发明申请
- 专利标题: MAGNETIC MEDIUM HAVING AN ARTIFICIAL PATTERN STRUCTURE USING A GRADIENT OF A MAGNETIZATION REVERSAL FIELD AND A METHOD OF USE THEREOF
- 专利标题(中): 具有使用磁化反转场的梯度的人造图案结构的磁性介质及其使用方法
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申请号: US12630728申请日: 2009-12-03
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公开(公告)号: US20100142084A1公开(公告)日: 2010-06-10
- 发明人: Hiroaki Nemoto , Hiroyuki Suzuki , Masae Suzuki , Miki Hara , Yoshio Suzuki
- 申请人: Hiroaki Nemoto , Hiroyuki Suzuki , Masae Suzuki , Miki Hara , Yoshio Suzuki
- 优先权: JP2008-311524 20081204
- 主分类号: G11B5/596
- IPC分类号: G11B5/596 ; G11B5/82
摘要:
To avoid the occurrence of a recording error by suppressing the influence that a magneto-static interaction acting between the pattern dots exerts on a recording process and expand a margin for recording synchronization timing lag or tracking misregistration on the pattern dot. Each pattern dot has a structure in which a plurality of parts having different magnetization reversal fields are bonded with exchange interaction in the in-plane direction of a medium, substrate. The positional relationship between the parts having different magnetization reversal Fields is substantially coincident between the adjacent pattern dots, which are arranged to have a gradient of magnetization reversal field in a track direction or track transverse direction. Further, the recording is performed by adapting a gradient of recording magnetic field to the gradient of magnetization reversal field. Other methods and systems are described as well.