发明申请
- 专利标题: MAGNETIC RECORDING DISK HAVING PRE-PATTERNED SURFACE FEATURES AND PLANARIZED SURFACE
- 专利标题(中): 具有预设表面特征和平面化表面的磁记录盘
-
申请号: US12753683申请日: 2010-04-02
-
公开(公告)号: US20110244273A1公开(公告)日: 2011-10-06
- 发明人: Charles Mathew Mate , Franck Dreyfus Rose , Kurt Allan Rubin , Steven Gary Schmid , Tushar Keshubhai Suther
- 申请人: Charles Mathew Mate , Franck Dreyfus Rose , Kurt Allan Rubin , Steven Gary Schmid , Tushar Keshubhai Suther
- 主分类号: G11B5/706
- IPC分类号: G11B5/706
摘要:
A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recording layer, and at least one of the overcoat layers functions as a stop layer for terminating a chemical-mechanical polishing (CMP) process that substantially planarizes the disk. All of the layers of the multilayered overcoat are located above the lands, but none of the overcoat layers, or a number of layers less than the number of layers over the lands, is located above the recesses.
公开/授权文献
信息查询
IPC分类: