| 摘要 |
PURPOSE:To reduce the dependency of coersive force upon film thickness in the obtained magnetic plating film by incorporating the ions of Co, Mn, and Ni, a reducing agent for these metallic ions, a pH buffer and the like. CONSTITUTION:The electrolytic plating bath contains Co ions, Mn ions, Ni ions, a reducing agent for these metallic ions, a pH buffer, and a pH modifier. The magnetic plating film obtained by use of this plating bath has reduced dependency of coersive force upon film thickness and shows excellent properties as a vertical magnetization recording medium used for a high density magnetic recording body.
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