| 摘要 |
PURPOSE:To obtain a high reproducing output by forming the lower layer obtained by incorporating a specified amt. of other elements into cobalt and chromium on a base and forming the upper layer obtained by incorporating the smaller amt. of the same elements into cobalt and chromium on the lower layer to constitute the titled vertical magnetic recording medium having an in-plane M-H hysteresis characteristic shown by a curve having a steep rise in the vicinity of the origin. CONSTITUTION:The lower layer obtained by incorporating a specified amt. of other elements into cobalt and chromium is formed on a base and the upper layer obtained by incorporating the smaller amt. of the same elements into cobalt and chromium is formed on the lower layer. Consequently, the obtained vertical magnetic recording medium is provided with an in-plane M-H hysteresis characteristic shown by a curve having a steep rise in the vicinity of the origin. Accordingly, the magnetic flux emitted from a magnetic head is passed through the upper layer having high coercive force and absorbed rapidly and sharply by the magnetic pole of the magnetic head, strong residual magnetization is generated in the upper layer and hence a high reproducing output can be realized.
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