| 摘要 |
A magnetic thin film of the present invention comprises: a substrate; and a ferromagnetic film being formed on the substrate and having an average diameter of 0.1 to 10 mum, a thickness of 0.005 to 1.5 mum and a ratio of the thickness to the average diameter of not more than 0.5:1, wherein the ferromagnetic film having at a center portion thereof a perpendicular magnetization component, which is oriented or magnetized in the up or down direction perpendicular to the surface of the magnetic thin film.
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