Invention Grant
- Patent Title: Discrete track magnetic media with domain wall pinning sites
- Patent Title (中): 具有畴壁钉扎位置的离散轨道磁性介质
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Application No.: US11946535Application Date: 2007-11-28
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Publication No.: US07986493B2Publication Date: 2011-07-26
- Inventor: Dieter Weller , Timothy J. Klemmer , Kim Y. Lee
- Applicant: Dieter Weller , Timothy J. Klemmer , Kim Y. Lee
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agency: Westman, Champlin & Kelly, P.A.
- Agent Alan G. Rego
- Main IPC: G11B5/82
- IPC: G11B5/82

Abstract:
A magnetic recording medium with domain wall pinning sites including a substrate, a soft magnetic underlayer, and a magnetic recording layer overlying the soft magnetic underlayer. In one embodiment the magnetic recording layer has at least two grooves providing a track having first and second sidewalls formed by the grooves. The sidewalls provide a plurality of pinning sites formed between the sidewalls for pinning magnetic domain walls in the track. At least one of the pinning sites includes a first indentation in the first sidewall and a paired second indentation in the second sidewall. In one embodiment data can be stored within the magnetic recording layer by positioning a write head adjacent the track and inducing at least two magnetic domains defining a domain wall. The domain wall migrates to one of the pinning sites in the track.
Public/Granted literature
- US20090135518A1 DISCRETE TRACK MAGNETIC MEDIA WITH DOMAIN WALL PINNING SITES Public/Granted day:2009-05-28
Information query
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