Invention Grant
- Patent Title: Manufacturing process for perpendicular magnetic recording medium
- Patent Title (中): 垂直磁记录介质的制造工艺
-
Application No.: US11259409Application Date: 2005-10-25
-
Publication No.: US07641774B2Publication Date: 2010-01-05
- Inventor: Yoshinori Honda , Takayuki Ichihara , Hiroyuki Nakagawa , Kiwamu Tanahashi
- Applicant: Yoshinori Honda , Takayuki Ichihara , Hiroyuki Nakagawa , Kiwamu Tanahashi
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Townsend and Townsend and Crew LLP
- Agent Darren Gold
- Priority: JP2004-314327 20041028
- Main IPC: C23C14/34
- IPC: C23C14/34

Abstract:
A perpendicular magnetic recording medium is manufactured having excellent thermal stability and recording performances across the entire disk surface. In one embodiment, the recording layer includes at least two layers deposited by using a reactive sputtering method under an oxygen-containing atmosphere at a deposition rate larger than the second recording layer which is formed on the first recording layer while depositing the first recording layer on the intermediate layer.
Public/Granted literature
- US20060090998A1 Manufacturing process for perpendicular magnetic recording medium Public/Granted day:2006-05-04
Information query
IPC分类: