发明名称 Method of manufacturing perpendicular magnetic recording medium and perpendicular magnetic recording medium
摘要 An object of the present invention is to provide a method of manufacturing a perpendicular magnetic recording medium (100) in which both of a coercive force Hc and reliability can be achieved at a higher level even with heating at the time of forming a medium protective layer (126) and to provide the perpendicular magnetic recording medium (100). Thus, in a typical structure of the present invention, in the method of manufacturing the perpendicular magnetic recording medium (100) including at least a magnetic recording layer (122b), which is a ferromagnetic layer of a granular structure in which a non-magnetic grain boundary part is formed between crystal grains each grown in a columnar shape, and a medium protective layer (126) with carbon hydride as a main component in this order on a disk base (110), the method includes a magnetic recording layer forming step of forming the magnetic recording layer (122b) so that the grain boundary part contains oxides of a plurality of types and a medium protective layer forming step of forming the medium protective layer (126) in a state where the disk base (110) having the magnetic recording layer (122b) formed thereon is heated at 160 to 200 degrees Celsius.
申请公布号 US8623528(B2) 申请公布日期 2014.01.07
申请号 US20090934975 申请日期 2009.03.25
申请人 UMEZAWA TEIICHIRO;ISHIYAMA MASAFUMI;SATO TOKICHIRO;AYAMA KENJI;ONOUE TAKAHIRO;HORIKAWA JUNICHI;WD MEDIA (SINGAPORE) PTE. LTD. 发明人 UMEZAWA TEIICHIRO;ISHIYAMA MASAFUMI;SATO TOKICHIRO;AYAMA KENJI;ONOUE TAKAHIRO;HORIKAWA JUNICHI
分类号 G11B5/66 主分类号 G11B5/66
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