| 摘要 |
PURPOSE:To obtain a magnetic recording medium having an excellent high-frequency characteristic, reproduced output, erasing characteristic and C/N by incorporating hexagonal ferrite magnetic powder into needle-like ferromagnetic powder and using such powder. CONSTITUTION:The magnetic recording medium which contains the magnetic powder having >=70emu/g satd. magnetization and the hexagonal ferrite mag netic powder having the axis of easy magnetization in the c-axis direction and having <=600 oersted coercive force, >=5 planar ratio and <=0.2mum particle size in the magnetic layer and in which the hexagonal ferrite magnetic powder consists of 5-100pts.wt. ratio by 100pts.wt. magnetic powder is formed. The vertical magnetization component of the hexagonal ferrite magnetic powder can be effectively utilized and the reproduced output in the high-frequency region is improved. The magnetic recording medium is made to deal with high- density recording and the horizontal magnetization component of the needle-like ferromagnetic powder is effectively utilized, by which the reproduced output in the low-frequency region is improved.
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