发明名称 |
Magneto-optical recording medium |
摘要 |
A magneto-optical recording medium includes a readout layer having in-plane magnetization at room temperature and in which a transition occurs from in-plane magnetization to a perpendicular magnetization when temperature rises, and a recording layer for storing information thereon magneto-optically. In the readout layer made of GdFeCo by adding Nd thereto, an amount of Nd to be added changes in a direction perpendicular to its film surface, and an amount of Nd is larger on a light incidence side than on the other side. As a result, even when a laser with a short wavelength is used, high density recording can be achieved as undesirable recording and reproducing operations due to a change in a magnetic interaction is prevented and also deterioration in quality of a reproducing signal is prevented.
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申请公布号 |
US5824426(A) |
申请公布日期 |
1998.10.20 |
申请号 |
US19950535967 |
申请日期 |
1995.09.28 |
申请人 |
SHARP KABUSHIKI KAISGA |
发明人 |
IKETANI, NAOYASU;MURAKAMI, YOSHITERU;TAKAHASHI, AKIRA;OHTA, KENJI |
分类号 |
C23C14/18;C23C14/34;G11B7/26;G11B11/105;(IPC1-7):G11B5/716;G11B11/00;G11B5/66 |
主分类号 |
C23C14/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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