Wd Media, LLC

Wei Kah Tan

Xiaofeng Yao

Ge Xu

A magnetic-recording medium includes a hydrogen and nitrogen implanted carbon overcoat (HNICOC) on a magnetic-recording layer. The HNICOC includes nitrogen implanted in a top-surface layer of the HNICOC such that a percentage ratio of a concentration of the implanted nitrogen to a concentration of carbon is between about 30 percent (%) to about 10% within a depth from about 2 &#x212b;ngstrom (&#x212b;) to about 5 &#x212b; from the top surface of the HNICOC. An amount of hydrogen implanted in the top-surface layer is between about 1% to about 12% within a distance less than about 5 &#x212b; from the top surface. A data storage device that incorporates the magnetic-recording medium within a magnetic-recording disk, and a method for making the magnetic-recording medium are also described.

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San Jose, CA, United States of America

Wei Kah Tan