公开(公告)号：US11735216B2

公开(公告)日：2023-08-22

申请号：US16907676

申请日：2020-06-22

Applicant: SHOWA DENKO K.K.

Inventor： Kota Hasegawa ,  Yu Azuma

IPC: G11B5/73 ,  G11B5/66 ,  G11B5/851 ,  G11B5/667

CPC classification number: G11B5/7379 ,  G11B5/667 ,  G11B5/851

Abstract: A magnetic recording medium includes a non-magnetic substrate; a soft magnetic layer; a first seed layer; a second seed layer; an underlayer; and a perpendicular magnetic recording layer. The soft magnetic layer, the first seed layer, the second seed layer, the underlayer and the perpendicular magnetic recording layer are disposed on the non-magnetic substrate in this order. The first seed layer includes MoS2, hexagonal-BN, WS2, WSe2 or graphite. The second seed layer includes AlN having a hexagonal wurtzite type crystal structure. The underlayer includes Ru.