发明授权
- 专利标题: Recording layer of magneto-optical storage medium having sublayer and method of fabricating the same
- 专利标题(中): 具有子层的磁光存储介质的记录层及其制造方法
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申请号: US10721636申请日: 2003-11-24
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公开(公告)号: US07153540B2公开(公告)日: 2006-12-26
- 发明人: Dong Woo Suh , Ho Jun Ryu , Yeung Joon Sohn , Yong Woo Park , Mun Cheol Paek
- 申请人: Dong Woo Suh , Ho Jun Ryu , Yeung Joon Sohn , Yong Woo Park , Mun Cheol Paek
- 申请人地址: KR
- 专利权人: Electronics and Telecommunications Research Institiute
- 当前专利权人: Electronics and Telecommunications Research Institiute
- 当前专利权人地址: KR
- 代理机构: Blakely Sokoloff Taylor & Zafman
- 优先权: KR10-2002-0080550 20021217
- 主分类号: B05D3/02
- IPC分类号: B05D3/02 ; B05D7/14
摘要:
A recording layer of a magneto-optical storage medium having a sublayer in accordance with the present invention comprises a recording layer on which information is recorded and stored; and a sublayer formed above or below the recording layer and made up of an alloy containing a transition metal, wherein a magnetic anisotropy energy of the sublayer is exchange-coupled to the recording layer, thereby enhancing a coercive force of the recording layer. The sublayer may be formed in a single-layered structure having one layer, or in a multi-layered structure having a plurality of layers. The sublayer is preferably made up of an alloy containing a transition metal used for the recording layer. According to the present invention, the coercive force of the recording layer can be increased by an exchange coupling effect between the recording layer and its adjacent sublayer, and thus, the stability of the magnetic domain in the recording layer can be improved. Therefore, the size of the magnetic domain can be significantly reduced, and the density of recording can be increased.