发明申请
US20050048328A1 MAGNETIC THIN FILM MEDIA WITH A BI-LAYER STRUCTURE OF CRTI/NIP
有权
具有CRTI / NIP的双层结构的磁薄膜介质
- 专利标题: MAGNETIC THIN FILM MEDIA WITH A BI-LAYER STRUCTURE OF CRTI/NIP
- 专利标题(中): 具有CRTI / NIP的双层结构的磁薄膜介质
-
申请号: US10651634申请日: 2003-08-29
-
公开(公告)号: US20050048328A1公开(公告)日: 2005-03-03
- 发明人: Xiaoping Bian , Mary Doerner , Mohammad Mirzamaani , Adam Polcyn , Qi-Fan Xiao
- 申请人: Xiaoping Bian , Mary Doerner , Mohammad Mirzamaani , Adam Polcyn , Qi-Fan Xiao
- 主分类号: G11B5/738
- IPC分类号: G11B5/738 ; G11B5/65 ; G11B5/73 ; G11B5/85 ; G11B5/851 ; B32B3/02 ; G11B5/64
摘要:
A thin film magnetic media structure with a bi-layer structure of amorphous chromium titanium (CrTi) followed by an amorphous layer of nickel phosphorus (NiP) is disclosed. After the NiP has been deposited it is exposed to oxygen to form an oxidized surface. Preferably the underlayer is deposited directly onto the oxidized NiP surface. The bi-layer structure of CrTi/NiP promotes excellent in-plane crystallographic orientation in the cobalt alloy magnetic layer(s) and allows: an ultra-thin chromium underlayer to be used which provides better control over grain size and distribution. When the CrTi/NiP bi-layer structure is combined with a circumferentially textured substrate, preferably glass, a high Mrt orientation ratio (OR) results.