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:
Jan. 29, 2013
Filed:
Jan. 23, 2008
Seong-yong Yoon, Suwon-si, KR;
Chee-kheng Lim, Yongin-si, KR;
Hoo-san Lee, Osan-si, KR;
Hoon-sang OH, Seongnam-si, KR;
Sok-hyun Kong, Seoul, KR;
Seong-yong Yoon, Suwon-si, KR;
Chee-kheng Lim, Yongin-si, KR;
Hoo-san Lee, Osan-si, KR;
Hoon-sang Oh, Seongnam-si, KR;
Sok-hyun Kong, Seoul, KR;
Seagate Technology LLC, Cupertino, CA (US);
Abstract
A perpendicular magnetic recording medium and a method of manufacturing the same are provided. The perpendicular magnetic recording medium comprises a recording layer including a plurality of regions formed in the depth direction of the recording layer and a magnetic anisotropy constant of a region relatively deeper than another region, among the plurality of regions, is greater than that of the another region. The method of manufacturing a perpendicular magnetic recording medium includes: forming a recording layer having perpendicular magnetic anisotropy; and irradiating the recording layer with ions.