Invention Grant
- Patent Title: Perpendicular magnetic recording disk with recording layer containing selected metal oxides and formed on a reduced-thickness exchange-break layer
- Patent Title (中): 垂直磁记录盘，其记录层含有选定的金属氧化物，并形成于厚度较薄的交换层
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Application No.: US11203360Application Date: 2005-08-12
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Publication No.: US07491452B2Publication Date: 2009-02-17
- Inventor: Hoa Van Do , Bernd Heinz , Yoshihiro Ikeda , Kentaro Takano , Min Xiao
- Applicant: Hoa Van Do , Bernd Heinz , Yoshihiro Ikeda , Kentaro Takano , Min Xiao
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agent Thomas R. Berthold
- Main IPC: G11B5/66
- IPC: G11B5/66
Abstract:
A perpendicular magnetic recording disk has a granular Co-based ferromagnetic alloy recording layer (RL) with oxides of a selected metal (Ta or Nb) and a reduced-thickness exchange-break layer (EBL) between the RL and the soft magnetic underlayer (SUL). A perpendicular magnetic recording system that includes the disk, the write head and the read head, has an improved ability to write to the RL because of the reduced-thickness EBL.
Public/Granted literature
Information query
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