Seagate Technology Incorporated

Xiaohua Chen

Kuo-Hsing Hwang

Alexander Boris Khazanov

Stella Tan

Abdellah Hafid

Quy Cuu Nguyen

A magnetic disc for use in a magnetic disc drive is provided. The magnetic disc includes a recording surface wherein the recording surface includes a dual phase carbon overcoat. The dual phase carbon overcoat includes an amorphous carbon film sputtered on a magnetic layer. A doped amorphous carbon film is sputtered on the amorphous carbon film. The dual phase carbon overcoat has demonstrated improved hardness, reduced stiction and superior corrosion resistance over the prior art. A method of manufacturing the magnetic disc is also provided. The method includes providing a sputtering apparatus having a process chamber, providing a partially manufactured magnetic disc having a magnetic layer thereon, placing the partially manufactured magnetic disc within the process chamber, sputtering an amorphous carbon film on the magnetic layer, and sputtering a doped amorphous carbon film on the amorphous carbon film. The process reduces throughput inefficiencies due to down time cleaning and avoids carbon induced damage to the discs.

Growing community of inventors

Fremont, CA, United States of America

Xiaohua Chen