摘要：Interfacial exchange coupling and magnetization reversal characteristics in the perpendicular heterostructures consisting of an amorphous ferrimagnetic (FI) Tb_xCo_{100– x} alloy layer exchange-coupled with a ferromagnetic (FM) [Co/Ni]_N multilayer have been investigated. As compared with pure Tb_xCo_{100– x} alloy, the magnetization compensation composition of the heterostructures shift to a higher Tb content, implying Co/Ni also serves to compensate the Tb moment in TbCo layer. The net magnetization switching field H _c⊥ and interlayer interfacial coupling field H _ex, are not only sensitive to the magnetization and thickness of the switched Tb_xCo_{100– x} or [Co/Ni]_N layer, but also to the perpendicular magnetic anisotropy strength of the pinning layer. By tuning the layer structure we achieve simultaneously both large H _c⊥ = 1.31 T and H _ex = 2.19 T. These results, in addition to the fundamental interest, are important to understanding of the interfacial coupling interaction in the FM/FI heterostructures, which could offer the guiding of potential applications in heat-assisted magnetic recording or all-optical switching recording technique.