To achieve the above and other objectives, the present invention provides a ferromagnetic/ antiferromagnetic coupling film structure inclding: a substrate; an antiferromagnetic layer of cobalt oxide having a thickness of 2 to 15 monolayers and formed on the substrate at a temperature ranging from {HEAD ~ 700K} to 900K; and {TAIL ~ a ferromagnetic layer} of cobalt having a thickness of at least one monolayer formed on the antiferromagnetic layer of cobalt oxide 
To achieve the above and other objectives , the present invention provides a ferromagnetic/ antiferromagnetic coupling film structure inclding : a substrate ; an antiferromagnetic layer of cobalt oxide having a thickness of 2 to 15 monolayers and formed on the substrate at a temperature ranging from { HEAD ~ 700 K } to 900 K ; and { TAIL ~ a ferromagnetic layer } of cobalt having a thickness of at least one monolayer formed on the antiferromagnetic layer of cobalt oxide
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