| 发明名称 |
Dünne Schicht aus einem polykristallinen Granat für magneto-optisches Aufzeichnungsmedium |
| 摘要 |
A garnet polycrystalline film for a magneto-optical recording medium including at least two layers (2-1, 2-2) of polycrystalline garnet represented by BiXR3-XMYFe5-YO12 (where 0 </= X </= 3, 0 </= Y </= 5, R represents one or more rare earth elements containing yttrium, and M represents Ga, Al or In), wherein crystal lattice constants of these adjacent two layers (2-1, 2-2) are different from each other by +/-0.3% or more, and an average crystal grain diameter of one of the layers is smaller than that of the other layer and 1 mu m or less, and a magneto-optical recording disk using this garnet polycrystalline film. <IMAGE> |
| 申请公布号 |
DE69127604(D1) |
申请公布日期 |
1997.10.16 |
| 申请号 |
DE1991627604 |
申请日期 |
1991.11.12 |
| 申请人 |
NIPPON STEEL CORP., TOKIO/TOKYO, JP;NIPPON HOSO KYOKAI, TOKIO/TOKYO, JP |
发明人 |
SHIMOKAWA, KENJI, C/O DAIICHI GIJUTSU KENKYUSH, KAWASAKI-SHI, JP;KAWAMURA, NORIKAZU, C/O NHK HOSO GIJUTSU KENKYUSHO, TOKYO, JP |
| 分类号 |
G11B11/105;H01F10/32;(IPC1-7):G11B11/10 |
主分类号 |
G11B11/105 |
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