发明授权
- 专利标题: Magnetic flux barrier
- 专利标题(中): 磁通屏障
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申请号: US12879791申请日: 2010-09-10
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公开(公告)号: US08982507B2公开(公告)日: 2015-03-17
- 发明人: Eric Meloche , Bin Lu , Lixin Jia , Jianhua Xue , John David Westwood , Mark Anthony Gubbins , Alexandru Cazacy
- 申请人: Eric Meloche , Bin Lu , Lixin Jia , Jianhua Xue , John David Westwood , Mark Anthony Gubbins , Alexandru Cazacy
- 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: Westman, Champlin & Koehler, P.A.
- 主分类号: G11B5/127
- IPC分类号: G11B5/127 ; G11B5/31
摘要:
Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.
公开/授权文献
- US20120063032A1 MAGNETIC FLUX BARRIER 公开/授权日:2012-03-15