发明名称 |
Methods of production for corrosion-resistant bit patterned media (BPM) and discrete track media (DTM) |
摘要 |
A method for producing a magnetic recording medium in one embodiment includes forming a magnetic material layer above a substrate, transferring an uneven pattern to the magnetic material layer to form concave portions and convex portions, the convex portions being magnetic regions, depositing a nonmagnetic material above the concave portions to form nonmagnetic regions, forming an oxide layer and/or hydroxide layer above the magnetic regions of the recording layer, and forming an organic material layer which exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy above the oxide layer and/or hydroxide layer. |
申请公布号 |
US9275670(B2) |
申请公布日期 |
2016.03.01 |
申请号 |
US201414223851 |
申请日期 |
2014.03.24 |
申请人 |
HGST Netherlands B.V. |
发明人 |
Dai Qing;Marchon Bruno;Mabuchi Katsumi;Amo Mina |
分类号 |
G11B5/84;B32B9/00;G11B5/72;G11B5/855;G11B5/74 |
主分类号 |
G11B5/84 |
代理机构 |
Zilka-Kotab, PC |
代理人 |
Zilka-Kotab, PC |
主权项 |
1. A method for producing a magnetic recording medium, the method comprising:
forming a magnetic material layer above a substrate; transferring an uneven pattern to the magnetic material layer to form concave portions and convex portions, the convex portions being magnetic regions; forming a laminate layer on sidewalls of the concave portions of the magnetic material layer, the laminate layer including an organic material layer and an oxide layer and/or hydroxide layer deposited after the organic material layer thereby sandwiching the organic material layer between the magnetic material layer and the oxide layer and/or hydroxide layer; wherein the organic material layer exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy; and depositing a nonmagnetic material within the concave portions to form nonmagnetic regions. |
地址 |
Amsterdam NL |