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:
May. 20, 2003
Filed:
Sep. 06, 2001
Kueir-Weei Chour, San Jose, CA (US);
Liji Huang, San Jose, CA (US);
Jie-Ming Yu, Pleasanton, CA (US);
Kuo-Hsing Hwang, San Jose, CA (US);
Chung Shih, Cupertino, CA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A magnetic recording medium is formed with dual carbon-containing protective layers having a combined thickness of less than about 100 Å with high corrosion resistance and superior magnetic performance. Embodiments of the present invention include sputter depositing a first protective layer of hydrogenated carbon at a density of at least 1.9 while applying a DC bias of about 250V to about 400V to the substrate, and sputter depositing a second protective layer comprising nitrogen-doped hydrogenated carbon on the first protective layer.