公开(公告)号：US20140362472A1

公开(公告)日：2014-12-11

申请号：US14297879

申请日：2014-06-06

Applicant: SHOWA DENKO K.K.

Inventor： Akira SAKAWAKI ,  Akira Yamane

IPC: G11B5/66

CPC classification number: G11B5/66 ,  G11B5/1278 ,  G11B5/65 ,  G11B5/82 ,  Y10T428/115

Abstract: A perpendicular magnetic recording medium includes a nonmagnetic substrate, an underlayer provided above the nonmagnetic substrate, and a perpendicular recording layer provided above the underlayer. The perpendicular recording layer includes a first magnetic layer including Co and Pt and having a granular structure, and a second magnetic layer having magnetic and ferroelectric properties.

Abstract translation: 垂直磁记录介质包括非磁性衬底，设置在非磁性衬底上的底层和设置在底层上方的垂直记录层。 垂直记录层包括具有粒状结构的Co和Pt的第一磁性层和具有磁性和铁电性质的第二磁性层。