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:
Apr. 15, 2014
Filed:
Jul. 25, 2008
Zhong Stella Wu, Fremont, CA (US);
Samuel Dacke Harkness, Iv, Berkeley, CA (US);
Mariana R. Munteanu, Santa Clara, CA (US);
Qixu Chen, Milpitas, CA (US);
Connie Chunling Liu, San Jose, CA (US);
Zhong Stella Wu, Fremont, CA (US);
Samuel Dacke Harkness, IV, Berkeley, CA (US);
Mariana R. Munteanu, Santa Clara, CA (US);
Qixu Chen, Milpitas, CA (US);
Connie Chunling Liu, San Jose, CA (US);
Seagate Technology LLC, Cupertino, CA (US);
Abstract
A perpendicular magnetic recording medium having a dual-layer magnetic film is disclosed. The bottom layer is completely exchange decoupled, and the top layer contains a certain amount of exchange coupling optimized for recording performance. Preferably, the bottom magnetic layer contains stable oxide material (for example, TiO) and other non-magnetic elements (for example, Cr). A method of manufacturing the media is also disclosed.