MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING/REPRODUCING DEVICE
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United States of America Patent
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Issued Date -
May 19, 2011
app pub date -
Sep 2, 2008
filing date -
Sep 5, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a perpendicular magnetic recording medium including at least a backing layer, an orientation control layer, a magnetic recording layer and a protective layer provided on top of a non-magnetic substrate, wherein the orientation control layer is composed of two or more layers including a seed layer and an intermediate layer, formed in that order from the substrate side, and the seed layer is formed of a material containing 5 to 25 atomic % of an element for which, in a phase diagram, the solid solution region with an element having a face-centered cubic structure is not more than 1 atomic %. Also provided is a magnetic recording/reproducing device that includes the magnetic recording medium and a magnetic head for recording and reproducing information on the magnetic recording medium.
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