| 申请日期 | 2025-09-13 | 申请号 | JP2010228778 |
| 公开（公告）号 | JP4865078B1 | 公开（公告）日 | 2012-02-01 |
| 公开国别 | JP | 申请人省市代码 | 全国 |
| 申请人 | TOSHIBA CORPORATION3078 | ||
| 简介 | According to one embodiment, a magnetic recording medium includes a substrate, and a magnetic recording layer formed on the substrate. The magnetic recording layer includes recording portions having patterns regularly arranged in an longitudinal direction and containing cobalt and platinum, and non recording portions formed between the recording portions and containing boron and at least one light rare earth metal selected from the group consisting of yttrium, lanthanum, and cerium. | ||
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