| 摘要 |
PURPOSE:To realize an amorphous vertically magnetizable film of which the characteristics are less deteriorated and which has a long life by incorporating at least one kind of Er, Ho, Nb and W at >=0.5atomic% into said film. CONSTITUTION:The thermal stability is higher ad the better result is obtd. as the crystallization temp. Tx of the amorphous alloy film is higher. The power of laser light is made lower as the Curie temp. Tc is lower. The elements, Er, Ho, Nb, W having the large difference between the crystallization temp. Tx and the Curie temp. Tc are thereupon selected and are added into the amorphous Tb-Fe-Co alloy film in a 0.5-10atomic% range. The C/N ratio of the recording surface formed in the above-mentioned manner does not change even after 10<6> times of tests as compared with 10<4> times with the conventional material and therefore the recording film of which the characteristics are less deteriorated and which has the long life is obtd.
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