Magnetic recording medium and magnetic recording and reproducing apparatus
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United States of America Patent
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Jun 7, 2016
Grant Date -
Mar 26, 2015
app pub date -
May 10, 2013
filing date -
May 14, 2012
priority date (Note) -
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Abstract
A thermally-assisted magnetic recording medium or a microwave-assisted magnetic recording medium includes: an orientation control layer (104) that is formed on a substrate (101); an underlayer (10) that is formed on the orientation control layer (104); and a magnetic layer (108) that is formed on the underlayer (10) and contains an alloy having an L10 type crystal structure as a main component, in which the underlayer (10) includes an MgO underlayer (107) that contains MgO and has a (100) orientation and a nitride underlayer (106) that contains at least one nitride selected from the group consisting of TaN, NbN, and HfN and has a (100) orientation.
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