发明授权
- 专利标题： Magnetic recording medium having soft magnetic layer and perpendicular magnetic recording layer
- 专利标题（中）： 具有软磁层和垂直磁记录层的磁记录介质
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申请号： US11485328申请日： 2006-07-13
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公开(公告)号： US07983003B2公开(公告)日： 2011-07-19
- 发明人: Yoshiaki Sonobe , Shinichi Ishibashi , Masato Kobayashi , Teiichiro Umezawa
- 申请人： Yoshiaki Sonobe , Shinichi Ishibashi , Masato Kobayashi , Teiichiro Umezawa
- 申请人地址： SG Singapore
- 专利权人： WD Media (Singapore) PTE LTD
- 当前专利权人： WD Media (Singapore) PTE LTD
- 当前专利权人地址： SG Singapore
- 优先权： JP2005-205756 20050714
- 主分类号： G11B5/82
- IPC分类号： G11B5/82
摘要：
A perpendicular magnetic recording medium 10 adapted to be mounted in a perpendicular magnetic recording type hard disk drive and including a disk-shaped disk base 12, a soft magnetic layer 14 formed on the disk base 12, and a perpendicular magnetic recording layer 16 formed on the soft magnetic layer 14, wherein, at respective portions of the soft magnetic layer 14, directional distribution of easy magnetization axes of magnetic particles included In each of the respective portions is isotropic with respect to respective directions in the main surface of the soft magnetic layer 14.
公开/授权文献
- US20070053106A1 Perpendicular magnetic recording medium 公开/授权日：2007-03-08