Invention Grant
- Patent Title: Magneto-optical recording medium and reproduction method therefor
- Patent Title (中): 磁光记录介质及其再现方法
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Application No.: US141305Application Date: 1998-08-27
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Publication No.: US6122228APublication Date: 2000-09-19
- Inventor: Katsusuke Shimazaki , Yoshitane Tsuburaya , Norio Ohta , Hitoshi Watanabe , Hiroki Takao
- Applicant: Katsusuke Shimazaki , Yoshitane Tsuburaya , Norio Ohta , Hitoshi Watanabe , Hiroki Takao
- Applicant Address: JPX Osaka
- Assignee: Hitachi Maxwell, Ltd.
- Current Assignee: Hitachi Maxwell, Ltd.
- Current Assignee Address: JPX Osaka
- Priority: JPX9-244845 19970827
- Main IPC: G11B11/105
- IPC: G11B11/105 ; G11B13/04 ; G11B11/00
Abstract:
A magneto-optical recording medium comprises, on a substrate, a dielectric layer, a GdFeCo reproducing layer, a non-magnetic layer, and a TbFeCo recording layer. Upon reproduction, a DC magnetic field Hex is applied in the recording direction, and a reproducing light beam is radiated while being modulated to have a low power and a high power in synchronization with a reproducing clock. The reproducing layer is a magnetic film which changes from in-plane magnetization into perpendicular magnetization at a critical temperature Tcr, which has a compensation temperature Tcomp between room temperature and a Curie temperature Tc, and which satisfies Troom
Public/Granted literature
- US4278554A Antioxidant Public/Granted day:1981-07-14
Information query
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