Method for manufacturing magnetic recording medium
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United States of America Patent
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Apr 14, 2015
Grant Date -
Mar 27, 2008
app pub date -
Sep 27, 2007
filing date -
Sep 27, 2006
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Abstract
A method for manufacturing a magnetic recording medium includes the steps of (a) forming a perpendicular magnetic recording layer and (b) applying an ion beam to regions between tracks of the perpendicular magnetic recording layer so as to form separation regions for magnetically separating the tracks from each other. In the step (a), a continuous film layer composed of a multilayer film is formed, and CoB layers and Pd layers are laminated in the multilayer film. In the step (b), the CoB layers and the Pd layers are melted by the ion beam so as to form an alloy of metals contained in the CoB layers and the Pd layers to thereby form the separation regions.
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