Invention Grant
- Patent Title: Perpendicular magnetic recording media and methods for producing the same
- Patent Title (中): 垂直磁记录介质及其制造方法
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Application No.: US13166002Application Date: 2011-06-22
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Publication No.: US09472227B2Publication Date: 2016-10-18
- Inventor: Hi Shin , Iwao Okamoto
- Applicant: Hi Shin , Iwao Okamoto
- Applicant Address: US CA Irvine
- Assignee: WD Media (Singapore) Pte. Ltd.
- Current Assignee: WD Media (Singapore) Pte. Ltd.
- Current Assignee Address: US CA Irvine
- Agency: Sughrue Mion, PLLC
- Priority: JP2010-141238 20100622
- Main IPC: G11B5/73
- IPC: G11B5/73 ; G11B5/738

Abstract:
[Problem] An object is to provide a perpendicular magnetic recording medium that can realize both improvement in crystal orientation and refinement of crystal grain size and can achieve a higher recording density and a higher SN ratio, and a method of manufacturing the same.[Solution] A perpendicular magnetic recording medium 100 of the present invention is a perpendicular magnetic recording medium 100 having a base plate 100, and a laminate film including a first ground layer 150a provided on the base plate 100, a second ground layer 150b provided on the first ground layer 150a, and a main recording layer 160 provided on the second ground layer 150b and containing a magnetic material having a granular structure, wherein the magnetic material which constitutes the main recording layer 160 contains a CoCrPt alloy, and a material which constitutes the second ground layer 150b contains an Ru—Co oxide alloy.
Public/Granted literature
- US20120164488A1 PERPENDICULAR MAGNETIC RECORDING MEDIA AND METHODS FOR PRODUCING THE SAME Public/Granted day:2012-06-28
Information query
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