Invention Grant
- Patent Title: Perpendicular magnetic recording media
- Patent Title (中): 垂直磁记录介质
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Application No.: US11364172Application Date: 2006-03-01
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Publication No.: US07537845B2Publication Date: 2009-05-26
- Inventor: Byung-kyu Lee , Hoon-sang Oh , Kyung-jin Lee
- Applicant: Byung-kyu Lee , Hoon-sang Oh , Kyung-jin Lee
- Applicant Address: KR Suwon, Kyungki-Do
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon, Kyungki-Do
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: KR2002-57394 20020919
- Main IPC: G11B5/64
- IPC: G11B5/64

Abstract:
A perpendicular magnetic recording medium having a good thermal stability and a high recording density is provided. The perpendicular magnetic recording medium includes at least a first and a second perpendicular magnetic recording layer and a substrate supporting the first and the second perpendicular magnetic recording layers. The first and the second perpendicular magnetic recording layers have different physical/magnetic properties and are formed of materials that compensate the different physical/magnetic properties. The first and the second perpendicular magnetic recording layers are selected from a layer for improving perpendicular magnetic anisotropic energy (Ku), a layer for reducing the size of crystal grains, a layer for reducing the size of magnetic domains, a layer for increasing an SNR, a layer for improving signal output, a layer for reducing noise, a layer for improving the uniformity of crystal grain sizes, and a layer for improving the uniformity of magnetic domain sizes.
Public/Granted literature
- US20060147759A1 Perpendicular magnetic recording media Public/Granted day:2006-07-06
Information query
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