PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH GRAIN ISOLATION LAYER
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United States of America Patent
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Issued Date -
Sep 17, 2015
app pub date -
Mar 14, 2014
filing date -
Mar 14, 2014
priority date (Note) -
Abandoned
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Abstract
A perpendicular magnetic recording medium with an grain isolation layer is disclosed. In one embodiment, a perpendicular magnetic recording medium comprising a substrate, a soft magnetic under layer formed over the substrate, a seed layer comprising an upper layer and a lower layer formed over the soft magnetic underlayer, an intermediate layer formed of Ru or an Ru alloy formed over the seed layer and a recording layer formed over the intermediate layer, forming a grain isolation layer on the upper layer of the seed layer is provided.
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