| 摘要 |
PURPOSE:To obtain a photomagnetic recording element having extremely high density, recordability of a large capacity and high reliability by specifying the relation between the magnitude of magnetization and coercive force. CONSTITUTION:The magnetization Ms and coercive force Hc near the compensating compsn. of a DyFeCo alloy as compared with DyFeCo is such that HC is smaller if Ms is made the same and Ms is smaller when Hc is made the same. The magnitude Ms of the magnetization and the coercive force Hc is the factor to determine the min. bit diameter (d) existing stably in the stage of recording. The values of Ms and Hc are required to exhibit large values to obtain the recording element having a large capacity from the above- mentioned relation. More specifically, the magnetized film consists of the DyFeCo magnetic alloy and the magnitude Ms of magnetization and the coercive force Hc satisfy the equations.
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