Invention Grant
- Patent Title: Perpendicular magnetic recording medium and perpendicular magnetic recording/reproducing apparatus
- Patent Title (中): 垂直磁记录介质和垂直磁记录/再现装置
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Application No.: US11441184Application Date: 2006-05-26
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Publication No.: US07695832B2Publication Date: 2010-04-13
- Inventor: Soichi Oikawa
- Applicant: Soichi Oikawa
- Applicant Address: JP Tokyo
- Assignee: Kanushiki Kaisha Toshiba
- Current Assignee: Kanushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Pillsbury Winthrop Shaw Pittman, LLP
- Priority: JP2005-155996 20050527
- Main IPC: G11B5/66
- IPC: G11B5/66
Abstract:
In a perpendicular magnetic recording medium, a multilayered underlayer including a first metal underlayer, a second metal underlayer having no solid solution properties with respect to the first metal underlayer and having a hole, and a third metal underlayer having solid solution properties with respect to the first metal underlayer and having no solid solution properties with respect to the second metal underlayer is formed on a substrate, and a magnetic recording layer is formed on the multilayered underlayer.
Public/Granted literature
- US20060269794A1 Perpendicular magnetic recording medium and perpendicular magnetic recording/reproducing apparatus Public/Granted day:2006-11-30
Information query
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