发明授权
- 专利标题： Magnetic recording apparatus and magnetic head
- 专利标题（中）： 磁记录装置和磁头
-
申请号： US10206751申请日： 2002-07-26
-
公开(公告)号： US07221544B2公开(公告)日： 2007-05-22
- 发明人: Takayoshi Ohtsu , Shinji Narishige
- 申请人： Takayoshi Ohtsu , Shinji Narishige
- 申请人地址： JP Odawara
- 专利权人： Hitachi Global Storage Technologies Japan, Ltd.
- 当前专利权人： Hitachi Global Storage Technologies Japan, Ltd.
- 当前专利权人地址： JP Odawara
- 代理机构： Townsend and Townsend and Crew LLP
- 优先权： JP2001-226991 20010727
- 主分类号： G11B5/66
- IPC分类号： G11B5/66
摘要：
Formation of magnetic domains in a perpendicularly magnetized medium comprising an underlayer of a soft magnetic layer is prevented by appropriate magnetic domain control in the soft magnetic layer. One method controls magnetic domains of the soft magnetic layer by applying an external magnetic field to the medium. Another method provides a mechanism in the magnetic head for generating a magnetic field to control the magnetic domains of the soft magnetic layer of the medium.
公开/授权文献
- US20030021070A1 Magnetic recording apparatus and magnetic head 公开/授权日：2003-01-30