Cobalt (CO) and platinum (PT)-based multilayer thin film having inverted structure and method for manufacturing same
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[0029]Hereinafter, the present invention will be described in further detail.
[0030]The present invention provides a cobalt and platinum-based multilayer thin film having perpendicular magnetic anisotropy (PMA), which includes thin cobalt layers and thin platinum layers alternately deposited on a substrate, and has an inverted structure in which the thickness of the thin cobalt layers is greater than that of the thin platinum layers.
[0031]As described above, the cobalt and platinum-based multilayer thin film according to the prior art has a structure in which the thickness of a thin platinum layer that is a non-magnetic thin layer is greater than that of a thin cobalt layer that is a magnetic thin layer. It is known that PMA in this multilayer thin film according to the prior art occurs at the interface between the thin cobalt layer and the thin platinum layer. The multilayer thin film having this structure has a fatal disadvantage in that the PMA properties of the multilayer t
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