The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1999
Filed:
Nov. 05, 1997
Fu-Wen Cheng, Chung-li, TW;
James Liang, Piscataway, NJ (US);
Tain-Wong Hung, Tao-yuan Hsien, TW;
Hung-huei Liang, Chang-hwa Hsien, TW;
Trace Storage Tech. Corp., Hsinchu, TW;
Abstract
A thin-film magnetic recording media is prepared which contains a carbon overcoat sputtered on a magnetic recording layer. The carbon overcoat is sputtered on the magnetic recording layer using a sputtering process which is conducted in a sputtering chamber having an inert gas and a mixture of nitrogen gas and hydrogen gas, wherein said nitrogen gas and hydrogen gas are provided at a mole ratio of nitrogen/hydrogen between about 0.5 and about 1. The hydrogen and nitrogen doped amorphous carbon overcoat exhibits excellent mechanical properties and tribological performance.