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:
Jun. 26, 2007
Filed:
Mar. 11, 2004
Qixu Chen, Milpitas, CA (US);
Chung-hee Chang, Fremont, CA (US);
Li-lien Lee, San Jose, CA (US);
Samuel D. Harkness, Iv, Berkeley, CA (US);
Qixu Chen, Milpitas, CA (US);
Chung-Hee Chang, Fremont, CA (US);
Li-Lien Lee, San Jose, CA (US);
Samuel D. Harkness, IV, Berkeley, CA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A magnetic recording medium, the order of layers in which is the substrate, the soft underlayer, the seedlayer, the 1RuCr-containing interlayer, the 2RuCr-containing interlayer and the magnetic recording layer with preferably a oxides or nitrides-containing magnetic layer comprising grains, is disclosed. High-chromium ruthenium-chromium alloy used as inter layers significantly enhances coercivity and SMNR preferably due to the improved lattice match between RuCr inter layers and CoPt-based magnetic recording layers, and the surface energy of RuCr layers contributes to the performance improvement with the high-chromium addition into Ru inter layers.