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US06472049B2 High coercivity magnetic recording medium comprising a sputter textured layer 失效
包括溅射纹理层的高矫顽力磁记录介质

High coercivity magnetic recording medium comprising a sputter textured layer
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.
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