| 摘要 |
PURPOSE:To prevent a case that the magnetization of the magnetic layer of an opposite side is easy to be inverted from being generated due to an excessive interchangeable coupling force in case of using an over-writable medium by attaching a non-magnetic element in the magnetic layer of a multiple layer magneto-optical recording medium, and controlling the interchangeable coupling force at a prescribed value corresponding to a quantity to be attached. CONSTITUTION:In the multiple layer magneto-optical recording medium, the non-magnetic element is attached on either or both adjacent two magnetic layers 1 and 2. As the non-magnetic element, for example, an Si or a Ge, etc., is used. The interchangeable coupling force is controlled by extending a distance between magnetic atoms between layers substantially by attaching the non- magnetic element in the magnetic layers 1 and 2 and decreasing an interchangeable mutual function by decreasing the number of magnetic atoms most adjacent to each other. In such a way, it is possible to prevent the excessive interchangeable coupling force from being generated between the magnetic layers 1 and 2 in the overwritable magneto-optical recording medium. |
