Invention Grant
- Patent Title: Perpendicular magnetic recording medium
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Application No.: US12722581Application Date: 2010-03-12
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Publication No.: US10026429B2Publication Date: 2018-07-17
- Inventor: Sok-hyun Kong , Hoo-san Lee , Sadayuki Watanabe , Shunji Takenoiri
- Applicant: Sok-hyun Kong , Hoo-san Lee , Sadayuki Watanabe , Shunji Takenoiri
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agency: Hall Estill Attorneys at Law
- Priority: KR10-2009-0021882 20090313
- Main IPC: G11B5/66
- IPC: G11B5/66

Abstract:
A perpendicular type of magnetic recording medium has a multi-layered recording structure made up of a plurality of ferro-magnetic layers and a non-magnetic layer interposed between the plurality of ferro-magnetic layers, and the perpendicular magnetic anisotropy energy of the lower ferro-magnetic layer is greater than the perpendicular magnetic anisotropy energy of the upper ferro-magnetic layer. Accordingly, the lower ferro-magnetic layer may be easily magnetically reversed by a magnetic field applied during a write operation. Thus, the perpendicular type of magnetic recording medium exhibits an enhanced thermal stability and write-ability.
Public/Granted literature
- US20100233515A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM Public/Granted day:2010-09-16
Information query
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