发明名称 Magnetooptical recording medium.
摘要 This invention relates to a magnetooptical recording medium that is capable of direct overwriting by light intensity modulation without using a separate source for generating an external magnetic field and that has four magnetic layers superposed on a substrate, wherein said magnetic layers has vertical magnetic anisotropy and any two adjacent layers being bound by exchange force. The medium is characterized in that a fifth magnetic layer not bound by exchange force is provided over the fourth magnetic layer or that a layer made of a rare earth element/transition metal alloy in which the magnetization of rare earth elements is dominant is provided between the first and second magnetic layers which are bound together by exchange force.
申请公布号 EP0487847(A1) 申请公布日期 1992.06.03
申请号 EP19910115375 申请日期 1991.09.11
申请人 MITSUBISHI DENKI KABUSHIKI KAISHA 发明人 FUKAMI, TATSUYA, ZAIRO KENKYUSHO;TSUTSUMI, KAZUHIKO, ZAIRO KENKYUSHO;TOKUNAGA, TAKASHI, ZAIRO KENKYUSHO;NAKAKI, YOSHIYUKI, ZAIRO KENKYUSHO
分类号 G11B11/105 主分类号 G11B11/105
代理机构 代理人
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