发明名称 |
Magneto-optical memory element |
摘要 |
A magneto-optical memory element has a multi-layer construction in the order from a side first receiving light from a light-source which includes a first transparent dielectric film, a rare earth transition metal alloy film, a second transparent dielectric film and a reflective film. The magneto-optical device uses circular dichroism effect of a magnetic mater for reading information. The rare earth transition metal alloy film has a refractive index represented by n+/- DELTA n wherein n=3.2-3.55i and DELTA n=0.05-0.03i. The thickness of film is about 18 to 46 nm. The second transparent dielectric film has a refractive index of 2.0+/-0.2 and a film thickness of 80 to 108 nm.
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申请公布号 |
USRE35629(E) |
申请公布日期 |
1997.10.14 |
申请号 |
US19930136019 |
申请日期 |
1993.10.14 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
MURAKAMI, YOSHITERU;TAKAHASHI, AKIRA;VAN, KAZUO;NAKAYAMA, JUNICHIRO;KATAYAMA, HIROYUKI;OHTA, KENJI |
分类号 |
G11B11/10;G11B11/105;(IPC1-7):G11B7/24 |
主分类号 |
G11B11/10 |
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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