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. 29, 2012
Filed:
Apr. 28, 2009
Steven C. Riemer, Minneapolis, MN (US);
Ibro Tabakovic, Edina, MN (US);
Jie Gong, Eden Prairie, MN (US);
Hieu T. Lam, Milpitas, CA (US);
Mark T. Kief, Lakeville, MN (US);
Mark H. Ostrowski, Lakeville, MN (US);
Jiaoming Qiu, Minneapolis, MN (US);
Steven C. Riemer, Minneapolis, MN (US);
Ibro Tabakovic, Edina, MN (US);
Jie Gong, Eden Prairie, MN (US);
Hieu T. Lam, Milpitas, CA (US);
Mark T. Kief, Lakeville, MN (US);
Mark H. Ostrowski, Lakeville, MN (US);
Jiaoming Qiu, Minneapolis, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A patterned magnetic recording media and method thereof is provided. A recording layer comprises a continuous surface of more-noble elements and less-noble elements, such as CoXYZ, wherein X can be Pt, Pd, Ru, Rh, Ir, Os, or Au, wherein Y can be null or Cr, and wherein Z can be null, Cu, Ta, Ti, O, B, Ag, or TiO. The recording layer is masked, shielding areas for recording domains and exposing areas between the recording domains. A voltage bias establishes the substrate as an anode in the presence of Pt cathode, in an electrolyte bath. Ions of the less-noble element are anodically removed predominantly from the exposed areas of the recording layer for a controlled time. The controlled time minimizes oxidation of the nobler element and reduces undercutting of the recording domains. The article produced can have separating areas with surfaces substantially formed of the more-noble element.