| 发明名称 | Magnetic recording medium and magnetic storage apparatus | ||
| 摘要 | A magnetic recording medium may include an orientation control layer, a lower recording layer, an intermediate layer, and an upper recording layer that are stacked. The lower recording layer may have a coercivity higher than that of the upper recording layer, and the intermediate layer may include a layer including a magnetic material and having a saturation magnetization of 50 emu/cc or higher. The upper recording layer may include columnar crystals continuous with crystal particles forming the intermediate layer in a direction in which the layers are stacked. | ||
| 申请公布号 | US8804285(B2) | 申请公布日期 | 2014.08.12 |
| 申请号 | US201313894558 | 申请日期 | 2013.05.15 |
| 申请人 | Showa Denko K.K. | 发明人 | Takahoshi Hideaki;Amiya Daisuke;Sakai Hiroshi |
| 分类号 | G11B5/738;G11B5/65;G11B5/66 | 主分类号 | G11B5/738 |
| 代理机构 | IPUSA, PLLC | 代理人 | IPUSA, PLLC |
| 主权项 | 1. A magnetic recording medium comprising: a stacked structure including an orientation control layer, a lower recording layer, an intermediate layer, and an upper recording layer that are sequentially stacked, wherein the lower recording layer has a coercivity higher than that of the upper recording layer, wherein the intermediate layer includes a layer including a magnetic material and having a saturation magnetization of 50 emu/cc or higher, and wherein the upper recording layer includes columnar crystals continuous with crystal particles forming the intermediate layer in a direction in which the layers of the stacked structure are sequentially stacked. | ||
| 地址 | Tokyo JP | ||