| 摘要 |
PURPOSE:To permit easy production and to substantially eliminate the demagnetization by pressurizing and heating by depositing a thin alloy magnetic material film consisting of Fe-M (M=any of Be, Sc, Ti, Zr, Ru, Re, Os) having vertical magnetic anisotropy on a substrate. CONSTITUTION:The vertical magnetic recording medium for which a vertically magnetized film consisting of Fe as a base is formed in place of Co having the possibility of the demagnetization by heating or pressurizing. The content of alloying elements is required to be >=15atomic% <=45atomic% and the satd. magnetic flux density (4piMs) of the thin Fe-M film is required to be >=1,500G <=8,000G as the conditions required for the thin film consisting of Fe-M (M=any of Be, Sc, Ti, Zr, Ru, Re, Os) to be used to constitute the vertically magnetized film which can be used in practicability. Different elements such as Cr may be incorporated into the thin Fe-M in order to improve the corrosion resistance thereof and to limit the satd. magnetic flux density.
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