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Vertical magnetic recording medium and a magnetic memory device 发明授权

2023-12-01 2210 153K 0

专利信息

申请日期 2025-07-09 申请号 JP2001285306
公开(公告)号 JP3701593B2 公开(公告)日 2005-09-28
公开国别 JP 申请人省市代码 全国
申请人 Hitachi Global Storage Technologies503136004
简介 A perpendicular magnetic recording medium and a magnetic storage apparatus, which show an excellent S/N ratio and are suitable for ultra high density magnetic recording, are provided. In the perpendicular magnetic recording medium having a recording layer composed of at least two layers of a main recording layer formed above a substrate and a thermally-stabilizing layer formed on the main recording layer, the thermally-stabilizing layer being formed closer to a surface of the medium than the main recording layer, alloy containing Co and Cr as a main component, which shows a low noise property, is used as the main recording layer, amorphous alloy containing rare earth metals and 3d transition metals as a main component, which is excellent in thermal stability, is used as the thermally-stabilizing layer, and a cap layer formed of alloy containing Co and Cr as a main component is formed on a surface of the thermally-stabilizing layer.


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