Invention Grant
- Patent Title: High coercivity magnetic recording medium comprising a sputter textured layer
- Patent Title (中): 包括溅射纹理层的高矫顽力磁记录介质
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Application No.: US09788530Application Date: 2001-02-21
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Publication No.: US06472049B2Publication Date: 2002-10-29
- Inventor: Xing Song , Ga-Lane Chen , Charles Leu , Qixu Chen
- Applicant: Xing Song , Ga-Lane Chen , Charles Leu , Qixu Chen
- Main IPC: G11B564
- IPC: G11B564

Abstract:
Reproducible texturing of magnetic recording media is enhanced by sputtering a buffer layer, such as Ni—P, on a nonmagnetic substrate, prior to sputtering a textured bump layer. A magnetic recording medium comprising a sputter textured metal layer and high coercivity is achieved by employing an underlayer, such as NiAl or FeAl, preferably a composite underlayer containing a chromium or chromium-alloy layer and a NiAl layer, on the sputter textured layer. Advantageously, the buffer layer, underlayer, textured bump layer, magnetic layer and carbon overcoat can be sputter deposited in a single apparatus.
Public/Granted literature
- US20010010870A1 High coercivity magnetic recording medium comprising a sputter textured layer Public/Granted day:2001-08-02
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