发明授权
- 专利标题: Write fringing reduction for recording media
- 专利标题(中): 为记录媒体写出边缘缩小
-
申请号: US12967927申请日: 2010-12-14
-
公开(公告)号: US08243389B2公开(公告)日: 2012-08-14
- 发明人: Mourad Benakli , Michael Mallary
- 申请人: Mourad Benakli , Michael Mallary
- 申请人地址: US CA Cupertino
- 专利权人: Seagate Technology LLC
- 当前专利权人: Seagate Technology LLC
- 当前专利权人地址: US CA Cupertino
- 代理机构: Hollingsworth Davis, LLC
- 主分类号: G11B5/667
- IPC分类号: G11B5/667 ; G11B5/82
摘要:
A recording media design having discrete track recording structure where the trenches between tracks are filled with a soft magnetic material is provided. The soft magnetic material provides a low magnetic impedance path to the soft underlayer such that fringe fields from the write head are conducted to the soft underlayer without having a negative effect such as adjacent track erasure. A method of manufacturing the media includes a nano-imprint step and ion milling out the data layer to create the trenches. A B2O3 material allows the data layer to be ion milled out without redeposition bridging the B2O3 layer thus preventing lift off of the mask. The trenches are then filled by ion deposition with the layers of ferromagnetic material separated by an anti-ferromagnetic coupling that causes the flux to be conducted to the soft underlayer and remnant flux to rotate within the island and not into adjacent tracks.
公开/授权文献
- US20110085267A1 Media Design for High TPI for Write Fringing Reduction 公开/授权日:2011-04-14
信息查询
IPC分类: