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WD Media Assigned Patent

HAMR media structure

WD Media, Inc., San Jose, CA, has been assigned a patent (10,115,428) developed by Bertero, Gerardo A., Redwood City, CA, and Zong, Fenghua, San Jose, CA, for a “HAMR media structure having an anisotropic thermal barrier layer.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A heat assisted magnetic recording, (HAMR) media structure is disclosed. The HAMR media structure includes a magnetic recording layer comprising an array of magnetic grains for storing information, a heat sink layer disposed below the magnetic recording layer and having a first thermal conductivity, and an anisotropic thermal barrier layer disposed between the magnetic recording layer and the heat sink layer and having a vertical thermal conductivity and an in-plane thermal conductivity, wherein the vertical thermal conductivity is substantially higher than the in-plane thermal conductivity.

The patent application was filed on February 15, 2013 (13/769,232).