Perpendicular magnetic recording medium and perpendicular magnetic recording/reproducing apparatus
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United States of America Patent
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Apr 13, 2010
Grant Date -
Nov 30, 2006
app pub date -
May 26, 2006
filing date -
May 27, 2005
priority date (Note) -
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Abstract
In a perpendicular magnetic recording medium, a multilayered underlayer including a first metal underlayer, a second metal underlayer having no solid solution properties with respect to the first metal underlayer and having a hole, and a third metal underlayer having solid solution properties with respect to the first metal underlayer and having no solid solution properties with respect to the second metal underlayer is formed on a substrate, and a magnetic recording layer is formed on the multilayered underlayer.
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