Invention Application
- Patent Title: 光磁気記録媒体及びその製造方法
- Patent Title (English): Magneto-optical recording medium and manufacturing method thereof
- Patent Title (中): 磁光记录介质及其制造方法
-
Application No.: PCT/JP2002/012289Application Date: 2002-11-25
-
Publication No.: WO2003046905A1Publication Date: 2003-06-05
- Inventor: 村上 元良 , 坂口 武 , 尾留川 正博
- Applicant: 松下電器産業株式会社 , 村上 元良 , 坂口 武 , 尾留川 正博
- Applicant Address: 〒571-8501 大阪府 門真市 大字門真1006番地 Osaka JP
- Assignee: 松下電器産業株式会社,村上 元良,坂口 武,尾留川 正博
- Current Assignee: 松下電器産業株式会社,村上 元良,坂口 武,尾留川 正博
- Current Assignee Address: 〒571-8501 大阪府 門真市 大字門真1006番地 Osaka JP
- Agency: 特許業務法人池内・佐藤アンドパートナーズ
- Priority: JP2001-365047 20011129
- Main IPC: G11B11/105
- IPC: G11B11/105
Abstract:
A magneto-optical recording medium including a recording film (10) having a reproduction layer (13), an intermediate layer (14), and a recording layer (15) on an optical disc substrate. The recording film (10) is a magnetic film magnetically connected and having magnetic anisotropy in the direction vertical to the film surface. A recording magnetic domain formed on the recording layer (15) is transferred onto the reproduction layer (13). Recording information is reproduced by movement of the magnetic domain wall. The recording layer (15) has a columnar structure orientated substantially in the vertical direction. Thus, it becomes possible to perform a high-speed reproduction of a signal below the diffraction limit of the light spot for recording/reproducing the information and significantly improve the recording density and the transfer speed. Even when recorded at a high density, it is possible to form a stable recording magnetic domain.
Information query
IPC分类: