发明申请
- 专利标题: PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PROCESS FOR MANUFACTURE THEREOF
- 专利标题(中): 全能磁记录介质及其制造方法
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申请号: US13119057申请日: 2009-09-16
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公开(公告)号: US20110212346A1公开(公告)日: 2011-09-01
- 发明人: Takahiro Onoue , Teiichiro Umezawa , Toshiaki Tachibana , Masafumi Ishiyama
- 申请人: Takahiro Onoue , Teiichiro Umezawa , Toshiaki Tachibana , Masafumi Ishiyama
- 申请人地址: US CA Lake Forest
- 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: US CA Lake Forest
- 优先权: JP2008-236270 20080916; JP2008-251502 20080929; JP2008-251503 20080929
- 国际申请: PCT/JP2009/066199 WO 20090916
- 主分类号: G11B5/66
- IPC分类号: G11B5/66 ; G11B5/84 ; B05D3/02 ; B05D3/06 ; B05D3/04 ; B05D1/36 ; C23C16/44
摘要:
An object of the present invention is to provide a perpendicular magnetic recording medium the SNR of which is improved by reducing noise thought to be due to an auxiliary recording layer so that a higher recording density can be achieved, and a method of manufacturing the same.In order to achieve the above object, a representative configuration of a perpendicular magnetic recording medium 100 according to the present invention includes, on a base, at least a magnetic recording layer 122 having a granular structure in which a non-magnetic grain boundary portion is formed between crystal particles grown in a columnar shape; a non-magnetic split layer 124 disposed on the magnetic recording layer 122 and containing Ru and oxygen; and an auxiliary recording layer 126 that is disposed on the split layer 124 and that is magnetically approximately continuous in an in-plane direction of a main surface of the base 110.
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