公开(公告)号：US20100247963A1

公开(公告)日：2010-09-30

申请号：US12749147

申请日：2010-03-29

申请人： Kong KIM ,  Hi SHIN ,  Tomoko SEKI ,  Satoshi ISHII

发明人： Kong KIM ,  Hi SHIN ,  Tomoko SEKI ,  Satoshi ISHII

IPC分类号： G11B5/33

CPC分类号： G11B5/82 ,  G11B5/65 ,  G11B5/66

摘要： A perpendicular magnetic recording medium is used for information recording of a perpendicular magnetic recording type. The perpendicular magnetic recording medium includes a substrate, a soft magnetic layer, an underlayer, and a magnetic layer having a multilayered structure including a plurality of magnetic layers. The soft magnetic layer, the underlayer, and the magnetic layer are formed on the substrate. At least one of the magnetic layers includes CoPt magnetic grains containing oxide. The oxide includes at least one material selected from the group consisting of SiO2, TiO2, Cr2O3, Ta2O5, WO3, CoO, and Co3O4.

摘要翻译： 垂直磁记录介质用于垂直磁记录类型的信息记录。 垂直磁记录介质包括具有包括多个磁性层的多层结构的基板，软磁性层，底层和磁性层。 软磁性层，底层和磁性层形成在基板上。 至少一个磁性层包括含有氧化物的CoPt磁性颗粒。 氧化物包括选自SiO 2，TiO 2，Cr 2 O 3，Ta 2 O 5，WO 3，CoO和Co 3 O 4中的至少一种材料。