发明名称 MAGNETIC RECORDING MEDIUM AND METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM
摘要 A method for manufacturing a magnetic recording medium for perpendicular magnetic recording includes the steps of forming a first magnetic layer which has magnetic crystal grains exhibiting perpendicular magnetic anisotropy and nonmagnetic substances for magnetically separating the magnetic crystal grains from each other at grain boundaries of the magnetic crystal grains, forming a second magnetic layer which has magnetic grains exchange-coupled to the magnetic crystal grains, a grain boundary width of the magnetic grains being smaller than a grain boundary width of the magnetic crystal grains, and forming separation regions which magnetically separate tracks from each other in regions between the tracks of the magnetic recording medium in at least the second magnetic layer. The separation regions are disposed substantially only in the second magnetic layer of the first magnetic layer and the second magnetic layer.
申请公布号 US2011039125(A1) 申请公布日期 2011.02.17
申请号 US20100906414 申请日期 2010.10.18
申请人 WD MEDIA (SINGAPORE) PTE. LTD. 发明人 SONOBE YOSHIAKI;UMEZAWA TEIICHIRO;WAGO KOICHI
分类号 G11B5/66;G11B5/84 主分类号 G11B5/66
代理机构 代理人
主权项
地址
您可能感兴趣的专利