Invention Grant
- Patent Title: Magnetic flux barrier
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Application No.: US14615940Application Date: 2015-02-06
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Publication No.: US09171555B2Publication Date: 2015-10-27
- Inventor: Eric Meloche , Bin Lu , Lixin Jia , Jianhua Xue , John David Westwood , Mark Anthony Gubbins , Alexandru Cazacu
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agency: Westerman, Champlin & Koehler, P.A.
- Main IPC: G11B5/33
- IPC: G11B5/33 ; G11B5/11 ; G11B5/127 ; G11B5/31

Abstract:
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.
Public/Granted literature
- US20150154985A1 MAGNETIC FLUX BARRIER Public/Granted day:2015-06-04
Information query
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