Invention Grant
- Patent Title: High areal density magnetic recording medium with dual magnetic layers
- Patent Title (中): 具有双磁层的高密度磁记录介质
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Application No.: US614848Application Date: 1996-03-11
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Publication No.: US5763071APublication Date: 1998-06-09
- Inventor: Ga-Lane Chen , Qixu Chen
- Applicant: Ga-Lane Chen , Qixu Chen
- Applicant Address: CA Scotts Valley
- Assignee: Seagate Technology, Inc.
- Current Assignee: Seagate Technology, Inc.
- Current Assignee Address: CA Scotts Valley
- Main IPC: G11B5/64
- IPC: G11B5/64 ; G11B5/65 ; G11B5/66 ; G11B5/673 ; G11B5/738
Abstract:
A magnetic recording medium having a high areal recording density of about 3 to about 20 Gb/in.sup.2, an Mrt of about 0.30 to about 0.60 memu/cm.sup.2, a coercivity greater than 2,500 Oersteds and a coercivity squareness of about 0.70 to about 0.95 is obtained by depositing one or more pairs of magnetic layers comprising a magnetically isotropic layer directly on a magnetically anisotropic layer. Chromium intermediate layers are employed to separate each pair of magnetically isotropic/anisotropic layers. In one embodiment, the magnetically anisotropic layer comprises a cobalt-base alloy containing chromium and tantalum and the magnetically isotropic layer comprises a cobalt-base layer containing chromium, platinum and tantalum.
Public/Granted literature
- US5158337A Seats for children Public/Granted day:1992-10-27
Information query
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