Invention Grant
- Patent Title: Recording disk with antiferromagnetically coupled multilayer ferromagnetic island disposed in trench between discrete tracks
- Patent Title (中): 记录盘，其设置在离散轨道之间的沟槽中的反铁磁耦合多层铁磁岛
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Application No.: US11592507Application Date: 2006-11-03
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Publication No.: US07876529B1Publication Date: 2011-01-25
- Inventor: Mourad Benakli , Michael Mallary
- Applicant: Mourad Benakli , Michael Mallary
- Applicant Address: US CA Scotts Valley
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Scotts Valley
- Agency: Hollingsworth & Funk, LLC
- Main IPC: G11B5/667
- IPC: G11B5/667 ; G11B5/82
Abstract:
An apparatus having a write head for writing data on to a recording medium comprises a recording disk medium and one or more ferromagnetic islands. The recording disk medium has a data layer in discrete tracks with trenches between the discrete tracks, and a soft underlayer beneath the data layer and the trenches. The one or more ferromagnetic islands are disposed in the trenches between the discrete tracks in the recording disk medium and over the soft underlayer. The one or more ferromagnetic islands comprise a first layer having a first magnetization direction and a second layer having a second magnetization direction that is different than the first magnetization direction.
Information query
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