公开(公告)号：US20210256998A1

公开(公告)日：2021-08-19

申请号：US17141367

申请日：2021-01-05

Applicant: SHOWA DENKO K.K.

Inventor： Koichi NAGASAKA ,  Takayuki FUKUSHIMA ,  Lei ZHANG ,  Chen XU ,  Hisato SHIBATA ,  Takehiro YAMAGUCHI ,  Hiroshi KOYANAGI ,  Yuji UMEMOTO

IPC: G11B5/73 ,  G11B5/851 ,  G11B5/33

Abstract: A magnetic recording medium includes a substrate, an underlayer provided above the substrate, and a magnetic layer provided on and in contact with the underlayer. The underlayer includes a compound represented by a general formula MgO(1-x), where x falls within a range of 0.07 to 0.25. The magnetic layer includes an alloy having a L10 structure, and the alloy having the L10 structure includes one or more elements selected from a group consisting of Al, Si, Ga, and Ge.