| 摘要 |
<p>An overwrite-capable magnetooptical recording medium is provided with high density recording and reproduction capabilities. Also provided is a high density reproduction method for use with such a recording medium. The magnetooptical recording medium includes at least three magnetic layers, wherein the first magnetic layer has an easily magnetized axis within the plane of the substrate and has a perpendicular magnetic anisotropy at temperatures above room temperature but below the Curie point of the second magnetic layer. The second magnetic layer has a perpendicular magnetic anisotropy at temperatures less than the Curie point, and the third magnetic layer has a perpendicular magnetic anisotropy from room temperature to nearly the Curie point. Each of the three layers of the recording medium satisfy the conditions TC1 > TC2 and TC2 < TC3 as well as the relationship <MATH> at room temperature. <IMAGE></p> |
