Magnetic recording medium with guard layer between auxiliary and magnetic recording layers and manufacturing method of the magnetic recording medium
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United States of America Patent
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Dec 10, 2013
Grant Date -
Dec 23, 2010
app pub date -
Mar 9, 2009
filing date -
Mar 17, 2008
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Abstract
It is an object to manufacture magnetic recording media with the high recording density. Since nonmagnetic portions (8) with a predetermined pattern are formed in a recording auxiliary layer (4) formed on a magnetic recording layer (3), it is possible to actualize a magnetic recording medium where magnetic portions (7) and the magnetic recording layer (3) immediately below the portions (7) are recording units. The nonmagnetic portions (8) are formed by non-magnetization using ion implantation, and it is thereby possible to manufacture magnetic recording media with the high recording density.
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